Tuesday, 22 September 2020

John Jeremiah Bigsby, M.D.(1792-1881) – Geologist, Physician, Entomologist, Author and Artist

 “Among the pioneers in Canadian Geology, no observer was more
accurate than Dr. J. J. Bigsby, secretary to the Boundary Commissioners
under the Treaty of Ghent. His range of investigation extended
from Quebec to Lake Superior, and beyond the limits of the province in
that direction; and he has accumulated and published a great store of
facts, upon the exactness of which the greatest reliance can be placed.
He is in consequence frequently quoted in this volume as an authority.”
            Sir William Logan, 1863, Geology of Canada, page x

Sir William Logan is generally considered to have been Canada’s greatest geologist.  Elkanah Billings is considered to have been Canada’s greatest paleontologist.  Logan established the Geological Survey of Canada and served as its director from 1842-1870.   Billings was appointed the first Paleontologist to the Geological Survey of Canada in 1856 and served in that position until he died in 1876.   Before Logan and before Billings, John Jeremiah Bigsby was considered the person most knowledgeable on the subjects of geology and paleontology in Upper and Lower Canada.

John Jeremiah Bigsby was the son of Dr. John Bigsby of Nottingham, England, and as he followed in his father’s profession, the son was almost invariably referred to in his lifetime by his full name, or as Dr. John J. Bigsby or as Dr. J. J. Bigsby.  

In previous postings (from 2012, 2013, 2014 and 2015) I have mentioned four medical doctors who contributed to the early understanding of geology of Ontario and Quebec:  Dr. James Wilson (1798-1881)  who practiced as a physician in Perth, Canada West  from 1821 to 1869, and provided the first specimens of Perthite and Peristerite, and the trace fossil that Logan named Climactichnites Wilsoni;  Dr. Andrew Fernando Holmes (1797 -1860), who practiced medicine in Montreal,  whose geological collections formed the nucleus of McGill’s collection and who was instrumental in founding a medical institute in Montreal that later became McGill’s faculty of medicine;   Dr. Edward Van Cortlandt, (1805-1875) who arrived in Bytown in 1832 as the medical officer for the troops, before setting up in private practice (while continuing his association with the military); and Dr. Robert Abraham (1804-1854), who as owner and publisher of the Montreal Gazette was the first to report on the tracks from Beauharnois that Logan and Owen named Protichnites.

Like Dr. James Wilson, Dr. Robert Abraham and Dr. Holmes, John Jeremiah Bigsby took his degree of Doctor of Medicine at Edinburgh University. It is also worth  mentioning that William Edmond Logan registered in 1816 as a medical student at Edinburgh University, but did not complete hia degree.  Dr. John Jeremiah Bigsby  graduated with a  Doctor of Medicine from Edinburgh in 1814.  His doctoral thesis was entitled Disputatio medica inauguralis quaedam de vi arsenici exitiosa complectens.   Various sources suggest that he initially practiced as a surgeon at the Royal Infirmary of Edinburgh.  Two years later he published a paper entitled “On the Effects of Arsenic as they appear in the Human Body After Death” which appeared in The London Medical Repository, Volume 5, No. 6, February 1, 1816 pages 97-104, which occurred while he was at York Hospital, Chelsea.

On March 14, 1816 Dr. J. J Bigsby  joined the British Army as an Assistant Surgeon,  was initially stationed at  the Isle of Wight and then posted to the Cape.  In 1817 Bigsby was sent to British North America as an assistant staff surgeon stationed at Quebec City, Lower Canada.

There are three important  further stages to John Jeremiah Bigsby’s professional career:

- from 1818 to 1826 he served as a physician with the British military in Upper and Lower Canada, but devoted most of his time and energy to geology;   

- from about 1827 to 1846 he practiced medicine at Newark in Nottinghamshire, England and wrote articles devoted principally to medicine; and   

- in 1846 he moved to London with his second wife where he devoted himself to writing– principally on geology– until he died in 1881.

Below I will expand on each of those periods and highlight some of his accomplishments.

It is worth noting that before Bigsby little knowledge was available on the geology of Upper or Lower Canada.   In, 1752 Guettard had published a geologic map of North America which shows the locations of over twenty occurrences of  iron ore, copper, marble, talc, emery, etc. in what are now Ontario and Quebec.  Reed, Wheeler and Tucholke (2005) set out what is covered by the map.   Little else had been reported.  The British defeated the French on the  Plains of Abraham in 1759 and in 1763  the Treaty of Paris awarded  New France to Great Britain.   The Province of Upper Canada  was a part of British Canada established in 1791   The locations of numerous ore deposits  were known and exploited by the British settlers.  (For example, the first iron smelter in Upper Canada was established in 1802 in Furnace Falls, now known as Lyndhurst, smelting iron ore from near Delta, Ontario.)  Rock was also quarried from numerous locations.  However, little  was known about the geology.     


1817 to 1826


In 1817 Bigsby went to Canada as Medical Officer to a detachment of a German Rifle Regiment in the British Service.  In 1819, while stationed at Quebec City, he was commissioned to travel through Upper Canada and make a report on its geology. As a result of those activities he undertook journeys to Lake Huron in 1820 and the north shore of the St. Lawrence in 1821 and Niagara Falls in 1822.   In 1822 he was appointed British Secretary and Medical Officer to the Boundary Commission established under the Treaty of Ghent (the peace treaty that ended the War of 1812 between the United States and the United Kingdom) to set the boundary between the United States and the Upper Canada.    In 1823 he helped explore and map the region between Fort William on Lake Superior and Lake of the Woods.

Barlow (1907) in a report geology of the District of Nipissing, Ontario and of the County of Pontiac, Quebec mentions: 

“The first geological account of the region in question was that of Dr. J. J. Bigsby, who had come to Canada as medical officer to a regiment. About the year 1820 he received an appointment from the Colonial Government to make a general report on the geology of Upper Canada, the absurdly small sum of twenty-six pounds, as he informs us, being granted as pecuniary aid to carry out this extensive undertaking. Dr. Bigsby first made an examination of the Ottawa, Mattawa and French rivers, together with Lake Nipissing, having been granted a free passage to Sault Ste. Marie in one of the Northwest Company's canoes. He gives a good account of the Ottawa river itself and of the country adjoining this stream, and mentions that the Mattawa river, which was the western branch of the Ottawa, often called the Little Ottawa, was known as the Tessouac river by the Indians. The occurrence of crystalline limestones at the Talon chute is noticed, among other interesting facts. The position of 'La Ronde,' a Northwest Company's post, is noted as being situated at the mouth of the Vase river, as well as its subsequent removal to one of the islands in Lake Nipissing.” 

In the period from 1820 to 1826 John Jeremiah Bigsby  published about 10 papers devoted to the geology and geography of North America.  His first paper, entitled, “Remarks on the Environs of Carthage Bridge, near the mouth of the Genesee River” appeared in Silliman’s American Journal in the year 1820.    Here is a list of some of his accomplishments.   For Canada he was:


- first to report on the geology and geography of Lake Huron region
- first to report on the geology and geography of Lake Superior region
- first to report on the geology and geography of Lake Ontario region, including the first to report on the Oak Ridge Moraine north of Toronto
- first to report on the geology and geography of the St. Lawrence valley
- first to report on the geology  of the Island of Montreal and other parts of Quebec
- first to report on many mineral locations in Canada
- first to find the mineral Petalite (lithium aluminum silicate) in North America
- in 1824 the first to report that the basal sandstone beneath the limestone extends from near Kingston, Upper Canada to St. Anne’s, 25 miles northwest of Montreal
- In 1820 the first to collect a new species of Trilobite from North America,  Asaphus platycephalus (now Isotelus  platycephalus (Stokes)),  the first trilobite from what is now Ontario to receive a name, and in 1824 the first trilobite from North America to be described (it was described  by Stokes in an appendix to Bigsby’s paper on Lake Huron)
- in 1825 described a new species of trilobite, Arctinurus castelnau (Bigsby),  from shales at Lockport, New York–  the second  report of a new species of trilobite from New York State – which became the type of Arctinurus
- first to report on many other new species of  fossils, including the following cephalopods:
Actinoceras backi, Stokes 1840  [Othocerae, Bigsby 1824]
Actinoceras Bigsbyi, Bronn 1837 [Othocerae, Bigsby 1824]
Actinoceras whitei, Stokes 1840 [Othocerae, Bigsby 1824]
Discosorus remotus, Bigsby 1824
Discosorus conoideus, Hall 1851 [Columns compose of circular discs, Bigsby, 1824]
Endoceras Rottermundi, Barrande 1866 [Orthoceras, sp., Bigsby 1824]
[see https://books.google.ca/books?id=Z08YAAAAYAAJ
https://www.biodiversitylibrary.org/item/196423#page/5/mode/1up
Catalogue of Fossil Cephalopoda in the British Museum, Part 1 ]

- the first to collect numerous other  new species of fossils, which he was generous enough to give to others to describe, including Caryocrinites ornatus (Say) 1824; Caryocrinites loricatus  (Say) 1824;  Hurona vertebrallis, Stokes 1824, Huronia turbinata, Stokes 1824; Huronia obliqua, Stokes 1824;

In 1823  Bigsby was elected a Fellow of the Geological  Society and in 1824 an honorary member of the American Geological Society.

Entomologist


 While serving as British Secretary and Medical Officer to the Boundary Commission Bigsby collected 1,200 specimens of insects, including 90 new species and two new genera.   Bigsby commented on his collection of insects as follows:

 “I employed my leisure in the examination of the geology of the country, and in the collection of insects. I met with ninety new species of insects and two new genera.  They have been described, and some of them figured, by the Rev. W. Kirby, F.R.S., in the “Fauna Boreali-America” of Sir John Richardson. A list of them will be found in the Appendix.  It was remarkable, that when I had to all appearance exhausted any given locality, the insect  population of the next station, ten or fifteen miles distant, consisted one half of new species, and so on from place to place,—and this, perhaps, from a difference in the vegetation and in the season of the year.  Compassion—deep and irresistible—has made me forswear the occupation of the entomologist, whose very mercies are the cruelties of other men, whether he kill by scalding water or the red-hot iron wire.  I glued to a tray, in a dark charnel-house of 1200 dead insects, a large and beautiful butterfly,  of a sky-blue colour, supposed to be dead. There it was during six months of travel. When I examined my treasures at Quebec, on my return, this imprisoned Peri slowly raised and gently shook its wings to greet  the returning light. Was not this a torture to be shuddered at?"

( See: Shoe and the Canoe, Volume 2 pages 166-7 and Appendix.)

In 1823  he was elected Fellow the Linnean Society of London, the world’s oldest active biological society. 


In 1825 he was elected a member of the American Philosophical Society

1826 to 1846


By the summer of 1826  Dr. J.J. Bigsby had returned to England, where he married Miss Sarah Jamson in July, 1826 at Burton Joyce, Nottinghamshire.  From late 1826 to 1846 Dr. J.J. Bigsby practiced as a medical doctor in Newark-on-Trent, Nottinghamshire.  During parts of that time he also served as a magistrate, alderman and mayor of Newark-on-Trent.   

From 1827 to 1829 he read two papers before the Geological Society of London on the geology of Canada, and published four geological papers:

Bigsby, J.J. 1827, On the Fixed rocks of the Valley of the St. Lawrence, in North America; Philosophical Magazine New Series, Volume 2, 217-220;  read May 18 and June 1, 1827 before Geological Society.

Bigsby, J. J. 1828, On the geology of Quebec and its vicinity, Philosophical Magazine, New Series, Volume 3, 132-133;  read December 5, 1827 before Geological Society.

Bigsby, J. J. 1829, A sketch of the Topography and Geology of Lake Ontario; Philosophical Magazine, New Series, Volume 5, 1-15, 81-87, 263-274, 339-347, 424-431, with map;

From 1832 to 1841 he found time to publish a number of medical or socially conscious/activist articles, including:
    
Bigsby, J.J. (1832), A brief exposition of those benevolent institutions, often denominated self-supporting dispensaries:  with a view to recommend them to the patronage and support of the public, as tending to raise the moral character and improve the condition of the laboring classes. Printed by S. and C. Ridge, 67 pages https://archive.org/details/b22300892

Bigsby, J.J. (1835), Diseases of the Spleen, in the Cyclopedia of Practical Medicine, volume 4, Supplement, pages 55-61, edited by John Forbes, Alexander Tweedy and John Conolly

Bigsby, J.J. (1835),  Observations, pathological and Therapeutic, on the diseases of the Pancreas; Edinburgh Medical and Surgical Journal, 44: 85-102

Bigsby, J.J.  (1836),  Suggestions toward the Improvement of the Dispensary at Newark; Founded on an estimate of the Remedial Wants of the Town and Neighbourhood, 29 pages, and two tables containing Tabular Views of the Management and Results of 30 English Dispensaries,  Printed by S. And C. Ridge
                            
Bigsby, J.J. (1836), A lecture on Mendicity: its ancient and modern history, and the policy of nations and individuals in regard to it; as delivered before the Worksop Mechanics' Institute, on the 14th of April, 1836, 44 pages

Bigsby, J.J. (1839), Use of Oil in Painter’s Colic, London Medical Gazette, New Series, volume 1, 229-230; Summarized as: On the use of Oil in Colica Pictonum. By J. J. Bigsby, British and Foreign Medical Review, 1839, Volume VII, page 284

Bigsby, J.J. (1839), Small Pox and Vaccination in Newark, London Medical Gazette, Sept. 29, 1839, Vol. XXV, p. 18-26

Bigsby, J.J. (1839), On the Medical Relief of the Poor, London Medical Gazette, June 1, 1839, New Series, Vol. II, p. 383-388

Bigsby, J.J., (1841) The Seaside Manual for Invalids and Bathers: or a brief description of the effects of seaair and sunbathing on the human frame, in health and disease. London. Whittaker and Co., 119 pages

As recently as 2002, John Howard and Walter Hess state that Bigsby’s “comprehensive paper” on the pancreas “is a classic in the early clinical history of the pancreas.    That paper also includes the first report of pancreatic cancer.

Bigsby’s report on small pox is also a classic.  There was a epidemic of small pox in Newark-on-Trent in 1839.  Dr. J.J. Bigsby undertook to examine all of those in his area and looked at over 1,000 people.

1846 to 1881


In 1846 Dr. John Jeremiah Bigsby and his second wife, Caroline,  moved to London and he devoted himself to geology.  In the period 1851 to 1878 he published ten papers and books on geology, the most noteworthy of which were:

Bigsby, J.J., 1868, Thesaurus siluricus: the flora and fauna of the Silurian period, 214 pages

Bigsby, J.J., 1878,  Thesaurus devonica-carboniferus, 447 pp

Thesaurus siluricus was published with aid of a grant from the funds of the Royal Society.  It is a list of described Silurian Fossils, and was published in Dr. J.J. Bigsby’s 76th year.   Thesauraus devonica-carboniferus was published in  Dr. J.J. Bigsby’s 85th year.   He was hard at work on a Permian Thesaurus when he died.

Charles Doolittle Walcott (1881) in Correlation Papers Cambrian mentions that “An excellent summary of the Potsdam sandstone was given by Dr. J.J. Bigsby in 1858 in a paper on the Paleozoic Basin of the state of New York.”  

Further, in an article published in 1864  he was one of the first to promote what we now call stromatolites as evidence of life in the Precambrian.      He reported that he had found on the North shore of the St. Lawrence, at the base of Cape Tourment, 36-40 miles below Quebec City, in close-grained quartzose gneiss,  “circular, cup-like, organic (?) body, two or three inches in diameter, with much the look, as well as the size, of a Maclurea[a large gastropod], not, however, with gyrations, but with concentric rings, one within another; the summits are rounded and not sharp-ridged; no radiating striae nor reticulations were observed in it, but they may exist. ... It is probably organic...”     http://www.biodiversitylibrary.org/item/97056#page/238/mode/1up

In 1869 Dr. J.J. Bigsby was elected a fellow of the Geological Society of London and received the Murchison Medal from the Geological Society.   In 1869 he was elected a fellow of the Royal Society, with the notation that he was “distinguished as a geologist and paleontologist.”

In 1881 he served as president to the Geological Society

Bigsby as Writer, Artist  and Historical Commentator: The Shoe and Canoe


The most quoted of Dr. John Jeremiah Bigsby’s works is a book that he wrote to record his travels in Upper and Lower Canada:

Bigsby, J.J.  1850,  The shoe and canoe, or, Pictures of travel in the Canadas : illustrative of their scenery and of colonial life : with facts and opinions on emigration, state policy,  and other points of public interest, Two volumes, London : Chapman and Hall, 1850, 698 p.: illustrated, with maps.

It is quoted as source of customs in Upper and Lower Canada in the early 1800's.   It is also quoted in books written on the Boundary Commission.  It contains the only known description of David Thomson, map maker and astronomer.

The Shoe and Canoe contains 18 engraved plates, a number of which  were prepared from Dr. J.J. Bigsby’s sketches made in the Canadas.     Library and Archives Canada has acquired a number of collections of Bigsby’s works including two grangerized volumes of Bigsby’s The Shoe and Canoe, which are believed to be the author’s copy, including sketches by  Bigsby that were not published.    Library and Archives Canada has an interesting take on Dr. Bigsby’s activities, noting that “he developed an interest in geology, and undertook a number of sketching and geological excursions in Lower and Upper Canada.”    The sketches contain some excellent examples of fur trade posts and native settlements.

Here are Bigsby’s drawings of ‘The Black Falls on Lake Superior’, which was the Frontispiece of Volume 2 of the Shoe and the Canoe, and ‘The Rat Portage, Lake of the Woods’.





Awards


Above I  mentioned that Dr. John Jeremiah Bigsby was a Fellow of the Royal Geographical Society, a Fellow of the Geological Society of London, a Fellow the Linnean Society of London and a Fellow of the Royal Society.   He was also honoured by having the following islands and lakes named after him:
- Bigsby Island in Georgian Bay in Lake Huron
- Bigsby Island in Lake of the Woods
- Bigsby Inlet  in the Queen Charlotte Islands
- Bigsby Lake in Cook County, Minnesota

In addition numerous fossils have been named after him, including:

Actinoceras bigsbyi, Bronn 1837
Agelecrinus bigsbyi,  Schmidt 1874
Ampelita (Helix) bigsbyi, Tryon 1870
Anomocare bigsbyi Walcott
Edriocystis bigsbyi Haeckel
Edrioaster bigsbyi, Hall 1858
Edriocaster bigsbyi
Edriophus bigsbyi
Edriocystis bigsbyi, Haeckel
Graptolithus bigsbyi, Hall, 1865
Huronia bigsbyi, Stokes 1824
Leiopteria bigsbyi, Hall 1884
Liopteria bigsbyi, Hall, Clarke and Swartz, 1913
Lichas (Conolichus) bigsbyi, Hall
Maclurites bigsbyi, Hall, 1861
Oriostoma bigsyi, Walcott
Stromatocerium bigsbyi, Webby 2008
Tetragraptus bigsbyi, Hall, 1858

Bigsby Medal


The Bigsby Medal is awarded biennially by the Geological Society of London, and is one of the most prestigious awards of that society.  It was founded and funded in 1876 by John Jeremiah Bigsby, “and is to be awarded ‘as an acknowledgement of eminent services in any department of Geology, irrespective of the receiver’s country’. The recipient of the medal must have done no more than 25 years’ full-time equivalent research, ‘thus probably not too old for further work, and not too young to have done much’.”   [See https://www.geolsoc.org.uk/About/Awards-Grants-and-Bursaries/Society-Awards/Bigsby-Medal  ]

The Obverse side of the medal is a Portrait of the head of  John Jeremiah Bigsby.  The Reverse is  a representation of a fossil echinoderm Agelacrinites Dicksoni  from the Trenton Limestone (Ordovician), that was found in 1822 by John Jeremiah Bigsby at the Chaudière Falls, Ottawa River, Canada close to what was then Hull, Lower Canada.   (Bytown was founded in 1826.)

Friendly, Kindly, Courteous, Venerable, Generous


One thing that I was struck by in my research was number of kind things that were said about. Dr. John Jeremiah Bigsby.   Here is a sampling of comments:

In the anniversary address of the President of the Geological Society of London, reporting Dr. Bigsby’s death, Robert Etheridge commented that Dr. Bigsby “one of the oldest of our Fellows, and a man endeared to all who knew him by many amiable qualities, died...”

The obituary notice published by the Royal Society contained the following paragraph:
“Dr. Bigsby’s scientific attainments were not more remarkable than his many estimable qualities in private life.  For many years–indeed to the end of his life–he was noted for his unostentatious charity, and for the unceasing interest he took in the education of the poor children in the immediate neighbourhood.  His well-stored mind and his geniality rendered him a most agreeable companion, and endeared him to a large circle of attached friends.”

His obituary notice in Nature mentions “Yet another of the links that have bound geologists of the present time in association with the early leaders of their science has been severed by the removal of the kind and venerable form of Dr. Bigsby.”

Horace Woodward (1908), who served for four years as Assistant in the Library of the Museum of the Geological Society of London, commented in his book entitled “The History of the Geological Society of London”:

“During later years [Dr. Bigsby] devoted himself to the catalogues of Paleozoic fossils...  While engaged in those tasks, between the years 1862 and 1868, no one borrowed more books from the Library of the Society, and no Fellow showed greater kindness of heart and consideration for subordinates.  To the Library assistant it was indeed a pleasure to work at all times, even after official hours, for a man who commanded not only respect but affection.”

Dr. John Jeremiah Bigsby was also generous with his knowledge and the specimens that he collected.   While serving with the Boundary Commission Dr. Bigsby came into contact the Major Stephen Long’s 1823 expedition to find the source of the St. Peter’s River (now known as the Minnesota River).    William Keating (1824), a Professor of Mineralogy and Chemistry in the University of Pennsyvania, Geologist and Historiographer to the Expedition, mentions that Dr. Bigsby “kindly communicated several [localities of minerals] to us, and in mentioning them we shall always state to whom we are indebted for this.  With this acknowledgment we beg leave to offer to that gentleman our thanks for the liberal access he afforded us to his valuable collections, as well as for the information he freely and kindly imparted.”  

Bigsby also contributed to Silliman’s (1824) book ‘Remarks made on a short tour between Hartford and Quebec’, providing details of the succession of strata at the Falls at Montmorenci that Silliman included in his book.

Others also reported on specimens that Dr. J. J. Bigsby shared.  For example,  Gerard Troost (1824) reported on  the mineral Petalite provided by Dr. J. J. Bigsby ;  Gerard Troost (1825) reported on a number of minerals provided by Dr. J. J. Bigsby, including the first occurrence of apophyllite in North America, a new form of Laumonite and an enigmatic crystalline form of amphibole; while Thomas Say (1824) thanked Bigsby for donating crinoid specimens.

Before Sir William Logan and before Elkanah Billings, the person considered most knowledgeable on the subjects of geology and paleontology in the two Canadas was John Jeremiah Bigsby, M.D.   While Bigsby was eclipsed by Logan and Billings, his early work laid the foundation for those that followed.

Christopher Brett
Ottawa

References and Suggested Reading


Anonymous, 1827
Localities of Canadian Minerals, with Notes and Extracts, Chiefly collected from the Writings of John Bigsby, M.D., F.L.S., M..G.S..  The Literary and Historical Society of Quebec. 73 pages
https://books.google.ca/books?id=rNdhAAAAcAAJ

Barlow, Alfred Ernest, 1907
Second Edition of a Report on the Geology and Natural Resources of the area included by the Nipissing and Timjskaming Map-Sheets Comprising portions of the District of Nipissing, Ontario and of the County of Pontiac, Quebec. Geological Survey of Canada, Separate Report no. 962, 319 pages   https://doi.org/10.4095/225770


Bigsby, John J., 1820
Remarks on the environs of Carthage Bridge, near the mouth of the Genesee River;  The American journal of science and arts. Volume 2, 250-254
https://www.biodiversitylibrary.org/item/51607#page/262/mode/1up

Bigsby, John J., 1821
Geological and Mineralogical Observations on the North West Portion of Lake Huron. The American journal of science and arts. Volume 3, 254 -272
https://www.biodiversitylibrary.org/item/97120#page/270/mode/1up

Bigsby, John J., 1822
Notes on the Geography and Geology of Lake Huron. Transactions of the Geological Society.
ser.2 v.1 , 175-209, including Appendix I - On a Trilobite from Lake Huron. By  Charles Stokes; Appendix II -. List of some of the Recent Shells of Lake Huron; and. Appendix III  - Account of an Explosion in a Vein of Pyrites.
https://www.biodiversitylibrary.org/item/111775#page/273/mode/1up

Bigsby, John J., 1822
 Outline of the Mineralogy , Geology, &c. of Malbay, in Lower Canada, The American journal of science and arts. Volume 5, 205-222
https://www.biodiversitylibrary.org/item/97162#page/229/mode/1up

Bigsby, John J., 1824
A list of mineral and organic remains occurring in the Canadas. Am. Jour. Sci., vol. 8, 1824, pp. 60-88.  https://www.biodiversitylibrary.org/item/97257#page/72/mode/1up

Bigsby, John J., 1824
A Sketch of the Geology of the Island of Montreal, By J. J. Bigsby, M. D., Read Dec. 13, 1824.
Annals of the Lyceum Natural History of  New-York., volume1, 198-215
https://www.biodiversitylibrary.org/item/54048#page/7/mode/1up

Bigsby, John J., 1825
Notice of a Cave containing Bones, in Lanark. Upper Canada. The American journal of science and arts. Volume 9, 354-355
https://www.biodiversitylibrary.org/item/97107#page/378/mode/1up

Bigsby, John J., 1825
Description of a new Species of Trilobite.  Journal of the Academy of Natural Sciences of Philadelphia. Vol 4. 365-368
https://www.biodiversitylibrary.org/item/79352#page/379/mode/1up

Bigsby, John J., 1825
On the utility and design of the science of geology, and the best method of acquiring a knowledge of it; with geological sketches of Canada,” Canadian Review and Literary and Historical Journal (Montreal), 1 (1824–25): 377–95. Reprinted in Anonymous, 1827, Localities of Canadian Minerals, with Notes and Extracts, Chiefly collected from the Writings of John Bigsby     https://books.google.ca/books?id=rNdhAAAAcAAJ
 
Bigsby, John J., 1826
Notes on the geography and geology of Lake Superior; The Quarterly Journal, vol.  18: 1-34, 228-289
https://babel.hathitrust.org/cgi/pt?id=hvd.hs1fsf&view=image&seq=1

Bigsby, John J., 1827
On the fixed rocks of the valley of the St. Lawrence in North America (abstract).  The Philosophical Magazine.  New Series, 2: 217-220; https://www.biodiversitylibrary.org/item/53109#page/241/mode/1up
Geological Society of London, Proceedings 1, 23-25
https://www.biodiversitylibrary.org/item/105792#page/31/mode/1up

Bigsby, John J., 1828
On the geology of Quebec and its vicinity (abstract of talk), Geological Society of London, Proceedings. Volume 1:37-38
https://www.biodiversitylibrary.org/item/105792#page/45/mode/1up

Bigsby, John J., 1828
A General Description of Lake Erie, Quarterly Journal of Science, Literature and the Arts. 358-382; 1828 (July -December)
https://www.biodiversitylibrary.org/item/19863#page/374/mode/1up

Bigsby, John J., 1829
A sketch of the topography and geology of Lake Ontario. The Philosophical Magazine. New Series, vol. 5, 1-15, 81-87, 263-274, 339-347, 424-431, map
https://www.biodiversitylibrary.org/item/53111#page/15/mode/1up

Bigsby, John J., 1829
Topography of the River Niagara. Quarterly Journal of Science 27: 39-56 1829 (January to June)
https://books.google.ca/books?id=rpMwAQAAMAAJ&printsec=frontcover&dq=1829+quarterly+journal+of+Science+volume+27&hl=en&sa=X&ved=2ahUKEwiWssCHyfvrAhWCdN8KHS_pAecQ6AEwAHoECAQQAg#v=onepage&q&f=false

Bigsby, John J., 1850
The shoe and canoe : or, Pictures of travel in the Canadas,
Volume 1. London: Chapman and Hall. 352 pages
https://archive.org/details/shoecanoeorpictu01bigsuoft
Volume 2. London: Chapman and Hall. 346 pages
https://archive.org/details/cihm_28072/page/n5/mode/1up

map at: https://archive.org/details/dli.granth.40911/page/354/mode/2up


Bigsby, John J., 1851
On the Erratics of Canada.  Quarterly Journal Geological Society of London, vol. vii, pp. 215–238. https://www.biodiversitylibrary.org/item/108768#page/351/mode/1up

Bigsby, John J., 1852
On the Geology of the Lake of the Woods, South Hudson's  Bay.   Quarterly Journal Geological Society of London, vol. viii, pp. 400-406.
https://www.biodiversitylibrary.org/item/109911#page/574/mode/1up

Bigsby, John J. 1852
On the physical geography, geology, and commercial resources of Lake Superior. R. Inst., Pr. 1: 154-162; Edinburgh New Philosophical Journal 53:55-82
https://www.biodiversitylibrary.org/item/131100#page/71/mode/1up

Bigsby, John J. 1853
On the Geology of Quebec and its environs.   Quarterly Journal Geological Society of London, vol. ix, pp. 82–101, with map and 4 engravings. 
https://www.biodiversitylibrary.org/item/108767#page/202/mode/1up

Bigsby, John J. 1854
On the geology of Rainy Lake, south Hudson Bay. Geol Society of London, Q. J. 10:215-22

 Bigsby, John J., 1858.
On the Palæozoic Basin of the State of New York. Part i. The Stratigraphy and Classification of the Series. Quart. Journ. Geol. Soc.  Lond., vol. xiv,   pp. 241, 305, 306, and 335–427.
 https://www.biodiversitylibrary.org/item/111684#page/578/mode/1up

Bigsby, John J., 1858
 On the Palæozoic Basin of the State of New York. Part ii.Classification of the Palæozoic strata of the State of New York   Quart. Journ. Geol. Soc.  Lond., vol xiv, pp 427-452
https://www.biodiversitylibrary.org/item/111684#page/679/mode/1up

 Bigsby, John J., 1858
On the Palæozoic Basin of the State of New York. Part iii.  An Inquiry into the Sedimentary and other External Relations of the Palceozoic Fossils of the State of New York. Quart. Journ. Geol. Soc.  Lond., vol xv, pp 251- 333  https://www.biodiversitylibrary.org/item/111474#page/328/mode/1up

Bigsby, John J., 1864 
On the Cambrian and Huronian formations;  Quart. Journ. Geol. Soc.  Lond., vol 19, pp 36-52

 Bigsby, John J., 1863 
On the Organic Contents of the Older Metamorphic Rocks : a Review and a Classification.  
The Edinburgh New Philosophical Journal, new series,  vol 17, 171-197.
https://books.google.ca/books?id=Gk8EAAAAYAAJ

Bigsby, John J., 1864
On the Laurentian Formation: its mineral constitution, its geographical distribution, and its residuary elements of life.  Geological Magazine, Dec. 1, vol. i, pp. 154-158, 200–206..

 J. J. Bigsby, 1867
A Brief Account of the 'Thesaurus Siluricus,' with a Few Facts and Inferences.
Proceedings of the Royal Society of London, Vol. 15 (1866 - 1867), pp. 372-385
https://www.biodiversitylibrary.org/item/138616#page/420/mode/1up

Bigsby, John J., 1868
Thesaurus Siluricus:  the flora and fauna of the Silurian period, with addenda (from recent acquisitions). London : J. Van Voorst, 1868, 214 pages
https://www.biodiversitylibrary.org/item/73263#page/9/mode/1up

Bigsby, John J., 1878
Thesaurus Devonico-Carboniferus:  The flora and fauna of the Devonian and Carboniferous periods.  London : John Van Voorst, 1878, 447 pages
https

Brett, Christopher P., 2012
New Display of Dr. James Wilson’s Mineral And Fossil Collection at the Perth Museum. Blog posting October 9, 2012
http://fossilslanark.blogspot.com/2012/10/new-display-of-dr-james-wilsons-mineral_9.html

Brett, Christopher P., 2013a
Perthite from Burgess Ward, Tay Valley Township, Lanark County, Ontario.  Blog posting dated January 14, 2013  http://fossilslanark.blogspot.com/2013/01/perthite-from-burgess-ward-tay-valley.html

Brett, Christopher P., 2013b
Abraham, Logan and Owen: The Discovery of the First Protichnites trackways – Part 1; Blog posting dated August 29, 2013.  http://fossilslanark.blogspot.com/2013/08/abraham-logan-and-owen-discovery-of.html

Brett, Christopher P., 2014
Peristerite and its Connection With Lanark County, Blog posting dated 28 April 2014
http://fossilslanark.blogspot.com/2014/04/

Brett, Christopher P., 2015
Dr. Edward Van Cortlandt, M.D., (1805-1875) of Bytown and Ottawa, Surgeon, Field Naturalist, Museum Curator and Amateur Geologist.  Blog Posting dated Tuesday, 17 March 2015
http://fossilslanark.blogspot.com/2015/03/dr-edward-van-cortlandt-md-1805-1875-of.html

Etheridge, Robert, 1881
 “Obituary Notice: John Jeremiah Bigsby,”, in Anniversary Address of the President. Geological Soc. of London, Quarterly Journal, 37 (1881), [pt.ii]: 39–41 in 37-235 https://www.biodiversitylibrary.org/item/150452#page/893/mode/1up

Guettard, J.É., 1752,
Carte Minéralogique où l’on voit la Nature des Terrains du Canada et de la Lousianne, in Mémoire dans lequel on compare la Canada à la Suisse par rapport à ses mineraux: Histoire de l’Académie Royale des sciences, v. 4, p. 189, plate VII.
Map at: http://www.corpusetampois.com/cse-18-guettard1752carteducanada.jpg

Howard, John M., and Hess, Walter, 2002
History of the Pancreas: Mysteries of a Hidden Organ. Springer.

Keating, William H.,  1825
Narrative of an expedition to the source of St. Peter's River, Lake Winnepeek, Lake of the Woods, [etc.] : performed in the year 1823, by order of the Hon. J.C. Calhoun, Secretary of War, under the command of Stephen H. Long, Volume II.  London: Geo. B. Whittaker.
https://archive.org/details/narrativeofexped00keat_1

Leggett, R. F., 197?
The Bigsby Medal.   Geoscience Canada, Volume 2, Number 1, 64-65
https://journals.lib.unb.ca/index.php/gc/article/view/2901/3418

Morgan, Henry James, 1867
Bibliotheca Canadensis: Or, A Manual of Canadian Literature.   Ottawa: G. E. Desbarats
[Bigsby at page 31; Billings at page 31-35; Logan at 228 -232; Robert Abraham 4-5; Andrew Fernando Holmes at 193]

Rasporich, Anthony W., 2003
“Bigsby, John Jeremiah,” in Dictionary of Canadian Biography, vol. 11, University of Toronto/Université Laval, 2003–, accessed September 21, 2020, http://www.biographi.ca/en/bio/bigsby_john_jeremiah_11E.html.

Reed, John C. Jr.;  Wheeler, John O.; and  Brian E. Tucholke;.2005
Decade of North American Geology Geologic Map of North America—Perspectives and explanation.  The Geological Society of America. 28 pages
https://ngmdb.usgs.gov/gmna/meta_and_manu/gmna_explan_pamphlet.pdf

Say, Thomas, 1825
On two genera and several species of Crinoidea.  By Thomas Say. Read March 1st, 1825
Journal Academy of Sciences, Philadelphia, vol. i p. 289-296
https://www.biodiversitylibrary.org/item/79352#page/303/mode/1up

Silliman, Benjamin, 1824, second Edition
Remarks made on a short tour between Hartford and Quebec. New-Haven: S. Converse
https://babel.hathitrust.org/cgi/pt?id=hvd.hn7zv8&view=image&seq=19

Troost, Gerard, 1824
Description of the American Petalite from Lake Ontario. By G. Troost, M. D. Read January 13th, 1824.    Journal Academy of Sciences, Philadelphia, vol. 3. p. 234-237
https://www.biodiversitylibrary.org/item/79390#page/252/mode/1up

Troost, Gerard, 1825
Description of a new crystalline form of Apophyllite, Laumonite, and Amphibole, and of a
variety of Pearlstoxe. .By Gerard Troost,  Read May 17, 1825.  Journal Academy of Sciences, Philadelphia, vol. 5. p. 51-56
https://www.biodiversitylibrary.org/item/79357#page/61/mode/1up

Wilson, Leonard G., 2013
John Jeremiah Bigsby, MD: British Army physician and pioneer North American geologist.
book chapter in A History of Geology and Medicine. Edited by: C. J. Duffin. Geological Society London Special Publications 375(1):375-394   [ Not Read ]
https://doi.org/10.1144/SP375.20





Monday, 14 September 2020

A Plucked, Glacially Polished, Flat Outcrop of March (Theresa) Formation Rock East of Perth

 [Rewritten and Corrected  October 19, 2021.  I originally visited this outcrop in September, 2020.  I visited the outcrop again on October 18, 2021.   A more thorough examination of the outcrop has convinced me that the plucked texture records deformed stromatolites and biofilms.]

Below are photographs of a flat, glacially polished, flat outcrop exhibiting a plucked, curved texture.  The outcrop is about four kilometers due east of Perth, Ontario.  The rock has been mapped by Wilson and  Dugas (1961) of the Geological Survey of Canada (Map 1089A) and by Williams and Wolf (1984) of the Ontario Geological Survey (Map P2724) as the March Formation interbedded quartz sandstone, sandy dolostone and dolomite.   The March Formation of Ontario is equivalent to the Theresa Formation of Quebec and New York.   

The top surface of the outcrop is badly weathered sandstone.  The plucked texture is about a half inch (1 1/2 centimeters)  deep.  The ruler in the photographs is a meter stick (recording cm and inches).  The underlying beds, which can be observed about 50 meters to the north of the flat outcrop, are comprised of at least ten meters of sandstone and sandy dolostone–undoubtedly the March (Theresa) formation.

 


 

In my September, 2020 posting I suggested three possible origins for the plucked texture:

- trace fossils formed by deposit feeders;

-the trace fossil  Furchenstein, which Othenio Abel (1935) had figured in his text ‘Vorzeitliche Lebensspuren’

- deformed stromatolites or biofilms much like outcrops in Nepean sandstone in Kanata.

My recent (October, 2021) examination of the outcrop has convinced me that the plucked texture records deformed stromatolites and biofilms.  I will include further photographs of the outcrop in a posting in October, 2021.

 The closest looking named trace fossils I could find were Ophiomorpha irregulaire,  Megagrapton submontanum, and Megagrapton submontanum (See López Cabrer  &  Oliver, 2015, figures 3b, 4a, 5, 6 and 2c;  Mourad et al., 2020, figures 4E, 4F; and  Uchman , 1998, figures 104, 105), but none were bang on. 9.

Here is Othenio Abel’s drawing of Furchenstein.

‘Furchenstein’ translates into English as ‘grooved stone’ or ‘furrowed stone.’  Abel noted that his drawing was about 1/8 natural size. When enlarged eight times the grooves  would be about the same size as I observed.   Abel’s  specimen was collected from the alpine lake near Mondsee in the Austrian Alps.   In the text of ‘Vorzeitliche Lebensspuren’ Othenio Abel comments (p. 371-372)  that the ‘Furchenstein’ shown in Figure 309 is typical of flysch sandstones of the Austrian Alpine lake district.    He explains the texture by strong algae growth which decomposes the surface of the sandstone and by insects and other animals eating feeding channels in the sandstone. The current view of Furchenstein  is that the furrows result from Cyanobacteria eating into the rock, which may be assisted by some species of boring mushrooms, and that grazing animals such as snails or some larvae may further hollow out the furrows (see Müller-Stoll, 1986, Whitton  and Mateo, 2012, and German Wikipedia under ‘Furchenstein’).  
        

Trace Fossils Observed in Loose Slabs to the North of the Plucked Outcrop

Below of two photographs of a loose slab of underlying March Formation rock (a sandstone to sandy dolomite) exhibiting a more convincing trace fossil (simple, mostly straight or almost straight, some slightly curved, flattened cylindrical, subhorizontal, about 2 to 5 mm in width, 2 to 3 cm in length, unbranched, some overlapping, in places a chaotic mess; likely made by a deposit feeder; somewhat like Planolites beverlyensis [see figure 14 G in Erickson and Bjerstedt, 1993]   or the burrowing pattern of the trace fossils Arthrophycus linearis or minimus but lacking features of those traces). 



The numbers on the rulers in the above two photographs record inches on top and centimeters below.

Below is a photograph of another loose slab from the same location, exhibiting circular structures, that is perhaps a bed sole exhibiting the trace fossil Bergaueria,  or perhaps a bed top exhibiting the trace fossil Monocraterion. 


 

Christopher Brett
Ottawa

References and Suggested Reading

Abel, Othenio, 1935,
Vorzeitliche Lebensspuren.  Jena: Gustav Fischer, 644 pages

Anonymous, 2020 

Furchenstein, German Wikipedia  https://de.wikipedia.org/wiki/Furchenstein

Bjerstedt, T. W., and J. M. Erickson, 1989
Trace fossils and bioturbation in peritidal facies of the Potsdam-Theresa Formations (Cambrian–Ordovician, northwest Adirondacks): Palaios, v. 4, p. 203–224, doi:10.2307/3514770.     https://www.jstor.org/stable/3514770

Brett, Christopher, 2015
In 1924 a report of Stromatolites in Nepean Sandstone by Dr. Morley E. Wilson of the Geological Survey of Canada, and Other Reports of Stromatolites and Biofilms in the Potsdam,
Blog posting dated November 4, 2015
http://fossilslanark.blogspot.com/2015/11/in-1924-report-of-stromatolites-in.html

Erickson,  J.  Mark, 1993 
 Cambro-ordovician stratigraphy, sedimentation, and ichnobiology of the St. Lawrence  lowlands  - frontenac arch to the Champlain Valley  of New York, Field trip A3 
https://ottohmuller.com/nysga2ge/Files/1993/NYSGA 1993 A3 (1) - CAMBRO-ORDOVICIAN STRATIGRAPHY, SEDIMENTATION, AND ICHNOBIOLOGY OF THE ST. LAWRENCE LOWLANDS - FRONTENAC ARCH TO THE CHAMPLAIN VALLEY OF NEW YORK.pdf

Erickson,  J. M. and Bjerstedt, T. W.,   1993
Trace Fossils and Stratigraphy in the Potsdam and Theresa Formations of the St. Lawrence Lowland, New York.     In  Field Trip Guidebook (pp.A3 1-21)Edition: 65th Annual Meeting Chapter: A3Publisher: New York State Geological Association 
https://www.researchgate.net/publication/306145931_Trace_Fossils_and_Stratigraphy_in_the_Potsdam_and_Theresa_Formations_of_the_St_Lawrence_Lowland_New_York

López Cabrer, María I. & Eduardo B. Oliver, 2015
Ophiomorpha irregulaire and associated trace fossils from the Upper Cretaceous of Patagonia, Argentina: Palaeogeographical and ethological signifi cance. Spanish Journal of Palaeontology
29 (1), 33-44.

Mourad, Belaid ; Cherif Amine , Olev Vinn, Mohammed Nadir Naimi, 2020
First record of trace fossils from the Oxfordian Argiles rouges de Kheneg Formation (Tiaret, northwestern Algeria).   Geologia Croatica 73(2):85-94

Müller-Stoll,  Wolfgang R. , 1986
Der Cyanophyceen-Bewuchs der Furchenoder Hirnsteine des Bodensees. [The cyanophycean growth on the furrows or brain stones of Lake Constance]  Carolinea  44:51–60
https://www.zobodat.at/pdf/Carolinea_44_0051-0060.pdf

Selleck, Bruce Warren, 1985
Paleoenvironments and Petrography of the Potsdam Sandstone, Theresa Formation and Ogdensburg Dolomite (u. Camb.-l. Ord.) of the Southwestern St. Lawrence Valley, New York
https://www.nysga-online.net/wp-content/uploads/2019/06/NYSGA-1978-A6-Paleoenvironments-of-the-Potsdam-Sandstone-and-Theresa-Formation-of-the-Southwestern-St.-Lawrence-Lowlands.pdf

Stigall, Alycia L., 2020
Chondrites, in  Atlas of Ordovician Life - Exploring the fauna of the Cincinnati region,
http://www.ordovicianatlas.org/atlas/ichnofossils/chondrites/

Uchman, A. (1998): Taxonomy and ethology of flysch trace fossils: revision of the
Marian Ksi.zkiewicz collection and studies of complementary material.. Ann Soc
Geol Polon, 68,105.218.

Whitton, Brian A. and Pilar Mateo, 2012
Rivulariaceae .  Chapter 22 (pp.561-591 ) in book: B.A. Whitton (ed.), Ecology of Cyanobacteria II: Their Diversity in Space and Time.   Springer Science+Business Media B.V. , 760 pages   DOI: 10.13140/2.1.2976.3361


Wilson, Morley E. and  Dugas, Jean,  1961,
Map 1089A, Geology, Perth, Lanark and Leeds Counties, Ontario, Geological Survey of Canada; Geology by Morley E. Wilson, 1930 and Jean Dugas, 1949; Descriptive notes by Jean Dugas.
https://doi.org/10.4095/107951

Williams, D.A., 1991
Paleozoic Geology of the Ottawa-St. Lawrence Lowland, Southern Ontario; Ontario Geological Survey, Open File Report 5770, 292 pages; March Formation at 48-57.
http://www.geologyontario.mndmf.gov.on.ca/mndmaccess/mndm_dir.asp?type=pub&id=OFR5770

Williams, D. A. And Wolf, R.R., 1984
Paleozoic Geology of the Perth Area, Southern Ontario; Ontario Geological Survey, Map P. 2724, Geological Series– Preliminary Map. Scale 1:50,000.  Geology 1982
http://www.geologyontario.mndmf.gov.on.ca/mndmfiles/pub/data/imaging/P2724/P2724.pdf

Sunday, 6 September 2020

Found in Ordovician Oxford Formation Rocks of Eastern Ontario

 This week I made two stops to look at the Oxford Formation outcrops on Iveson Drive, Ottawa (including the stop mentioned in my last blog posting) and picked up a number of loose specimens.

Below are photographs of a specimen showing three linked stromatolites.  The stromatolites are much smaller than the ones pictured in my last blog posting.  The specimen was found among the pieces of rubble in a  ditch beside Iveson Drive about ten meters west of the outcrop on the south side of Iveson Drive.  The silver ruler is 6 inches (15.2 cm) long.


Below is a photograph of a specimen showing soft sediment deformation, likely a precursor to a ball-and-pillow structure.  (The numbers on the ruler are in centimeters.)


 

Below is a photograph of a specimen of oolitic packstone. (The  numbers on the ruler record centimeters.)


Below are two photographs of various specimens containing trace fossils, most of which appear to be bedding parallel burrows or resting traces.



Below is a photograph  of a slab bearing a linear trace with dimples adjacent the linear trace, which is arguably the trace fossil Protichnites Owen, 1852.


 

For the  photo the top numbers record inches, while the upside down number record centimeters.

Mud cracks were also noted on a few specimens, and syneresis  cracks (also known as subaqueous shrinkage cracks) on others.


Christopher Brett
Ottawa



Friday, 4 September 2020

Stromatolites in the Ordovician Oxford Formation, Eastern Ontario

 For the past few years Catherine Béland Otis of the Ontario Geological Survey has been mapping the Paleozoic rocks of Eastern Ontario.   A paper by Catherine Béland Otis (2018) summarized her 2018 field work in the Ottawa area and included a photograph of “Stromatolites in the Oxford (Beauharnois) Formation (UTM 459832E 5013215N; southeast corner of the Ottawa map area).”

On September 2, 2020 I visited the outcrop and the took the photographs that follow.





 The stromatolites are the concave down circular structures and are most often laterally linked to adjacent stromatolites.  The ruler in the photographs is a meter stick. The stromatolites are in rock that is dolomite.  When fresh the dolomite is a dark grey. It  weathers buff to light grey.  Lower down in the sequence are thin dolomite beds with shaley parting layers.  The shaley layers are black.  I found a few bedding parallel trace fossils in the shaley layers.   Below is a photograph of the thin layers. To the right of the 33 cm mark on the ruler are some rounded structures that are arguably ball-and-pillow structures representing soft sediment deformation.


 The Oxford (Beauharnois) Formation outcrops at this location on both sides of Iveson Drive at the second intersection with Loney Crescent (assuming you take the entrance to Iveson off 8th Line Road).  Numerous stromatolite domes can be seen in outcrops on both sides of Iveson Drive.  Plugging 45.271285,-75.512069 into Google will show the location.  

Stromatolites have been reported in the Oxford formation of Ontario by numerous authors. They were reported by Logan (1852, 1863) who called them concretions and by Morley Wilson (1924) and Alice Wilson (1945) who both called them Cryptozoon.   Bernstein  (1992) includes a  photograph (figure 9.f) of an outcrop with the caption “Geologist stands on exhumed, large domal stromatolites similar to those described by Logan (1852, 1863) ...).”   Morley Wilson (1924, Plates VII, VIII) and Alice Wilson (1945, plate II B) both included photographs of the stromatolites in the Oxford formation in Ontario.  Morley Wilson’s photographs were of outcrops near Arnprior, while Alice Wilson’s photograph was taken of an outcrop in Osgoode Township, Ontario

When the Ontario Geological Survey mapped the Paleozoic rocks of Eastern Ontario in the early 1980's (e.g., Wolf, Williams, Rae (1984) Map P. 2724 -Ottawa Area) it mapped the Potsdam Group rocks as the Covey Hill Formation and the Nepean Formation.   It mapped the overlying Beekmantown age rocks as two formations, following Alice E. Wilson (1938a, b; 1946), by placing the lower  interbedded quartz sandstone, sandy dolostone and dolostone in the March Formation and the upper dolostone in the  Oxford Formation.   What the OGS called the March Formation is known in Quebec and in New York State as the Theresa formation, and many are calling on Ontario to adopt the name Theresa formation as that term was in use before Alice E. Wilson named the March Formation.  Further, prior to Wilson naming the Oxford Formation, geologists in Quebec had been using the terms Beauharnois formation and Carillon Formation for similar rocks.  In some recent publications the term Oxford Formation has been replaced with (the lower)  Beauharnois formation and (the upper) Carillon Formation when describing Ontario rocks.   See Bernstein (1992) and Salad-Hersi, Lavoie and Nowlan (2003) for a detailed description of the naming issue.   Béland Otis (2018)’s Figure 22.2 is a diagram comparing the nomenclature  in use by the OGS since the early 1980's with the nomenclature proposed in recent publications.

Bernstein’s (1992) Figure 2, entitled “Generalized lithostratigraphy of the Beekmantown Group in the St. Lawrence Lowlands, Quebec and Ontario” shows the location of domal and columnar stromatolites in the  Beauharnois formation and  Carillon Formation.  Williams (1991) noted that “stromatolites and algal lamination are common” in the Oxford Formation in Eastern Ontario and reports stromatolites in three of his measured sections of Oxford Formation rocks (Highway 401 roadcut; Prescott; Highway 16 roadcut, Groveton; roadcut, Harwood Plains, Kanata).   Donaldson and  Chiarenzelli’s (2004b) Field Trip Guide has a stop at Fitzroy Provincial Park, Ontario to look at the stromatolites in the Oxford formation, and include a photograph of the laterally linked stromatolites in the Ottawa River at Fitzroy Provincial Park.  They also included a stop at Almonte, Ontario to look at the stromatolites in the Oxford formation ( likely Carillon Formation, see Dix and Al Rodhan, 2006, outcrop location No. 7) in the Mississippi River.     Keddy (2010 )  mentions the stromatolites in the Mississippi River at the bridge in Appleton, where the rocks are likely in the  Carillon Formation (see Dix and Al Rodhan, 2006, outcrop location No. 8).   Salad-Hersi, Lavoie, and Nowlan (2003) include a photograph of  “Stromatolites of laterally  linked  hemispheroids  (LLH-type)  evolving  into  vertically  stacking  hemispheroids  (SH-type)” in the Ogdensburg Member, Beauharnois Formation in Quebec.     

Stromatolites between one and three metres in diameter in the March Formation can also be seen in the bed of the Jock River at Franktown Road, adjacent the Riverbend Golf Course (Billings, 1975). The riverbed at this location is a Provincially Significant Earth Science ANSI protected site  (Muncaster, 2009) because of the stromatolites.   [On September 11th I drove to where the Franktown Road crosses the Jock River.  Even though the river level was quite low the stromatolites were not visible as the river bed was covered in green and brown slime.  There is a flat outcrop adjacent to the river but it is private land.]

The stromatolites at both Almonte and Appleton are often underwater and not visible (and have been when I’ve tried to look at them).   The ones in the Ottawa River at  Fitzroy Provincial Park are often visible, but are dangerous to look at if the river is high.
 
Recently Nehza and Dix (2012) described the stromatolites of the Carillon Formation and in the younger Pamelia Formation, but their article is not open access.

Husinec and  Donaldson (2014) feature a photograph (figure 15) of stromatolites in the Theresa formation of New York State.   They mention that in Upper New York the “Theresa Formation is unconformably overlain by the  Ogdensburg dolomite. ... . The Ogdensburg Dolomite is best preserved in local quarries, where it commonly contains stromatolites (Kerans, 1977; Selleck, 1984; Van Diver, 1976) formed in upper intertidal to supratidal setting (Kerans, 1977).”    

Christopher Brett
Ottawa


REFERENCE AND SUGGESTED READING

Bernstien, L, 1992,  
A revised lithostratigraphy of the Lower-Middle Ordovician Beekmantown Group, St. Lawrence Lowlands, Quebec and Ontario, Canadian Journal of Earth Sciences 29, 2677-2694 (1992)
https://doi.org/10.1139/e92-212


Brett, Christopher P., 2016
When Stromatolites Were called Concretions, Devil’s Pots, Snow-shoe Tracks and Cannon Balls.  Blog posting Thursday, 17 March 2016
 http://fossilslanark.blogspot.com/2016/03/when-stromatolites-were-called.html

Dix, G.R., and Molgat, Marianne P.,1998
Character of the Middle Ordovician Sauk–Tippecanoe sequence boundary in the Ottawa Embayment (eastern Ontario): possible evidence for platform-interior, Taconic tectonism. Canadian Journal of Earth Sciences, 35 (6): 603–619.  
https://doi.org/10.1139/e98-017

Dix G.R., and Al Rodhan Z. 2006.
A new geological framework for the Middle Ordovician Carillon Formation (uppermost Beekmantown Group, Ottawa Embayment): onset of Taconic foreland deposition and tectonism within the Laurentian platform interior. Canadian Journal of Earth Sciences 43(9): 1367-1387
https://www.nrcresearchpress.com/doi/abs/10.1139/e06-030#.X0wHfrj6iE8

Donaldson, J. A., and Chiarenzelli, J. R., 2004a,
Stromatolites and associated biogenic structures in Cambrian and Ordovician strata in and near Ottawa, Ontario: New York State Geological Association, 76th Annual Meeting, Fieldtrip Guidebook, SUNY, Potsdam, New York, Trip F-1,  p. 1–20.
https://ottohmuller.com/nysga2ge/Files/2004/NYSGA%202004%20F1%20-%20Stromatolites%20And%20Associated%20Biogenic%20Structures%20In%20Cambrian%20And%20Ordovician%20Strata%20In%20And%20Near%20Ottawa,%20Ontario.pdf

Donaldson, J. Allan and Chiarenzelli, Jeffrey R., 2004b,
Precambrian Basement and Cambrian-Ordovician Strata , as Displayed in Three Provincial Parks of Canada, 76th Annual Meeting, Field Trip Guidebook, New York State Geological Association, 283 pages, at pages 63-78.
https://www.nysga-online.net/wp-content/uploads/2019/06/NYSGA-2004-A1-Precambrian-Basement-And-Cambrian-Ordovician-Strata-As-Displayed-In-Three-Provincial-Parks-Of-Canada.pdf

Globensky, Yvon, 1982
Région de Lachute, Rapport Géologique 200, Quebec, Ministère de l'énergie et des Ressources
http://gq.mines.gouv.qc.ca/documents/examine/RG200/RG200.pdf

Husinec, Antun  and J Allan Donaldson, 2014
Lower Paleozoic Sedimentary Succession of the St. Lawrence River Valley, New York and Ontario, in : Geology of the Northwestern Adirondacks and St. Lawrence River Valley (pp.1-28)  86th NEGSA Annual Meeting Field Guidebook, Chapter: A-1. Publisher: New York State Geological Association
https://www.researchgate.net/publication/327513499_Lower_Paleozoic_Sedimentary_Succession_of_the_St_Lawrence_River_Valley_New_York_and_Ontario

Keddy, Cathy, 2010
Triple S Geotur 2010 [An account of a MVFN field trip led by Dr. Allan Donaldson.  The stromatolites at the bridge in Appleton were under water.] https://mvfn.ca/triple-s-geotur-2010/
https://mvfn.ca/wordpress/wp-content/uploads/2010/07/Triple-S-Geotour-2010.pdf

Logan, W. E., 1852,
Geological Survey of Canada, Report of Progress for the Year 1851-52, at page 19.  

Logan, W. E., 1863,
Geology of Canada, Geological Survey of Canada, Report of Progress from its Commencement to 1863, 983 pages,  at pages 112-113

Muncaster Environmental Planning Inc., 2009    (Herein, Muncaster, 2009)
Environmental impact statement and tree conservation report. Proposed residential development and golf course relocation.  Part of lots 7 and 8, Concession iv Geographic Township of Goulbourn, City of Ottawa, Riverbend Golf Course
http://webcast.ottawa.ca/plan/All_Image%20Referencing_Subdivision_Image%20Reference_Environmental_Impact_Statement_and_Tree_Conservation_Report_D07-16-09-0025.PDF

Nehza, Odette and George R. Dix, 2012
Stratigraphic restriction of stromatolites in a Middle and Upper Ordovician foreland-platform succession (Ottawa Embayment, eastern Ontario).  
Canadian Journal of Earth Sciences, 2012, 49(10): 1177-1199, https://doi.org/10.1139/e2012-048

Otis, C. Béland  2018
Paleozoic Geology of Eastern Ontario: Ottawa Area,   Project SO-18-006, pages 22-1 to 22-10, in  Ontario Geological Survey Summary of Field Work and Other Activities, 2018 (OFR 6350) http://www.geologyontario.mndm.gov.on.ca/mndmaccess/mndm_dir.asp?type=pub&id=ofr6350

Salad-Hersi, O; Lavoie, D; Nowlan, G S 2003
Reappraisal of the Beekmantown Group sedimentology and stratigraphy, Montréal area, southwestern Quebec: Implications for understanding the depositional evolution of the Lower-Middle Ordovician Laurentian passive margin of eastern Canada. Canadian Journal of Earth Sciences 40, 2, 2003 p. 149-176,  https://doi.org/10.1139/e02-077
https://www.nrcresearchpress.com/doi/pdf/10.1139/e02-077

Williams, D.A., 1991
Paleozoic Geology of the Ottawa-St. Lawrence Lowland, Southern Ontario; Ontario Geological Survey, Open File Report 5770, 292p.
http://www.geologyontario.mndmf.gov.on.ca/mndmaccess/mndm_dir.asp?type=pub&id=OFR5770

Wilson, Alice E., 1938a
Ottawa Sheet, (East Half) , Carleton and Hull Counties, Ontario and Quebec, Geological Survey of Canada,  Map 413A, Scale 1 inch to 1 mile, Geology by A. E. Wilson, 1935
https://doi.org/10.4095/107511

Wilson, Alice E., 1938b
Ottawa Sheet, (West  Half) , Carleton and Hull Counties, Ontario and Quebec, Geological Survey of Canada, Map 414A,  Scale 1 inch to 1 mile, Geology by A. E. Wilson, 1935
https://doi.org/10.4095/107545

Wilson, Alice E., 1946,
Geology of the Ottawa-St. Lawrence Lowland, Ontario and Quebec, Geological Survey of Canada, Memoir 241, 66 pages.  Plate II B, page 45. Photo No. 81893, Lot 15, Con. viii, Osgoode Township, Ontario
https://doi.org/10.4095/101632 (Open Access)

Wilson, Morley E., 1924,
Arnprior-Quyon and Maniwaki Areas, Ontario and Quebec, Geological Survey of Canada,
Plates VII, VIII,  Memoir 136, 163 pages.
https://doi.org/10.4095/100837 (Open Access)

Wolf, R.R., Williams, D.A., Rae, A.M., 1984
Paleozoic Geology of the Ottawa Area, Southern Ontario. Ontario Geological Survey
Map P2716 Geological Series - Preliminary Map.  Scale 1:50,000 Geology 1982 

http://www.geologyontario.mndmf.gov.on.ca/mndmfiles/pub/data/imaging/P2716//P2716.pdf
 

 


 

Thursday, 27 August 2020

Dave Forsyth’s Photographs of Aspidella from the Richmond Quarry, Lanark County

 I have previously mentioned Dave Forsyth in four of my earlier postings (November 29, 2013; January 29, 2014; August 27, 2015; September 22, 2016).  Dave is a retired geophysicist who has been interested in the rocks of eastern Ontario at least since 1968 when he authored a Bachelor’s thesis with the title “Studies in the Potsdam”.   Dave spent his career with the Earth Physics Branch and the Geological Survey of Canada, Department of Energy, Mines and Resources, Ottawa .   Since his retirement Dave has co-authored at least three geological field trip guides on the rocks of eastern Ontario, and has been active leading geological field trips for the Macnamara Field Naturalists’ Club, Arnprior, the Niagara Peninsula Geological Society and The Grenville Land Stewardship Council.  

Last year I mentioned in numerous blog postings (Brett, 2019a-f) that I had found the Ediacaran fossil Aspidella and Ediacaran rocks at Tackaberry’s active quarry on Highway 7 about five kilometers (three miles)  north of Perth, Lanark County, Ontario.   Last year I sent the information to Dave and he replied that a number of years ago he had seen similar structures at an abandoned quarry close to Tackaberry’s active quarry, had photographed them, and would look through his collection of photographs for photos that he had taken at that time.   This year Dave sent to me photographs from his 2008 visit to the Richmond quarry, which is located about one and a half kilometers to the west of Tackaberry’s active quarry.  Below are three of the photos that Dave sent to me.




Dave Forsyth retains ownership of the copyright in the photos.  They cannot be reproduced without his consent and credit being given to him as the photographer and owner of copyright in the photos.

I believe that the concentric features that Dave photographed are the Ediacaran fossil Aspidella.    The third photo also shows many obscure markings, a few of  which I have marked with  neon pink boxes around the features.   Some appear to be stalks, fronds, and the trace fossil Helminthopsis.  Other obscure forms might be algae or an Ediacaran fossil such as Kimberella.

Below is a map showing the location of Tackaberry’s active quarry (red square) and the abandoned Richmond quarry (blue square).    The map is based primarily on extracts from Ontario Geological Survey’s Maps P. 2724 and P. 2725 by Williams and Wolf (1984a, b).  It also contains changes based on Wilson, Liberty  and Reinhardt’s (1972) map.


 The two quarries are located about six kilometers directly north of Perth in Drummond North Elmsley Township.  The quarries are  located in an irregular shaped area of flat lying sedimentary rocks covering approximately 140 square kilometers that I have previously designated the “Drummond Sequence”  that has  been mapped by the Ontario Geological Survey (Williams and Wolf, 1984a, b): and by the Geological Survey of Canada (Wilson and Dugas, 1961; Wilson, Liberty,  and Reinhardt, 1972) as  Ordovician March Formation rocks (interbedded quartz sandstone, dolostone and sandy dolostone).  Finding the Ediacaran fossil Aspidella at the two quarries strongly suggests that the underlying rocks are of Ediacaran age.

The Drummond Sequence falls within the old Drummond Township (now Drummond North Elmsley Township).    On Map P2725 Williams and Wolf (1984a) have mapped the March formation (and hence, the Drummond Sequence) as extending northwest into the old Lanark Township (now the Township of Lanark Highlands).  Their mapping contradicts earlier mapping by Wilson, Liberty  and Reinhardt (1972) who mapped Nepean sandstone, and Precambrian marble, amphibolite and gneiss in that part of  old Lanark Township where Williams and Wolf (1984a) have mapped the March formation.  I have preferred Wilson, Liberty  and Reinhardt’s (1972) map and have shown their rock units in the northwest corner of the attached map.  Interestingly, Wilson and Dugas (1961) mapped a small area of Nepean sandstone ( 2 miles by 1/4 mile) not shown by Williams and Wolf (1984a, b) that falls  within the Drummond Sequence.

Williams and Wolf (1984a, b) show  the block that is the Drummond Sequence as bounded by faults that separate it on the west from Cambrian Nepean Formation Sandstone, on the southeast from March Formation,  on the Northeast from Cambrian Nepean Formation Sandstone, on the north and northwest from plutonic and metamorphic rocks of the Grenville Province of the Precambrian Shield.   As I have preferred Wilson, Liberty  and Reinhardt’s (1972) map, the Drummond Sequence is not bounded in the northwest by faults mapped by  Williams and Wolf (1984a) .  Intriguingly, Easton (2017) shows an additional  geophysically defined fault trending southwest- northeast that falls just north of the two quarries.   See Easton’s  (2017)  Figures 18.3. A) and B).

The rocks at the top of the Drummond Sequence have been mapped as the Ordovician March Formation by both the Ontario Geological Survey and the Geological Survey of Canada.  I found no body fossils in these rocks, but found trace fossils suggesting that the rocks are Ordovician (or Cambrian) in age (see photos Sam_0180,  Sam_182 and Sam_0525 shown on my September 13, 2013  blog posting).   The trace fossils are similar to ones found by others in March (Theresa) Formation rocks in New York State.   At Tackaberry’s active quarry the March Formation beds are at most a few meters thick..   

At Tackaberry's active quarry, in the  rocks that are mapped as the March Formation, is a meter thick  layer of rock coloured pink and buff and showing Liesegang banding and rings (Brett, 2012a, first five photographs) likely caused by diagenetic processes involving the circulation of subsurface waters.    The altered rock can be found in outcrops along Highway 7 just north of Perth where the rocks weather grey but the pink colour and the chemical banding in the rocks can still be seen.  Below that layer are tens of meters of flat lying, thin siltstone and sandstone beds bearing Ediacaran fossils (mainly Aspidella) and showing ripple marks (Brett 2019b) and microbial mat textures (Brett2012b, Brett2019c).  Minor carbonate beds are present.   At the base of the quarry are thick sandstone beds that exhibit polygonal cracking (Brett2019c, ninth photo), and which have not yielded any fossils.

For ease of future reference I will define the ‘Drummond Formation’ as that part of the Drummond Sequence that consists of interbedded Ediacaran quartz sandstone, siltstone and minor carbonate rock.   The quartz sandstones and siltstones are thinly to thickly bedded, fine grained, and well sorted. The sandstones and siltstones are coloured light grey, dark grey, brown, buff and reddish brown.   Ripple marks and microbial mat textures are common. Liesegang banding is present in a layer close to the top of the sequence.  Aspidella and other Ediacaran fossils are present.

 Dr. Easton of the Ontario Geological Survey mapped the Precambrian geology of the Perth and Carleton Place areas over the last five years.   He has a map in preparation -- Precambrian geology of the Perth area; Ontario Geological Survey, Preliminary Map P.3818 -- that will hopefully shed some light on the faults and rocks of the Drummond Sequence.     Dr. Easton (2018) noted that  “Most of the major faults shown on the Paleozoic geology map of Williams and Wolf (1984[b]) located solely in Precambrian rocks present in the western half of the Carleton Place map area could not be validated by geology or geophysics.”  The Carleton Place map area covers the northern half of the Drummond Sequence.


Christopher Brett
Ottawa, Ontario


REFERENCES and SUGGESTED READING

Brett, C.P., 2012a
Mud cracks, Liesegang bands and Liesegang rings, and possible Soft-Sediment Deformation Structures in Sedimentary Rocks of Lanark County, Ontario in an Area Mapped as March Formation. Blog posting, 19 October 2012
http://fossilslanark.blogspot.com/2012/10/

Brett, C.P., 2012b
From Trails, to Mud Cracks to Evidence of Microbial Mats: Different Theories For Curved Lines in the troughs of ripple marks in Sandstone.  Blog Posting 5 November 2012
http://fossilslanark.blogspot.com/2012/11/from-trails-to-mud-cracks-to-evidence.html

Brett, C. P., 2019a
Concentric Structures in the Sedimentary Rocks of Lanark County, Ontario that are identical to the Ediacaran Holdfast Aspidella.  Blog posting dated  8 March 2019 -
http://fossilslanark.blogspot.com/2019/03/holdfasts-in-lower-ordovician-march.html

Brett, C. P., 2019b
 Fossil Ripple Marks in Rocks Near Perth Ontario. Blog posting dated 17 March 2019,

Brett, C. P., 2019c
Possible Fossil Microbial Mat Structures in Rocks Near Perth, Ontario.  Blog posting dated 28 March 2019.

Brett, C. P., 2019d
A Selection of Fossils from the ‘March Formation’ in Lanark County, Ontario - A Correction.  Blog posting dated  24 March 2019
http://fossilslanark.blogspot.com/2019/03/a-selection-of-fossils-from-march.html

Brett, C. P., 2019e
If the Ediacaran discoid holdfast Aspidella, why not Ediacaran Stalks, Spindles and Fronds in Lanark County?   Blog posting dated   29 March 2019
http://fossilslanark.blogspot.com/2019/03/if-ediacaran-discoid-holdfast-aspidella.html

Brett, C. P., 2019f - Tubular Structures in the Ediacaran Drummond Sequence in Lanark County, Ontario.  Blog posting dated  22 October 2019   http://fossilslanark.blogspot.com/2019/

Easton, R. M., 2015
Project Unit 15-014. Precambrian and Paleozoic Geology of the Perth Area, Grenville Province, in Summary of Field Work and Other Activities, 2015. Ontario Geological Survey, OFR 6313
at pages 18-1 to 18- 13   

Easton, R.M. 2016. Precambrian and Paleozoic geology of the Perth area, Grenville Province; in Summary of Field Work and Other Activities, 2016, Ontario Geological Survey, Open File Report 6323, p.17-1 to 17-13.

Easton, R.M., 2017
Precambrian and Paleozoic Geology of the Carleton Place Area, Grenville Province.  Project SO-17-001, Chapter 18 in Ontario Geological Survey 2017. Summary of Field Work and Other Activities, 2017; Ontario Geological Survey, Open File Report 6333, 408p.

Easton, R. M. 2018
Precambrian Geology and Mineral Potential of the Carleton Place Area, Grenville Province . Chapter 14. Project SO-17-001. In Ontario Geological Survey 2018. Summary of Field Work and Other Activities, 2018; Ontario Geological Survey, Open File Report 6350, 426p.

Easton, R.M., 2020 [in press].
 Precambrian geology of the Perth area; Ontario Geological Survey, Preliminary Map P.3818, scale 1:50 000.

Williams, D.A., and Wolf, R.R., 1984a
Paleozoic Geology of the Perth Area, Southern Ontario; Ontario; Geological Survey, Map P. 2724, Geological Series-Preliminary Map, scale 1:50 000. Geology 1982.
http://www.geologyontario.mndmf.gov.on.ca/mndmfiles/pub/data/imaging/P2724/P2724.pdf

Williams, D.A., and Wolf, R.R.,  1984b
Paleozoic Geology of the Carleton Place Area, Southern Ontario; Ontario Geological Survey, Map P. 2725, Geological Series-Preliminary Map, scale 1:50 000. Geology 1982.

Wilson, A. E., Liberty, B. A., and Reinhardt, 1972,
Geology Carleton Place, Ontario.  Map 1362, Geological Survey of Canada. Scale 1:50,000
Paleozoic geology by A. E. Wilson, 1946.  Paleozoic compilation by B. A. Liberty, 1963, with changes and additions by E. W. Reinhardt, 1972.  Precambrian geology and compilation by E. W. Reinhardt, 1963, 1969, 1972

Wilson, M E; Dugas, J., 1961
Geological Survey of Canada, "A" Series Map 1089A, 1961, 1 sheet; https://doi.org/10.4095/107951 

 FIELD TRIP GUIDES, ETC., CO-AUTHORED BY DAVE FORSYTH

Donaldson,  Al, Forsyth, Dave,  Findlay, Chris  and Bud Andress, 2010
Fall geology/ecology boat tour - St Lawrence River  1000 Islands.  October 17, 2010.
http://www.frontenacarchbiosphere.ca/explore/fab-education/geology/st-lawrence-river-thousand-islands-geology-boat-tour

Forsyth, D.A. and Forsyth, M.E. 2013a
Madawaska to Macnamara Trail and Macnamara Trail Geotours. Macnamara Field Naturalists Club.    www.mfnc.ca
https://mfnc.ca/wp-content/uploads/2013/02/arnpriorgeotour.pdf

Forsyth, D.A. and Forsyth, M.E.,  2013b
A  geology primer for the Morris Island Conservation Area..  Macnamara Field Naturalists Club.
https://mfnc.ca/wp-content/uploads/2013/02/morrisislandconversationarea_geology.pdf

Forsyth, D.A. and Forsyth, M.E., 2011,
Pillars in the Park, GAC/AGC - MAC/AMC - SEG - SGA  Joint Annual Meeting, Ottawa 2011, Abstracts Volume 34, at page 66
https://gac.ca/wp-content/uploads/2018/11/2011_Ottawa2011AbstractsVolume.pdf

Forsyth, D.A., 2011
Evidence and Hypothesis – How the Sandstone Cylinders Formed
GAC/AGC - MAC/AMC - SEG - SGA  Joint Annual Meeting, Ottawa 2011, Abstracts Volume 34, at pages 66-67
https://gac.ca/wp-content/uploads/2018/11/2011_Ottawa2011AbstractsVolume.pdf

Saturday, 15 August 2020

Dr. Easton’s Sandstone Outcrop at Gillies Corners, Lanark County - Part 2

 I dropped over to look at Dr. Easton’s outcrop this week.  Below are two photographs (347 and 351) of the rounded, nodular pseudomorphs of evaporite minerals.  The nodules originally could have been any of gypsum, anhydrite, halite, barite, phosphate.

Below is a better photograph of Dr. Easton’s outcrop (356) showing the March formation at the top and the underlying Nepean formation.    

In addition below is a photograph (366) of a piece of the fine grained  buff sandstone that is arguably wind blown (aeolian erg) sandstone.  I wetted the sample so that the layering is visible.  The numbers on the blue ruler record centimeters.  

 

Another Outcrop on Malcolms Way

I also looked at an outcrop that is about 150 meters to the east along Malcolms Way.  Below are two photographs (359 and 362) showing the darker March formation on top and the underlying Nepean formation.  The  silver ruler is a meter stick with inches and centimeters numbered.

Christopher Brett
Ottawa

Addendum (September 15, 2020):  Another interpretation of the outcrops is that all of the rock is March (Theresa) formation.  This is because interbedded with typical March sandy dolomites and dolomites one finds beds of  siliceous sandstone identical to Nepean sandstone.   This can be seen in outcrops of the March (Theresa) formation at the outskirts of Smith Falls heading north on Highway 15. 

Interestingly, Keith’s map 1946-9 of the distribution of Potsdam sandstone in Eastern Ontario (which was in part based on mapping by Morley E. Wilson and by Alice E. Wilson)  shows an area of Potsdam sandstone where “Calcareous and argillaceous sandstone predominate”extending to Gilles Corners.  Some areas on Keith’s map where “Calcareous and argillaceous sandstone predominate” are now mapped as Potsdam Group sandstone and some as the March formation. 

SUGGESTED READING -  SABKHA NODULES

Bréhéret, Jean-Gabriel and Brumsack, Hans-J., 2000
Barite concretions as evidence of pauses in sedimentation in the Marnes Bleues Formation of the Vocontian Basin (SE France).  Sedimentary Geology 130(3):205-228  February 2000  
https://doi.org/10.1016/S0037-0738(99)00112-8
 
Butrenchuk, S., 1996
Phosphate Deposits  in British Columbia.  British Columbia  Geological Survey Branch., Bulletin 98, 136 pages
http://cmscontent.nrs.gov.bc.ca/geoscience/PublicationCatalogue/Bulletin/BCGS_B098.pdf
 
Fryberger, Steven G.; Abdulkader M. Al-Sari; Thomas J. Clisham, 1983 

Eolian Dune, Interdune, Sand Sheet, and Siliciclastic Sabkha Sediments of an Offshore Prograding Sand Sea, Dhahran Area, Saudi Arabia
AAPG Bulletin (1983) 67 (2): 280–312.
https://doi.org/10.1306/03B5ACFF-16D1-11D7-8645000102C1865D
 
Garden,U.R.; S.C.Guscott, S.D.Burley , K.A. Foxford, J. J. Walsh and J. Marshall, 2001
An exhumed palaeo-hydrocarbon migration fairway in a faulted carrier system, Entrada Sandstone of SE Utah.  Geofluids (2001)1, 195 -213
https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1468-8123.2001.00018.x

Ge, Y.,  C. L. Pederson, S. W. Lokier, J. P. Traas, G. Nehrke, R. D. Neuser, K. E. Goetschl,
A, Immenhauser,  2020
Late Holocene to Recent aragonite-cemented transgressive lag deposits in the Abu Dhabi lagoon and intertidal sabkha.  Sedimentalogy, Volume67, Issue 5, Pages 2426-2454
https://doi.org/10.1111/sed.12707

Keith, M. L.,1946
Sandstone as a  source of silica sands in southeastern Ontario; Ontario Dept. Mines, Vol.55, pt.5, 36p. (published 1949). Accompanied by Map 1946-9, scale l inch to 2  miles

McMackin, Matthew and William Godwin, 2016
Sabkha, in Encyclopedia of Engineering Geology (pp.1-2),Editors: P.  T. Bobrowsky, B. Marker
DOI: https://doi.org/10.1007/978-3-319-73568-9_26
DOI: 10.1007/978-3-319-12127-7_248-1

West, Ian M., Y. A. Ali; M. E. Hilmy, 1979
Primary gypsum nodules in a modern sabkha on the Mediterranean coast of Egypt.
Geology (1979) 7 (7): 354–358.
https://doi.org/10.1130/0091-7613(1979)7<354:PGNIAM>2.0.CO;2

Zhou, X.,  D. Chen, S. Dong, Y. Zhang,  Z. Guo, H.Wei, H.Yue, 2015
Diagenetic barite deposits in the Yurtus Formation in Tarim Basin, NW China: Implications for barium and sulfur cycling in the earliest Cambrian. Precambrian Research  Volume 263, July 2015, Pages 79-87 https://doi.org/10.1016/j.precamres.2015.03.006 See Figure 3.


 

Sunday, 9 August 2020

Dr. Easton’s Sandstone Outcrop at Gillies Corners, Lanark County

Over the past five years Dr. Michael Easton of the Ontario Geological Survey has been mapping the Precambrian rocks of Eastern Ontario.  This is Dr. Easton's 2017 report of a previously unreported outcrop of Nepean Formation sandstone in Lanark County:    
 
“The northeastern boundary of the geophysical anomaly may also be fault bounded because a  previously undocumented inlier of Nepean Formation rocks occurs at Gillies Corners (UTM 413795E 4984105N), 4.3 km southwest of Frankto[w]n, immediately south of the northwestern boundary of the geophysical anomaly (see Figure 18.3A).   This sudden appearance of a stratigraphically lower unit in an area underlain by rocks of the stratigraphically higher March Formation, suggests that if a fault is present, it is down-dropped to the north.”

Dr. Easton’s location UTM 413795E 4984105N  converts to Latitude : 45.005155 deg, or 45 deg 0 min 18.558 sec.  Longitude: -76.093858 deg, or -76 deg 5 min 37.889 sec.   Plugging 45.005155, -76.093858 into Google will show the location of the outcrop.

In June I took County Road 10 when I was driving back to Ottawa from Perth, and stopped at Gillies Corners to look at Dr. Easton's outcrop of Nepean Formation sandstone.    [While the road is mapped as Perth Road, as Drummond Concession 2 and as County Road 10, most in Perth call it the Franktown Road.   Those living in Franktown call it the Perth Road.  I have yet to meet anyone in Perth who calls it County Road 10, but it is identified as such by those from Ottawa and on Google Maps.]

The sandstone outcrops on both sides of Malcolms Way,  with the best outcrops about 100 meters east of Gillies Corners Side Road.   The better outcrop, on the north side of Malcolms Way,  is about  30 yards long and 5 feet high and is flat lying, fresh sandstone.   Most of the outcrop is Nepean formation white to buff sandstone.   There are additional smaller, badly weathered,  outcrops to the east along Malcolms Way.

Four photographs of the best outcrop are provided below [331, 339, 340, 341] :

The ruler in the photographs is a meter stick, with inches and centimeters marked.

The second photograph shows a layer of dark rock at the top, which is likely March formation (or younger Oxford formation), with an uncomformity between the underlying Nepean Formation sandstone and the overlying March Formation.   (The weathered dark rock also outcrops further east along Malcolms Way.)

 In earlier blog postings I mentioned that Dave Lowe (2016 )  has recognized six siliciclastic paleoenvironments in the Potsdam Group sandstones:  a) braided fluvial,  b) ephemeral fluvial, c) aeolian erg, d) coastal sabkha, e) tide-dominated marine and  f) open-coast tidal flat.   Interestingly, the Nepean formation sandstone at this location displays at least two and possibly three different facies.

A layer that extends over much of the length of the outcrop that is full of rounded, nodular pseudomorphs of evaporite minerals,  is Dave Lowe’s coastal sabkha facies.  See the second and third photos.  My third photo compares well with Dave Lowe’s (2016) photo 3.8A which he describes as “Impressions of sparry, nodular radiating mineral aggregates from Kanata, ON (locality 14),” which is behind Kanata’s Walmart.

At the top of the Nepean formation sandstone at this outcrop is a layer with vertical burrowing (second and fourth photo’s).  I had originally thought this to be Dave Lowe’s marine facies, but it is more likely burrowing in the sabkha facies sediments.

Most of the lower two thirds of the outcrop is a fine grained, white to buff sandstone that is arguably wind blown (aeolian erg) sandstone.

 Williams and Wolf’s (1984) Map P.2725 puts Gillies Corners in the March Formation,  and placed the fault bounded boundary between the Nepean and March at about four kilometers west of Gillies Corners.  Below is a map compiled from   Williams and Wolf’s (1984) Maps P.2725 and P.2724 upon which I have plotted the location of Dr. Easton’s outcrop with a red square.

Wilson, Liberty, and Reinhardt’s (1972) geologic map covers the  area north of where I have written ‘GILLIES CORNERS’ on my map.  They also mapped Gillies Corners as falling within the March Formation and show the boundary between the Nepean and March at about four kilometers west of Gillies Corners.  Interestingly, they also plot a small area of Nepean Sandstone (about a kilometer long and 200 meters wide)  about five kilometers north of Dr. Easton’s outcrop, along Line Road 6 where it  intersects  Gillies Corners Side Road.  I’ve marked this small area on the map with a blue oval shape.

 Curiously, an additional outcrop of Nepean sandstone appeared on Wilson,, Liberty and Reinhard’s (1964) preliminary  Map 7-1964, that did not appear on the finished map.  This was a small area along Gillies Corners Side Road about three kilometers north-northwest of Dr. Easton’s outcrop.  Intriguingly, Reinhardt, who was the last to edit the Paleozoic compilation, was an expert on Precambrian rocks rather than Paleozoic rocks.

Jean Dugas, for his 1952 doctoral thesis, mapped the geology of the Perth map area, which included the area south of Gillies Corners.  GSC Map 1089A by Wilson and Dugas (1961) replicates a map that is part of his thesis.  Dr. Morley Wilson is credited as the first author as part of the map-area had been surveyed in 1930 by Dr. Morley  Wilson, who mapped most of Palaeozoic area on the eastern part of the sheet.  Wilson and Dugas’ map shows a number of areas of Nepean sandstone that do not appear on Williams and Wolf’s (1984) Maps P.2725 and P2724.  For example, their map 1089A shows small occurrences of Nepean sandstone 4 km southwest of Gillies Corners, 4 km south of Gillies Corners, and 3 km east-southeast of Gillies Corners.  The largest of these is 1.5 miles long and 1/4 mile wide and cuts across County Road 10 just west of Cockburn Creek.

It has been over seventy years since Dr. Alice E. Wilson mapped the Paleozoic geology north of Gillies Corners and ninety years since Dr. Morley E. Wilson  mapped the Paleozoic geology south of Gillies Corners, and some outcrops that they found are now difficult to find.  What would have been farmland when they mapped the area is now overgrown with brush and trees.   Other outcrops are obscured by housing developments.


I brought Dr. Easton’s outcrop to the attention of  two geologists who have worked on the Nepean Formation and March Formation and sent them the photos.   One commented “The disconformable contact with the March/Theresa  is very interesting — we generally only see that kind of a relationship in association with a fault.”   The other noted that “A disconformable contact at the “Nepean-March” ... formation boundary has been a contentious issue over the years.”

The outcrop is worth a visit if you are interested in the Nepean Formation of the Potsdam Group.

Recent Comments on Potsdam sandstone

Below I’ve provided a few of the more recent commentaries on Potsdam sandstone.  Landing et al. (2019), Lowe et al. (2019) and Brink et al. (2019) have contradictory views.   

I’ve also included two papers by Bernius who reported on core from the GSC’s Borehole Geophysics Test Area at Bell’s Corners, Ottawa. His papers have been overlooked   What is particularly interesting is that the core contains a 50 cm thick shale layer in the Nepean Formation.   Bernius also found that the upper contact of the Nepean formation with the March Formation is a disconformity. 

Christopher Brett
Ottawa

Addendum (September 15, 2020): Another interpretation of the outcrop is that all of the rock is March (Theresa) formation.  This is because interbedded with typical March sandy dolomites and dolomites one finds beds of  siliceous sandstone identical to Nepean sandstone.   This can be seen in outcrops of the March (Theresa) formation at the outskirts of Smith Falls heading north on Highway 15. 

Interestingly, Keith’s map 1946-9 of the distribution of Potsdam sandstone in Eastern Ontario (which was in part based on mapping by Morley E. Wilson and by Alice E. Wilson)  shows an area of Potsdam sandstone where “Calcareous and argillaceous sandstone predominate”extending to Gilles Corners.  Some areas on Keith’s map where “Calcareous and argillaceous sandstone predominate” are now mapped as Potsdam Group sandstone and some as the March formation. 

Keith, M. L.,1946
Sandstone as a  source of silica sands in southeastern Ontario; Ontario Dept. Mines, Vol.55, pt.5, 36p. (published 1949). Accompanied by Map 1946-9, scale l inch to 2  miles


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REFERENCES AND SUGGESTED READING

Bernius, G. R., 1981,
Boreholes Near Ottawa for the Development and Testing of Borehole Logging Equipment - A preliminary Report GSC Paper 81-1C, p. 51-53
 
Bernius, G. R., 1996,
Borehole Geophysical Logs from the GSC Borehole Geophysics test site at Bell’s Corners, Nepean, Ontario, GSC Open File 3157, 38 pages, doi:10.4095/207617 (pdf  6427 KB)

Brett, C. P.,  2016
Gypsum Pseudomorphs that formed in the Sabkha Environment of the Potsdam Group.   Blog posting December 1, 2016
http://fossilslanark.blogspot.com/2016/12/gypsum-pseudomorphs-that-formed-in.html

Brett, C. P., 2017
Why has hardly anyone referred to core from the GSC’s Borehole Geophysics Test Area at Bell’s Corners, Ottawa, when the core contains a 50 cm thick shale layer in the Nepean Formation and the core straddles the boundary between the Nepean Formation and the overlying March Formation?”      Blog posting dated May 22, 2017
http://fossilslanark.blogspot.com/2017/05/

Brink R, Mehrtens C, Maguire H, 2019
Sedimentology and petrography of a lower Cambrian transgressive sequence: Altona Formation (Potsdam Group) in northeastern New York.  Bulletin of Geosciences, 94, 369-388
http://www.geology.cz/bulletin/contents/art1728

Dix, G.R., Salad Hersi, O., and Nowlan, G.S., 2004,
The Potsdam–Beekmantown Group unconformity, Nepean Formation type section (Ottawa, Ontario): a cryptic sequence boundary, not a conformable transition: Canadian Journal of Earth Sciences, v. 41, no. 8, p. 897–902,  https:// doi .org /10 .1139 /e04 -040 .

Dugas, Jean, 1952,
 Geology of the Perth map area, Lanark and Leeds Counties, Ontario; Ph. D., McGill, 189 pages, four  maps.  
http://www.collectionscanada.gc.ca/obj/thesescanada/vol2/QMM/TC-QMM-124004.pdf
https://escholarship.mcgill.ca/concern/theses/t435gh12d

Easton, Michael, 2017
Precambrian and Paleozoic Geology of the Carleton Place Area, Grenville Province,  pages 18-1 to 18-18 In Summary of Field Work and Other Activities 2017, Ontario Geological Survey, Open File Report 6333,
http://www.geologyontario.mndm.gov.on.ca/mndmaccess/mndm_dir.asp?type=pub&id=ofr6333

Landing, E., Salad Hersi, O.,  Amati, L., Westrop, S.R., Franzi, D.A., 2019
Early Paleozoic rifting and reactivation of a passive-margin rift: Insights from detrital zircon provenance signatures of the Potsdam Group, Ottawa graben: Comment. GSA Bulletin; March/April 2019; v. 131; no. 3/4; p. 695–698; https://doi.org/10.1130/B35104.1; published online 25 January 2019.

Lowe, David G., 2016
Lower Ordovician Potsdam Group in the Ottawa Embayment and Provenance of the Cambrian – Lower. Ordovician Potsdam Group in the Ottawa. Embayment and Quebec Basin. David G. Lowe. Doctoral Thesis submitted to the University of Ottawa
https://ruor.uottawa.ca/
http://hdl.handle.net/10393/35303
http://dx.doi.org/10.20381/ruor-261

Lowe, David G, and R.W.C. Arnott, 2016
 Composition and Architecture of Braided and Sheetflood-Dominated Ephemeral Fluvial Strata In the Cambrian–Ordovician Potsdam Group: A Case Example of the Morphodynamics of Early Phanerozoic Fluvial Systems and Climate Change
Journal of Sedimentary Research, v. 86, i. 6, p. 587-612, Published in June 2016, doi:10.2110/jsr.2016.39  

Lowe, D.G., Arnott, R.W.C., Chiarenzelli, J.R., and Rainbird, R.H., 2018,
Early Paleozoic rifting and reactivation of a passive-margin rift: Insights from detrital zircon provenance signatures of the Potsdam Group, Ottawa graben: Geological Society of America Bulletin, v. 130, no. 7/8, p. 1377–1396, https:// doi .org /10.1130 /B31749 .1 .

Lowe, D.G., Arnott, R.W.C., Chiarenzelli, J.R., and Rainbird, R.H., 2019,
Early Paleozoic rifting and reactivation of a passive-margin rift: Insights from detrital zircon provenance signatures of the Potsdam Group, Ottawa graben: Reply. Geological Society of America Bulletin, March/April 2019, v. 131, no. 3/4, pages 699-703; published online January 25, 2019.  https://pubs.geoscienceworld.org/gsa/gsabulletin/article/131/3-4/699/568492/Early-Paleozoic-rifting-and-reactivation-of-a

Lowe, David G.;  Arnott, R.W.C.; Nowlan, G.; McCracken, A.D., 2017
Lithostratigraphic and allostratigraphic framework  of the  Cambrian-Ordovician Potsdam Group and correlations  across Early Paleozoic southern Laurentia.  Canadian Journal of Earth Sciences  2017, 54(5): 550-585, https://doi.org/10.1139/cjes-2016-0151

Williams, D.A., and Wolf, R.R.,  1984a
Paleozoic Geology of the Carleton Place Area, Southern Ontario; Ontario Geological Survey, Map P. 2725, Geological Series-Preliminary Map, scale 1:50 000. Geology 1982.

Williams, D.A., and Wolf, R.R., 1984b
Paleozoic Geology of the Perth Area, Southern Ontario; Ontario; Geological Survey, Map P. 2724, Geological Series-Preliminary Map, scale 1:50 000. Geology 1982.

Wilson, Alice E., Liberty, B. A., and Reinhardt, E.W., 1964,
Geology Carleton Place, Ontario.  Map 7-1964, Preliminary Series, Geological Survey of Canada. Scale 1:50,000 Paleozoic geology by A. E. Wilson, 1946.  Paleozoic compilation by B. A. Liberty, 1963. Precambrian geology and compilation by E. W. Reinhardt, 1963.

Wilson, Alice E., Liberty, B. A., and Reinhardt, E.W.,  1972,
Geology Carleton Place, Ontario.  Map 1362, Geological Survey of Canada. Scale 1:50,000
Paleozoic geology by A. E. Wilson, 1946.  Paleozoic compilation by B. A. Liberty, 1963, with changes and additions by E. W. Reinhardt, 1972.  Precambrian geology and compilation by E. W. Reinhardt, 1963, 1969, 1972

Wilson, Morley E. and  Dugas, Jean,  1961,
Map 1089A, Geology, Perth, Lanark and Leeds Counties, Ontario, Geological Survey of Canada; Geology by Morley E. Wilson, 1930 and Jean Dugas, 1949; Descriptive notes by Jean Dugas.
https://doi.org/10.4095/107951