Tuesday, 17 March 2015

Dr. Edward Van Cortlandt, M.D., (1805-1875) of Bytown and Ottawa, Surgeon, Field Naturalist, Museum Curator and Amateur Geologist

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    “ This gentleman is well known in scientific and other circles as a mineralogist, geologist, botanist and physician of considera...
Friday, 30 January 2015

When Magnetite is not Fe3O4

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It has to be over ten years since I signed up to receive The Alchemist Newsletter from ChemWeb.com.   Over that period the newsletter has no...
Friday, 7 November 2014

A Contest to Find the Largest Glacial Erratic in Lanark County

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In 2016  the Town of Perth,  Tay Valley Township, Drummond North Elmsley Township and Beckwith Township will celebrate the 200th Anniversary...
Tuesday, 4 November 2014

Layering in the Mealy Mountains Anorthosite Complex, Labrador

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In my last posting I mentioned that I had seen spectacular layering in anorthosite intrusions in Labrador.  Below are photographs that I too...
Monday, 27 October 2014

Layering in the Lavant Gabbro Complex, Lanark County, Ontario

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The Lavant Gabbro Complex, which lies northwest of Perth,  is purported to be the largest mafic body in the Grenville Province of Ontario.  ...
Wednesday, 17 September 2014

Lake Iroquois and the Glaciofluvial Deltaic Deposit at Joes Lake, Lanark Highlands, Ontario

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About 18,000 years ago the Laurentide Ice Sheet reached its maximum thickness and  southward extent, covering Eastern Ontario with a thickne...
Wednesday, 20 August 2014

A Selection of Fossils from the March Formation in Lanark County, Ontario - Part 2

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My posting entitled A Selection of Fossils from the March Formation in Lanark County, Ontario  from  September 13, 2013 contained photograph...
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