Friday, 29 April 2016

A specimen of Eozoon Canadense at the Matheson House Museum in Perth, Ontario

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             Eozoön (ē-o-zō’on) a supposed gigantic fossil foraminifer found in marble of the Laurentian              rocks of Canada , whe...
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Thursday, 17 March 2016

When Stromatolites Were called Concretions, Devil’s Pots, Snow-shoe Tracks and Cannon Balls

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    "The paradox presented by stromatolites is conveyed by Ginburg’s (1991, p. 25) impish comment that “few observers have any difficul...
Tuesday, 26 January 2016

Fluvio-glacial Sculpted Forms in Outcrops Near Newboro, Eastern Ontario

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Geologists and geographers who study glacial eroded features in bedrock can distinguish between: (a) features  which are formed by boulders,...
Tuesday, 29 December 2015

More Evidence of Microbial Mats in Potsdam Sandstone near Newboro, Eastern Ontario

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Winter has arrived in Eastern Ontario.  Eight centimeters of snow fell last night and more is forecast for today.   I’m glad that on Decembe...
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Wednesday, 23 December 2015

Dewatering Structures, Biofilm Structures, Glacial Striae and Chatter Marks in Potsdam Sandstone near Newboro, Eastern Ontario

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It has been a remarkably warm December for Eastern Ontario and we have yet to receive anything more than a light dusting of snow.  Yesterday...
Tuesday, 15 December 2015

Problematic Markings (Dubious Fossils) in Potsdam Sandstone

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Below are two photographs that I took over two years ago of one side of a loose slab of Potsdam sandstone that I noticed at the quarry at El...
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Wednesday, 4 November 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

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At the end of this blog posting I’ve provided a list of articles discussing stromatolites and biofilm structures in Potsdam (Group) Sandston...