Thursday, 29 September 2016

Eighty-one feet of Dark Grey Paleozoic Shale was Logged under the Potsdam by Bruce A. Liberty in Core from a Hole Drilled at Knowlton Lake, Ontario and reported in a Geological Survey of Canada Paper published in 1971

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I expect that many  people reading the title of this posting, if they have a working knowledge of the sedimentary rocks of Eastern Ontario, ...
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Thursday, 22 September 2016

Frothed Sandstone and Cylindrical Structures Found in Potsdam Sandstone

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If you  love coffee and in the past decade have visited Perth, Ontario you have undoubtedly stopped at Coutts Coffee at Code’s Mill (corner ...
Thursday, 1 September 2016

Mark your calendars for a Guided Quarry Tour on September 10, 2016 - Second Notice

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Below is an advertisement from the September 1st edition of the Perth Courier for the tour of OMYA’s Tatlock quarry on September 10th from 1...
Friday, 5 August 2016

What’s New in Potsdam Sandstone?

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Actually, quite a lot.   For those with a keen interest in the Potsdam sandstone of Eastern Ontario, Quebec and Northern New York State, the...
Tuesday, 5 July 2016

Mark your calendars for a Guided Quarry Tour on September 10, 2016

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One of Lanark County’s claims to fame is the high quality maple syrup that is produced at the maple sugar bushes that are located throughout...
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Sunday, 26 June 2016

Perthite from Near Perth, Ontario; Part 3

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I’ve previously written about Perthite from Perth, Ontario.   In my posting from Monday, January 14,  2013 I mention two outcrops south of P...
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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