File:Gunflint Chert (Paleoproterozoic, ~1.878 Ga; near Port Arthur, Ontario, Canada) 2 (45445592754).jpg

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Chert from the Precambrian of Canada.

Proterozoic-aged black cherts from the northern shores of Lake Superior are famous for containing a very old microfossil biota. These fossils were first described in the mid-1960s.

Locality: unspecified site near the town of Port Arthur (also known as Thunder Bay), Ontario, Canada
Date
Source Gunflint Chert (Paleoproterozoic, ~1.878 Ga; near Port Arthur, Ontario, Canada) 2
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/45445592754 (archive). It was reviewed on 22 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

22 October 2019

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Date/TimeThumbnailDimensionsUserComment
current05:57, 22 October 2019Thumbnail for version as of 05:57, 22 October 20193,759 × 1,842 (4.39 MB)Rudolphous (talk | contribs)Transferred from Flickr via #flickr2commons

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