Category:Gunflint chert
Geologic formation in Minnesota and Ontario | |||||
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Media in category "Gunflint chert"
The following 5 files are in this category, out of 5 total.
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Asteroid tsunami in the Gunflint 1,850 my.jpg 3,600 × 2,170; 3.86 MB
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Microfossils Gunflint Chert 1.88 Ga.png 1,230 × 1,046; 1.66 MB