sunrise sign in

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· by doktrock.bsky.social ·1d ago · view on bsky.app ↗

Selkirk Member of the Ordovician Red River Formation, aka Tyndall Stone commercially, as seen in Winnipeg, Canada. Complex 3D burrows are interpreted as Thalassinoides; the color difference is due to dolomite vs calcite matrix. #FossilFriday urban

Wall of large blocks of the Tyndall stone on the Winnipeg Art Gallery

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Wall of large blocks of the Tyndall stone on the Winnipeg Art Gallery

#fossilfriday #geology

2 comments — live from bluesky

authodizer · 0 · 1d ago

A couple of webpages with Tyndall Stone info: heritage.entomb.ca/index.php/Ty... uwaterloo.ca/wat-on-earth... #FossilFriday

Bernd Andeweg · 1 · 1d ago

#urbangeology!!