this post was submitted on 11 Dec 2023
125 points (99.2% liked)

Michigan

842 readers
2 users here now

total subscribers


Si quaeris peninsulam amoenam in braccas mea vide

   🫴

      ✋


Banner photos credits

founded 2 years ago
MODERATORS
 

There have been 6,000 shipwrecks in the great lakes, take that Bermuda triangle!

you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 8 points 11 months ago

The continent was actually Laurentia back then. Lake Ontario, the St Lawrence Valley and the Gulf of St Lawrence are all part of the same rift.

Lakes Michigan, Huron and Erie are all the shorelines of ancient seas that were ringed by coral. This left behind soft Calcite rock that the glaciers carved away.