By Capt. Paul (Eclogite) on Saturday, April 29, 2023 - 10:45 am:
While similar in appearance, Pictured Rocks and the Niagara Escarpment are two very different formations.
The Niagara Escarpment is composed almost entirely of limestone and dolomite (both carbonates) and forms a prominent ridge along the outer edge of the Michigan Basin. The rocks that make up Pictured Rocks are much older and are made up of sandstone derived from ancient river and shallow marine deposits.
Want to know more? I know a good book that describes both in greater detail... ;-)
By D. A. (Midwested) on Sunday, April 30, 2023 - 01:14 pm:
Thanks Capt. Paul, looking forward to reading it.