Grand Canyon Folds by Dr. Andrew Snelling
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https://www.youtube.com/watch?v=ilxANIAi7fE The Cambrian Tapeats Sandstone is at the base of the Paleozoic sedimentary strata sequence in Grand Canyon, deposited in conventional terms 507-508 million years ago. The whole strata sequence was uplifted 450 million years later to form the Kaibab Plateau, by which time the Tapeats Sandstone and overlying layers were apparently fully cemented. Yet […]