My Impression

This is my tentative context for the above discussion. Conforming rock strata almost certainly were all laid down at the same time as shown scientifically. There are many strata in the Grand Canyon. The canyon obviously was formed when two large ancient lakes breached the "dam" that used to be where the canyon is now. The canyon formed because the strata were still soft and easy to erode because they were deposited only a few centuries earlier. Mike thinks the strata formed when an impactor formed the Moon from the Earth, leaving the trace now seen as the East Pacific Rise and part of Antarctica etc. Cardona thinks the strata were deposited from Saturn flares. In either case it seems a supercontinent formed as a result. Fossils formed as plants and animals were buried in sediment at different levels depending on the organism's density and initial location etc. The Grand Canyon formed a few hundred years later. Then the shock dynamics event occurred 5 to 14 thousand years ago.