Q: Do rock layers show evidence of the Flood? What evidence do we have that the Genesis Flood, as described in Genesis 7 and 8, really occurred?
A: Genesis 7 explains that water covered all the high hills and the mountains, and that all air-breathing life on the land was swept away and perished. As part of the evidence of the Flood, we would expect to find rock layers all over the earth filled with billions of dead animals and plants that were rapidly buried and fossilized in sand, mud, and lime.
And that’s exactly what we find.
On every continent are found layers of sedimentary rocks over vast areas. Many of these sediment layers can be traced all the way across continents, and even between continents. Furthermore, when geologists look closely at these rocks, they find evidence that the sediments were deposited rapidly.
Consider the sedimentary rock layers exposed in the walls of the Grand Canyon in northern Arizona. This sequence of layers is not unique to that region of the USA. For more than 50 years geologists have recognized that these strata belong to six megasequences (very thick, distinctive sequences of sedimentary rock layers) that can be traced right across North America.
The lowermost sedimentary layers in Grand Canyon are the Tapeats Sandstone, belonging to the Sauk Megasequence. It and its equivalents (those layers comprised of the same materials) cover much of the USA. We can hardly imagine what forces were necessary to deposit such a vast, continent-wide series of deposits. Yet at the base of this sequence are huge boulders and sand beds deposited by storms. Both are evidence that massive forces deposited these sediment layers rapidly and violently right across the entire USA. Slow-and-gradual processes cannot account for this evidence, but the global catastrophic Genesis Flood surely does.