The strata over an area apparently greater in extent than ten-thousand square miles have an overwhelming characteristic of "flat gap" parallel boundaries between the layers in and far beyond the Grand Canyon. Such "paraconformities", as they are called, generally lack evidence of erosion. And to the extent that the boundaries are parallel, they not only lack evidence of erosion, but they also lack uneven deposition of sediments, even over thousands of square miles! In this way, these flat gaps call into question the claim that these sediments were deposited over a 250-million year period! In our RSR Grand Canyon series, see more about this problem (in part 2) and its solution (i.e., liquefaction, beginning at 25 minutes into part 4.)
See thousands of more photos showing the "flat gap" parallel lines of the conforming strata with their missing erosion and lack of uneven deposits which make up a characteristic feature of the layers of the Grand Canyon region!