Young-earth creationists (YECs) often assert that the Grand Canyon and rocks within it were all formed quickly during Noah's Flood or shortly afterward, only a few thousand years ago. However, many lines of geologic evidence, as well as radiometric dating results, thoroughly refute such claims. Among the most striking evidence for slow deposition and aerial exposure are the many beds within the Canyon's strata that animal tracks. Many occur in long, striding sequences and indicate animals walking about normally (not swimming, running, or laboring under harsh conditions). Moreover, many such trails were clearly made on dry deposits (many show sand-dune deposition, mud-cracks, and other clear evidence of aeirial exposure), entirely incompatible with a violent Flood scenario.
Review of ICR's book Grand Canyon: Monument to Catastropheby Greg Neyman
A Young Grand Canyon? by Timothy H. Heaton
Steve Austin's Grand Canyon Erosion Argument: A Mathematical Sleight of Hand by Glenn Morton
The Misguided Erosion Argument by Glenn Morton
Index to Creationist Claims: Claim CC365 (Coconino Sandstone):by Mark Isaac
Index to Creationist Claims: Claim CC365.1 (Coconino Sandstone, Formed Under Water?) by Mark Isaac
A Criticism of the ICR's Grand Canyon Dating Project by Chris Stassen
Coconino Sandstone by Greg Neyman