Ok I read that there were corals in the Kaibab layer but I see they were not referring to coral reefs, but the presence of corals. My bad.
Even so, in a flood model that claims the rapid sedimentation of marine life, to have another marine environment in the middle of the flood showing sharks teeth, corals etc etc seems unlikely. Why were they there, did the sedimentation rates slow down for a bit for outside marine life to swim into the area and then be also raidly covered with sediment? I'm trying to understand the processes that create this second Kaibab marine layer right in the middle of the flood deposits, it seems post-flood to me.
I've come across an argument for most of the Grand Canyon (Tapeats to Kaibab) being laid down by the flood. The East Kaibab Monocline:
The normal explanation for this is that heat and pressure caused the rock
layers to bend very slowly without breaking or cracking, but rocks that are folded by heat and pressure should become metamorphic, at least in the apex area of the folds (when you bend a metal plate, temperature increases in the apex of the fold). For example, quartz sandstone should turn into a quartzite. You should see metamorphic minerals or recrystallization in the rock due to such plastic behavior."But such metamorphic minerals or recrystallization due to such plastic behavior is not observed in these rocks. The sandstone and limestone in the folds are identical to sedimentary layers elsewhere.The only logical conclusion is that the 440-million-year delay between deposition and folding never happened! Instead, the Tapeats-Kaibab strata sequence was laid down in rapid succession early during the year of the global cataclysmic Genesis Flood, followed by uplift of the Kaibab Plateau within the last months of the Flood. This alone explains the folding of the whole strata sequence without appreciable fracturing."
 R. H. Vernon, Metamorphic Processes: Reactions and Microstructure Development
(London: George Allen & Unwin, 1976); K. Bucher and M. Frey, Petrogenesis of Metamorphic Rocks
, 7th ed. (Berlin: Springer-Verlag, 2002).
 Emil Silvestru, "Should atheists be free to teach what they believe?; and the 'folding of solid rocks'," Creation Ministries International
(10 October 2009); http://creation.com/...teaching-rights
 Ref 1; G. H. Davis and S. J. Reynolds, "Deformation Mechanisms and Microstructures," Structural Geology of Rocks and Regions
, 2nd ed. (New York: John Wiley & Sons, 1996), pp. 150-202.
 Andrew A. Snelling, "Rock Layers Folded, Not Fractured," Answers in Genesis
(March 15, 2009); http://www.answersin...d-not-fractured