Three further evidences commonly presented for the Cretaceous/Tertiary (K/T) boundary being the location of the Flood/post-Flood boundary are: (1) the Tertiary cooling trend, (2) Tertiary mammals of the western United States, and (3) Tertiary bird and mammal tracks and the Devils corkscrews. However, a close analysis of these suggests that they raise more questions than they answer, supporting the idea that the end of the Flood corresponds to the Late Cenozoic.

In part 1,1 I documented that among creationists there are several major Flood models with variable ideas. For the time being and in face of many geological and geophysical unknowns, such a situation is healthy, according to the principle of multiple working hypotheses.2 Such differences are no more apparent than in the different ideas on the location of the Flood/post-Flood boundary and the extent of post-Flood catastrophism. This boundary is an important boundary and much research should be expended to locate it, assuming the geological column for sake of discussion.

I have developed eleven criteria with which to determine the boundary3 and I have about two dozen more to add—all saying the same thing: that the boundary is in the late Cenozoic. These criteria are based on an assortment of field studies, literature research, and geological deductions. Of the three main boundary positions proposed within the geological column, the Carboniferous boundary in the recolonization model4 has been analyzed and found to have many problems.5 The K/T boundary hypothesis, which states that the Flood/post-Flood boundary is at or a little above the Cretaceous/Tertiary boundary in the geological column, is much more popular than the Carboniferous boundary….

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