The Proceedings of the Eighth International Conference on Creationism (2018)

Whitmore and Garner ◀ The Coconino Sandstone ▶ 2018 ICC 616 Figure 48. Models of the internal structure and formation of subaqueous dunes. (A) Is after Hunter (1985) and shows the structure that subaqueous avalanches make. Notice the individual sets are broad and tabular compared to the tongue-like avalanche structures of eolian dunes (as seen in Fig. 22). (B) Is after Allen (1980) and shows that large foresets can be expected under conditions of large velocity strength and higher velocity symmetry indexes. The most similar dunes to those found in the Coconino are Class IA. Notice that these dunes are quite close to the plane-bed regime with just a bit more velocity strength.