"Great sandstone layers once covered this region, but erosion has left the valley a wide flat plain, interrupted by formations that rise high into the air...The sandstone layers can be clearly seen in the buttes. The lowest layer is Organ Rock shale, the middle de Chelly sandstone and the top layer is Moenkopi shale capped by Shinarump siltstone. Erosion of the soft shales of the Cutler Formation revealed the buttes as vertically jointed slabs of sandstone."(http://monumentvalley.org/geology/-This site would not agree with the concepts of flood geology but they discribe the errosion.) It is interesting to note that top layer is denoted Shinarump. This layer is a gravel layer is thought to have been laid down under fast flowing watery conditions. As well, this area is part of the Colorado Plateau which covers 130,000 sq miles in four SW states of the US.which would be supportive of massive flooding and erosion also consistent with a flood like Noah's. See geology section on this website for more info.
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