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Canyon De Chelly - contrast between sandstones

By Geology and Ecology of National Parks
This is a picture of different sandstones on the sides.
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Detailed Description

Note the contrast between the high cross stratification in the DeChelly Sandstone (Permian age) and the stark contrast in rock color and appearance across the disconformity and the gray conglomeratic sandstone of the Shinarump Conglomerate (Triassic).

Sources/Usage

Public Domain.