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Colorado River Raft Tour - the Dox Formation & Chuar Group strata

By Geology and Ecology of National Parks
This is a photo of Precambrian-age sedimentary rocks of the Dox Formation and Chuar Group strata.
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Detailed Description

~Mile 65.5: View of Precambrian-age sedimentary rocks of the Dox Formation (dark red on left) and Chuar Group strata (on right, mostly mudstones Galeros Formation) in upper Lava Creek drainage (about a mile north of the Colorado River).

Sources/Usage

Public Domain.