Muav Limestone H Bright Angel Shale Tapeats Sandstone Nankoweap Group Youngest Chuar Shales Dox Sandstone Bass Shinumo Quartzite Dolomite Hakatai Shale GRAND CANYON Igneous sill Gravel INNER GORGE F, J: Igneous; K, D: Metamorphic; M, E, L, C, B, A, I, H, G: sedimentary Zoroaster Granite Vishnu Schist J. Oldest Precambrian Cambrian

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