Tag Archives: Monument fold

The Colorado River in the Grand Canyon – Blacktail Canyon, Mile 117 – 121

We tear ourselves away from Elves Chasm and drift downstream towards Blacktail Canyon, another favorite. In Stephen Aisle, at Mile 117, the Monument Fold fault intersects the river, and brings the Tapeats Sandstone to river level. Blacktail is a slot … Continue reading

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The Colorado River in the Grand Canyon – Miles 109 to 115

109 Mile Rapid follows closely after Shinumo Rapid. Evidence of more faulting and Supergroup rocks are seen there on river right. At the end of this straight stretch is Hakatai Canyon, on river right at Mile 110.9. The Tapeats Sandstone … Continue reading

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