MILE 10A large chunk of Coconino Sandstone, planted on its edge in the middle of the river, prompting visions of a wild ride and a big splash.
We got a few minutes of rain 10 minutes upstream. Although rain clouds occasionally threatened (early monsoon this year?), the only other drops we got on the trip were at the camp below Kanab Creek on Day 10.
Most of the rocks in Marble Canyon are pretty much horizontal, so when they look tilted it is either because they toppled, or because they were deposited as cross-beds in ancient dunes or rivers.
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