Friday, November 28, 2014

Geo 730: November 28, Day 697: Hood River Rubble

I was not able to get a good, clear photo of the lahar deposits around the river at this stop, but this is the best of them. In the little slice of whitewater right near the center of the shot, you can see some of the rounded boulders that characterize much of the upper stretch of this river. And though it's over exposed, you can see more of the poorly sorted and essentially un-bedded deposits on the far bank. Near the top, it looks as if we're seeing a talus pile from a still higher (though not necessarily younger) lava flow, based on the angular, un-transported nature of the rock, and the consistency of color and apparent composition.

Photo unmodified. October 10, 2012. FlashEarth Location (possibly maybe).

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