Woodson Debris Flow - Oregon Department of Geology and Mineral ...
Woodson Debris Flow - Oregon Department of Geology and Mineral ...
Woodson Debris Flow - Oregon Department of Geology and Mineral ...
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<strong>Geology</strong><br />
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The bedrock in the slopes above <strong>Woodson</strong> is relatively loose<br />
s<strong>and</strong>stone, which weathers to a s<strong>and</strong>.<br />
There are NO igneous rocks, which tend to weather to boulders.<br />
This is why the debris flow deposit at <strong>Woodson</strong> did not have big<br />
boulders like some other debris flow deposits in <strong>Oregon</strong>.<br />
The <strong>Woodson</strong> debris flow was composed <strong>of</strong> mostly water, s<strong>and</strong>,<br />
<strong>and</strong> woody debris.<br />
Example <strong>of</strong> a Boulder <strong>Debris</strong> <strong>Flow</strong><br />
(Mt. Hood, 2006)<br />
<strong>Woodson</strong> <strong>Debris</strong> <strong>Flow</strong><br />
with Only a Few Boulders<br />
Image credits: Bill Burns, 2006 <strong>and</strong> Scott Burns, 2007<br />
Burns, December 2007
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