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Map - Oregon Obsidian Sources
Robert Koscik
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Trail Maintenance
06/16/2014 - 5:03 pm
Member Since: 09/20/2009
Forum Posts: 314
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Interesting map from the Obsidian Studies Laboratory.  There are apparently a couple of sources in the Clackamas, I'm surprised thought it was mostly basalt.

http://www.obsidianlab.com/ima.....n_map1.pdf

BrianEdwards
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Trail Maintenance
06/16/2014 - 5:21 pm
Member Since: 03/17/2010
Forum Posts: 318
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Rho Ridge and Lemiti Creek obsidian eh? Got a new reason to go explore that area in the future. 

Donovan
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06/16/2014 - 7:16 pm
Member Since: 09/20/2009
Forum Posts: 714
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What's the Clackamas River doing up in Hood River County?

Map seems off. Or needs explanation.

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