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You are browsing the archive for 2015 June 12.

12 June 2015

Friday fold: Flow banding in obsidian, Newberry Volcano National Monument, Oregon

Lockwood Dewitt is the purveyor of this week’s Friday fold ensemble: All these folds are primary (not tectonic) in nature: they are flow banding of the viscous lava that oozed out to make the Big Obsidian Flow at Newberry. And closer in: One more: Awesome stuff! Thanks for sharing, Lockwood! Happy Friday, everyone!

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