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Andrew Alden

Andrew's Geology Blog

By Andrew Alden, About.com Guide to Geology

Shell Beach

Thursday October 9, 2008
shell beach blueschistI've put up a photo tour of Shell Beach, on the California coast. It's no ordinary beach, although the tide pools and fishing are supposed to be good. I was there because it's a superb place to observe the rocks and setting of a subduction zone. Everything is there, from high-pressure eclogite to the rarely seen shaly matrix that polishes everything else in the mélange like lapidary rouge or an umpire rubbing a baseball with mud.

Mammoth Rocks blueschist — Geology Guide photo

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