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Tupper Rock, Bandon, Coos Co., Oregon, USA
An elevated sea stack that was leveled by quarrying and no longer exists, with the site covered by a retirement home. Late Jurassic blueschist was obtained there and used to construct the Coquille River Jetty in Bandon, where samples can be seen (but not collected). The blueschist was part of a tectonic mélange formed in subduction zone, and metamorphosed under high-pressure, low-temperature conditions.
Mineral List
| 'Actinolite-Tremolite Series' 'Feldspar Group' | 'Garnet' Glaucophane Group | Muscovite Pyrite |
6 entries listed. 3 valid minerals.
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References
Alt, D., and Hyndman, D., 1978, Roadside Geology of Oregon: Missoula, Mountain Press. (See p. 97-98 for blueschist at Bandon jetty.)
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Locality Updated: Spray mine, Zeehan, Zeehan district, Tasmania, AustraliaFrom Rod Martin, 19th May 2013 09:41:10