MetaGlossary.com: Blueschist

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Keywords: Glaucophane, Metamorphic, Kyanite, Amphibole, Subduction

Related Terms: Aragonite, Argillaceous, Argillite, Arkose, Calcite, Chert, Coquina, Dolomite, Dolostone, Foliation, Gneiss, Granulite, Graywacke, Limestone, Marble, Metamorphic, Metamorphism, Phosphorite, Quartzite, Rock, Sandstone, Schist, Shale, Travertine, Tufa, Siltstone, Hornfels, Oolite, Oolitic, Hydrothermal Deposit, Metamorphic Rock, Carbonate Rock, Saprolite, Metasediment, Migmatite, Mudstone, Ooid, Micrite, Porphyroblast, Dolomitic Limestone, Speleothem, Oolitic Limestone, Retrograde Metamorphism, Mylonite, Calcarenite, Calcrete, Metamorphic Rocks, Claystone, Greywacke, Schists

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a high pressure, low temperature metamorphic rock characteristic of subduction zones.

http://ruby.colorado.edu/~smyth/G101glos.html

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A low temperature, high pressure regionally metamorphic rock, containing abundant glaucophane. .... More

http://www.geologyrocks.co.uk/glossary.php?cat=metamorphic

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metamorphic rock formed under conditions of high pressure (in excess of 5000 bars) and relatively low temperature, often containing the blue minerals glaucophane (an amphibole) and kyanite.

http://www.whfreeman.com/presssiever/content/glossary/glossaryB.html

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Metamorphic rock formed under great pressures, but not so great temperatures.

http://www.ucmp.berkeley.edu/glossary/gloss2geol.html

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Blueschist (IPA: ) is a rock that forms by the metamorphism of basalt and rocks with similar composition at high pressures and low temperatures, approximately corresponding to a depth of 15 to 30 kilometers and 200 to ~500 degrees Celsius. The blue color of the rock comes from the presence of the mineral glaucophane.

http://en.wikipedia.org/wiki/Blueschist

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