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greenschist facies
(redirected from Greenschist)

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greenschist facies

One of the major divisions of the mineral facies classification of metamorphic rocks, encompassing the rocks that formed under fairly low temperatures (480–660 °F, or 250–350 °C) and pressure conditions and usually produced by regional metamorphism. The minerals commonly found in such rocks include quartz, orthoclase, muscovite, chlorite, serpentine, talc, and epidote; carbonate minerals and amphibole (actinolite) may also be present.



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hosted by monotonous sequences of clastic rocks intruded by gabbroic to granitic plutons, and metamorphosed to at least the greenschist fades.
Great mining camps of Canada 1. The history and geology of the Keno ... by Cathro, R.J. / Geoscience Canada
The supracrustal rocks are generally metamorphosed to amphibolite facies, less commonly to granulite facies, and rarely to greenschist facies.
Government geoscience stimulates mineral exploration in the superior ... by Simard, Martin / Geoscience Canada
The stratigraphic sequence is a biotite-rich turbidite metamorphosed to upper greenschist facies.
North Atlantic Resources Ltd. First Five Diamond Drill Holes ... by Business Wire
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