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Regional Hypersthene Zone (Granolite High-Grade)

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Petrogenesis of Metamorphic Rocks

Part of the book series: Springer Study Edition ((SSE))

Abstract

As pointed out in Chapter 7 (p. 88f), a distinction must be made in high-grade metamorphism between two situations: (1) water pressure being approximately equal to load pressure, or (2) considerably less than load pressure. in the latter case and at medium to high load pressure, rocks called granulites are formed (the granulite facies is developed). Since hypersthene is the most diagnostic mineral in both mafic and acidic granulites, it is suggested that granulite high-grade metamorphism be designated as the “regional hypersthene zone.” This is in contrast to the low pressure, contact metamorphic high-grade zone, where ortho-pyroxene is also present in rocks of appropriate composition.

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© 1979 Springer Science+Business Media New York

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Winkler, H.G.F. (1979). Regional Hypersthene Zone (Granolite High-Grade). In: Petrogenesis of Metamorphic Rocks. Springer Study Edition. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-4215-2_16

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  • DOI: https://doi.org/10.1007/978-1-4757-4215-2_16

  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-0-387-90413-9

  • Online ISBN: 978-1-4757-4215-2

  • eBook Packages: Springer Book Archive

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