Quartz, mica, and amphibole exsolution from majoritic garnet reveals ultra-deep sediment subduction, Appalachian orogen
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DOI: 10.1126/sciadv.aay5178
Abstract: Garnet textures and chemistry identify ultrahigh-pressure metasedimentary rocks. Diamond and coesite are classic indicators of ultrahigh-pressure (UHP; ≥100-kilometer depth) metamorphism, but they readily recrystallize during exhumation. Crystallographically oriented pyroxene and amphibole exsolution lamellae in garnet… read more here.
Keywords: appalachian orogen; majoritic garnet; amphibole exsolution; quartz mica ... See more keywords