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Two types of Precambrian high‐grade metamorphism, Inner Mongolia, China
Author(s) -
XISHAN LIU,
WEI JIN,
SHUXUN LI,
XUECHUN XU
Publication year - 1993
Publication title -
journal of metamorphic geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.639
H-Index - 114
eISSN - 1525-1314
pISSN - 0263-4929
DOI - 10.1111/j.1525-1314.1993.tb00167.x
Subject(s) - metamorphism , proterozoic , geology , granulite , geothermobarometry , archean , geochemistry , metamorphic rock , precambrian , metamorphic facies , petrology , supercontinent , facies , craton , tectonics , geomorphology , paleontology , structural basin
Archaean and Proterozoic granulite facies complexes of Inner Mongolia differ in lithological association, tectonic style, mineral assemblage and metamorphic P–T path. A nearly isobaric cooling path for Archaean high‐grade metamorphic rocks is suggested by reaction textures and geothermobarometry. Early Proterozoic metamorphic rocks show nearly isothermal decompression. Archaean metamorphism may have been caused by magmatic accretion, whereas early Proterozoic metamorphism suggests a major continental thickening event followed by exhumation.