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Forbidden zone subduction of sediments to 150 km depth - the reaction of dolomite to magnesite + aragonite in the UHPM metapelites from western Tianshan, China

Zhang, Lifei; Ellis, David; Arculus, Richard; Jiang, Wenbo; Wei, C


The solid-state reaction magnesite (MgCO3) + calcite (aragonite) (CaCO3) = dolomite (CaMg(CO32) has been identified in metapelites from western Tianshan, China. Petrological studies show that two metamorphic stages are recorded in the metapelites: (1) the peak mineral assemblage of magnesite and calcite pseudomorphs after aragonite which is only preserved as inclusions within dolomite; and (2) the retrograde glaucophane-chloritoid facies mineral assemblage of glaucophane, chloritoid, dolomite,...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Journal of Metamorphic Geology
DOI: 10.1046/j.1525-1314.2003.00460.x


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