Forbidden zone subduction of sediments to 150 km depth - the reaction of dolomite to magnesite + aragonite in the UHPM metapelites from western Tianshan, China
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]
|Collections||ANU Research Publications|
|Source:||Journal of Metamorphic Geology|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.