Mineralogical evidence for alteration of ultramafic and mafic rocks by a saline-rich fluid prior to UHP metamorphism at Shenglikou in the northern Qaidam Mountains, NW China

摘要：

The orogenic gamet peridotites at Shenglikou in the northem Qaidam mountains, NW China, were earlier shown to have experienced serpentinization prior to the UHP metamorphism, based on the occurrence of Cl-rich lizardite, brittle mica, Mg-Fe amphibole, actinolite, chlorite, spinel + orthopyroxene symplectite, and calcite in the high-pressure minerals. It was proposed that the peridotite was once serpentinized by brine (sea water) before the UHP metamorphism. The present study investigates a samples of gamet pyroxene rocks (gamet + orthopyroxene +clinopyroxene) and some garnet therzolites.

作者: Kosuke Naemura Jian-Jun Yang

作者单位: Institute of Geology & Geophysics, Chinese Academy of Sciences

会议类型: 国内会议

会议名称: 2011年全国岩石学与地球动力学研讨会

会议地点: 西安

会议语种:英文

页码: 200-201

在线出版日期: 1900-01-01（万方平台首次上网日期，不代表论文的发表时间）