甘孜—理塘结合带中段蛇绿岩中石榴硅镁石角闪片岩首次发现及地质意义  

Discovery of Garnet-humite-hornblende Schist in Ophiolite Suite and its Geological Significance in the Garzê-Litang Suture Zone

作　　者：魏永峰[1] 罗森林[1] 周幼云[1] 勾永东[1] 朱世华[1] 

机构地区：[1]四川省地质调查院区域地质调查所,四川双流610213

出　　处：《四川地质学报》2004年第1期1-3,共3页Acta Geologica Sichuan

摘　　要：1∶5万理塘县、濯桑幅区调中首次在甘改—理塘结合带中段蛇绿岩中发现具有韧塑性变形变质产物的石榴硅镁石角闪片岩。该岩石的存在肯定了甘孜—理塘带的洋壳属性的同时 ,亦表明结合带中存在中温高压变质相系 。Garnet-humite-hornblende schist is discovered in ophiolite suite in the Garzê-Litang suture zone by 1:50,000 regional geological survey in the Litang and Cogsum quadrangles. The schist is characterized by plastic deformation and metamorphism.This discovery gives a new evidence for oceanic crustal property of the Garzê-Litang suture zone.

关 键 词：蛇绿岩 石榴硅镁石角闪片岩 洋壳属性 甘孜-理塘结合带 

分 类 号：P588.33[天文地球—岩石学]