四川石棉草科穹状变形变质体研究  

STUDY OF THE CAOKE DOMAL DEFORMATIONAL METAMORPHIC TERRANE IN SHIMIAN,SICHUAN

作　　者：郭建强[1] 喻安光[1] 游再平[1] 杨军[1] 

机构地区：[1]四川地勘局区调队

出　　处：《四川地质学报》1998年第4期2-8,共7页Acta Geologica Sichuan

摘　　要：位于扬子陆块西缘的石棉草科穹状变形变质体，经历了三次变形变质时期：早期为收缩滑脱变形的区域动力变质、中期热隆伸展动热变质和后期岩浆热接触变质。对主期变质进行了划分，利用变质反应、矿物地质温压计及相关的同位素年龄资料，建立了草科穹状变形变质体演化的ＰＴｔＤ轨迹。The Caoke domal deformational metamorphic terrane in Shimian is located on the western margin of the Yangtze block It underwent three deformational and metamorphic stages,i e early compression detachment deformation and regional dynamometamorphism,middle thermal dome extension and dynamothermal metamorphism and late magmatic thermal contact metamorphism Metamorphic reactions,mineral geothermobarometer and relative isotopic age data are used for reconstruction of P T t D path of the Caoke domal deformational metamophic terrane

关 键 词：穹状变形变质体 P-T-t-D轨迹 岩浆热动力 变质 岩浆核杂岩 

分 类 号：P588.33[天文地球—岩石学]