四川甘孜生康剪切混杂岩带物质组成、变形特征及演化历史

COMPOSITION, DEFORMATION AND EVOLUTIONARY HISTORYOF SNKAR SHEAR MELANGE ZONE,GAEZ,SICHUAN

甘孜生康剪切混杂岩带，它初始发育在陆棚与大陆基之间，是“再生”小洋盆关闭、俯冲－碰撞乃至斜冲剪切、左行走滑综合作用的产物。带内由不同岩性，不同层位，不同时代的构造岩块与遭受强烈剪切变形的粉砂岩、板岩“基质”组合而成。宏观上，无层无序，块体内有序，是造山带特有的非史密斯地层体。

Sênkar shear melange zone,Garzê was developed between continental shelf and continental rise and resulted from closure of“regenerated”small oceanic basin,subductioncollision,shearing and sinistral strike slipping,The melange zone consists of various tectonic blocks diffeerent in lithology,hozizon and age,and siltstones and slates characterized by strong shear deformationThe blocks are characterized by nonsmith stratigraphy