狮泉河蛇绿混杂岩的非史密斯解析  

THE NON-SMITH ANALYSIS ON THE OP-MELANGE IN SHIQUANHE

作　　者：何来信 

机构地区：[1]甘肃省地矿局第三地勘院,甘肃兰州730050

出　　处：《甘肃地质学报》2003年第2期12-17,共6页Acta Geologica Gansu

摘　　要：从非史密斯地层学关于构造岩片的体制观与方法论出发,狮泉河蛇绿混杂岩带可解析为蛇绿岩岩片、硅质岩岩片、复理石岩片、礁灰岩岩片、火山岩岩片、碳酸盐岩片等多个构造岩片类型,基于岩石学与岩石地球化学研究及原始环境恢复和大地构造相划分认为,狮泉河蛇绿混杂岩带代表了一个多岛弧盆体系,其格架类似于太平洋西岸。According to the principles of non-smith strata,Shiquanhe op-melange zone can be distinguished into 6 types of tectonic blocks,they are,ophiolite,siliceous rock,reef limestone,flysch,volcanic rock and carbanate rock blocks.On the basis of study about their petrology and geochemical characteristics with distinguishing in tectonic facies,Shiquanhe op-melange zone is considered to represent a multi-island arc-basin system,and the system′s tectonic frame is similiar to that of the west shore of Pacific Ocean.

关 键 词：狮泉河蛇绿混杂岩 非史密斯地层 构造岩片 大地构造相 

分 类 号：P542[天文地球—构造地质学]