西武夷地区加里东期花岗岩与造山过程  

Caledonian granite in the western Wuyi area and inversion of the orogenic process

作　　者：曾勇[1,2] 廖群安[3] 

机构地区：[1]江西省地质矿产厅 [2]中国地质大学,湖北武汉430074 [3]中国地质大学

出　　处：《中国区域地质》2000年第4期344-349,共6页Regional Geology of China

摘　　要：将西武夷地区的加里东花岗岩划分为早奥陶世麻姑山超单元、中晚奥陶世付坊超单元、中晚志留世棠阴超单元和晚志留世鹅婆超单元 ,它们构成武夷山超单元组合 (序列 )。分别与剪切深熔作用有关的花岗质片麻岩、俯冲熔融作用的浅色花岗岩、伸展热隆作用的混合花岗岩和走滑作用的正长花岗岩 ,产生于加里东造山旋回的碰撞前期—主碰撞期—主碰撞后—同碰撞的后期。由此反演出区内的加里东造山作用过程是早期挤压—主期挤压—有限伸展—区域走滑的 4阶段模式。Caledonian granite in the western Wuyi area is divided into the Early Ordovician Magushan superunit, Middle Late Orodvician Fufang superunit, Middle Late Silurian Tangyin superunit and Late Silurian Epo superunit. The Wuyishan superunit association (sequence) made up of the above mentioned superunits occurred with shear anatexis related granitic gneiss, subduction fusion related leucogranite, extensional thermal uplift related migmatitic granite and strike slip related syenogranite respectively in the early collision stage, main collision stage, post main collision stage and syncollision stage in the Caledonian orogenic cycle. The Caledonian orogenic process of the area deduced backward thus may be expressed by a four stage model of early stage compression main stage compression finite extension regional strike slip.

关 键 词：加里东湖 花岗岩 造山过程 武夷山 构造岩浆作用 

分 类 号：P588.121[天文地球—岩石学] P542.2[天文地球—地质学]