桐柏-大别山高压超高压变质带  

High-Pressure and Very High-Pressure Metamorphic Belt of Tongbai-Dabie Area, Central China

作　　者：张泽明[1] 游振东[1] 韩郁菁[1] 

机构地区：[1]中国地质大学地质系,武汉430074

出　　处：《地球科学（中国地质大学学报）》1994年第1期1-7,共7页Earth Science-Journal of China University of Geosciences

基　　金：国家自然科学基金资助项目

摘　　要：桐柏—大别山高压超高压变质带自南向北可划分为3个带:绿帘—蓝片岩相变质带,高压榴辉岩相变质带和超高压榴辉岩相变质带。超高压变质带形成于加里东期洋壳俯冲作用过程中,而前两个高压变质带则是印支期陆—陆俯冲—碰撞作用的产物。High-pressure and very high-pressure metamorphic rocks in Tongbai-Dabie area may be classi-f ied into three belts f rom south to north; the epidote-blueschist facies, high-pressure eclogite facies and very high-pressure eclogite facies belts. The latter was formed by subduction of oceanic crust north-ward beneath the North China plate or the Dabie micro-plate during the Caledonian orogeny. The for-mer two were formed by subduction-collision between the North China plate and Yangtze plate in Tri-assic time. At least two times of high- pressure metamorphism occurred in the Tongbai-Dabie orogen.

关 键 词：变质带 榴辉岩 蓝片岩 桐柏-大别山 

分 类 号：P588.3[天文地球—岩石学]