摘要
应用Ｒｂ－Ｓｒ同位素地质年代学方法，系统地研究了大别山东部两类不同构造环境（同构造花岗岩和非构造花岗岩）成因的花岗岩及大别杂岩混合二长片麻岩的冷却就位和构造－变质时代．结合区域上大别杂岩和花岗岩已有的同位素地质年代学成果分析，结果表明：（１）大别山东部燕山晚期区域变质－混合岩化－岩浆活动是同一构造－热事件的产物；（２）大别杂岩与中生代花岗岩具有相似的热历史。
Rb-Sr dating has been made for granites and migmatic gneiss from eastern Dabiecomplex,central China.These results and previous geochronologic evidences from Dabie area show that:(1)regional metamorphism-migmatism and granitic magmatism occurred contemporaneously due to same tectonothermal event in the area.(2) The thermal histories of Dabie complex and granites are similar,indicating the exhumation of Dabie terrane caused by rapid tectonic uplifting during Late Yanshanian episode.
出处
《地球科学（中国地质大学学报）》
CSCD
北大核心
1996年第5期519-523,共5页
Earth Science-Journal of China University of Geosciences
