松潘-甘孜造山带西部碰撞结合带古生代裂解史初探  

Preliminary Study of Breakup Process of the Plate Junction in the West Songpan-Ganzi Orogenic Zone during the Paleozoic

作　　者：戴宗明[1,2] 孙传敏[2] 

机构地区：[1]四川省地矿局区域地质调查队,四川双流610213 [2]成都理工大学地球科学院,成都610059

出　　处：《四川地质学报》2009年第S2期1-7,共7页Acta Geologica Sichuan

基　　金：中国地质调查局<1:25万新龙县幅区域地质调查>项目(编号200112000003)成果之一

摘　　要：通过对近年的区域地质调查成果总结,认为松潘-甘孜造山带西部碰撞结合带在古生代经历了三个重要的发展时期:早古生代先后形成金沙江裂陷槽和理塘裂陷槽;晚古生代中晚期形成金沙江洋和理塘裂谷;晚古代生代末期至中三叠世早期,金沙江洋关闭,理塘洋形成,二者是相互关联的。The recent regional geological survey indicates that the plate junction in the west Songpan-Garzê Orogenic Zone during the Paleozoic underwent 3 phases: the formation of the Jinshajiang and Litang aulacogens during the Early Paleozoic,opening of the Jinshajiang Ocean and the Litang rift in the middle and late of the Late Paleozoic and closure of the Jinshajiang Ocean and opening of the Litang Ocean at the end of the late Paleozoic to the early of the Middle Triassic.

关 键 词：松潘-甘孜 古生代 结合带 裂陷槽 

分 类 号：P542[天文地球—构造地质学]