天山南缘逆冲构造初探

邵鸿良; 易荣龙; 林宗满

doi:10.11743/ogg19900405

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专辑

天山南缘逆冲构造初探
PRELIMINARY APPROACH ON THRUST TECTONICS IN SOUTH MARGIN OF TIANSHAN MOUNTAINS
1990年11卷第4期页码：393-401
网络首发：1990-12-25，

纸质出版：1990
DOI： 10.11743/ogg19900405
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邵鸿良, 易荣龙, 林宗满. 天山南缘逆冲构造初探[J]. 石油与天然气地质, 1990,11(4):393-401. DOI： 10.11743/ogg19900405.

Shao Hongliang, Yi Ronglong, Lin Zongman. PRELIMINARY APPROACH ON THRUST TECTONICS IN SOUTH MARGIN OF TIANSHAN MOUNTAINS[J]. 1990, 11(4): 393-401. DOI： 10.11743/ogg19900405.

摘要

该构造在区域上受控于南北向水平挤压应力场。逆冲断裂在横向剪应力作用下

宏观上呈现为扇形或倒扇形构造的特点。其时空特征为:自北而南依次展布着海西期逆冲断裂、印支—燕山期叠瓦构造和喜马拉雅期推覆构造

后期对前期构造既叠加又改造。

Abstract

The thrust tectonic belts in the south margin of the Tianshan Mountains were region-ally controlled by N-S horizontal compressing stress field

thus forming E-W stretching fold-faulted tectonics.Those are macroscopically characterized by fan or reverse fan shapes.The belts could be divided into three kinds:1.thrusts mainly formed in Hercynian and distributed in the south flank of the Halicktao anticlinorium;2.imbricate tectonics formed in Indosinian-Yenshan Epoch and distributed in the fore part of south Tianshan;3.nappe tectonics characterized by thrusting up to several kilometres along sliding planesat low angles

developed in Himalayan Epoch and distributed in foreland depressions and the neighbouring inter montane basins.It is a intensive reformation to the thrust tectonics of the Hercynian and Indosinian-Yenshan Epoches.