生长地层及其在判断天山北缘前陆冲断褶皱带形成时间上的应用

郭召杰; 方世虎; 张锐; 张志诚; 吴朝东; 邵奎政

doi:10.11743/ogg20060406

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生长地层及其在判断天山北缘前陆冲断褶皱带形成时间上的应用
Growth strata and their application in timing deformation of foreland thrust-fold belts in the north margin of Tianshan
2006年27卷第4期页码：475-481
网络首发：2006-08-25，

纸质出版：2006
DOI： 10.11743/ogg20060406
稿件说明：

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郭召杰, 方世虎, 张锐, 等. 生长地层及其在判断天山北缘前陆冲断褶皱带形成时间上的应用[J]. 石油与天然气地质, 2006,27(4):475-481. DOI： 10.11743/ogg20060406.

郭召杰, 方世虎, 张锐, et al. Growth strata and their application in timing deformation of foreland thrust-fold belts in the north margin of Tianshan[J]. 2006, 27(4): 475-481. DOI： 10.11743/ogg20060406.

摘要

新生代以来天山北缘前陆冲断褶皱带自南向北可分为山麓冲断褶皱带、霍尔果斯-玛纳斯-吐谷鲁冲断褶皱带、独山子-安集海冲断褶皱带3排构造带。在野外观察的基础上

结合地震剖面分析

确定了各排构造带生长地层发育层序;结合裂变径迹年龄证据

并根据现有磁性地层等年代学资料

确定了天山北缘晚新生代构造变形时间序列:第一排构造带形成于距今10 Ma以来;第二排构造带形成于距今7～2.58 Ma以来;第三排构造带形成于距今大约0.73 Ma后。

Abstract

Three foreland thrust-fold belts

the Piedmont

the Huoerguosi-ManasiTugulu

and the Dushanzi-Anjihai

formed since the Cenozoic are recognized from south to north in the north margin of Tianshan.The sequences of growth strata developed in each belt have been established based on field observation and seismic interpretations.The fission-track dating evidences and available magnetostratigraphic data are also used in the timing of the Late Cenozoic tectonic deformation: the Piedmont formed since about 10 Ma;the Huoerguosi-Manasi-Tugulu formed from 7 to 2.58 Ma;and the Dushanzi-Anjihai formed after about 0.73 Ma.