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库车坳陷西段褶皱-冲断带前缘盐底辟构造特征及形成机制

吴珍云 尹宏伟 汪新 徐士进

南京大学学报(自然科学版)Issue(3):612-625,14.
南京大学学报(自然科学版)Issue(3):612-625,14.DOI:10.13232/j.cnki.jnju.2015.03.018

库车坳陷西段褶皱-冲断带前缘盐底辟构造特征及形成机制

The structural features and formation mechanism of exposed salt diapirs in the front of fold-thrust belt,Western Kuqa Depression

吴珍云 1尹宏伟 2汪新 1徐士进3

作者信息

  • 1. 南京大学地球科学与工程学院,南京,210023
  • 2. 江苏省地震局,南京,210014
  • 3. 浙江大学地球科学系,杭州,310027
  • 折叠

摘要

Abstract

Based on remote sensing image,field works,seismic profiles and physical modeling,the structural features and formation mechanism of three exposed salt diapirs in the fold-thrust frontal belt of Quele-Awate area,Western Kuqa depression have been researched.Research results show that the formation of the salt nappe in Quele(Awate) area,the salt diapirs in Wensu Saltern and Wensu Canyon was controlled by the width of the initial salt basin,the early passive salt diapir and the regional compression stress.The variable width of the salt basin has a major controlling influence on the differential structural deformation in different longitudinal segmentations from Quele area to Awate area in the western Kuqa depression.Also,the early passive salt diapir has an important controlling role on the subsequent compressional structural deformation.Model results demonstrate that the Quele-Awate salt nappe was the result of the subsequent compressional structural deformation of the early passive diapir in the basin. The salt diapirs in Wensu Saltern and Wensu Canyon were resulted from the erosion of salt anticlines in the margin of the salt basin.

关键词

库车坳陷/秋里塔格/盐构造/盐底辟/物理模拟

Key words

Kuqa depression/Qiulitage/salt structure/salt diapir/analogue modeling

分类

天文与地球科学

引用本文复制引用

吴珍云,尹宏伟,汪新,徐士进..库车坳陷西段褶皱-冲断带前缘盐底辟构造特征及形成机制[J].南京大学学报(自然科学版),2015,(3):612-625,14.

基金项目

国家自然科学基金(40872134,41272227,41372158),国家油气重大专项(2011ZX05029-001) (40872134,41272227,41372158)

南京大学学报(自然科学版)

OACSCDCSTPCD

0469-5097

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