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重力负载对库车褶皱冲断带盐构造的影响

程海艳 李江海

地质通报Issue(10):1502-1506,5.
地质通报Issue(10):1502-1506,5.

重力负载对库车褶皱冲断带盐构造的影响

The effect of gravitational load on salt tectonics of Kuqa Fold Thrust Belt, Northwest China

程海艳 1李江海2

作者信息

  • 1. 中国地质科学院地质力学研究所,北京100081
  • 2. 北京大学地球与空间科学学院,北京100871
  • 折叠

摘要

Abstract

Kumugeliemu Group and Jidike Formation with complex salt tectonics are well developed in Kuqa Fold Thrust Belt (KFTB). Gravitational loading has an important impact on their formation and development. In this paper, hydraulic head-gradient analysis was conducted to investigate the influence of gravity on salt tectonics in the Kuqa Fold Thrust Belt. Gravitational load in-cludes gravitational expansion and sedimentary load. Gravitational expansion is caused by the gravity of salt itself, while sedimentary load is formed by the gravity of the overlying sediments. Hydraulic head-gradient analysis shows that, where the salt elevation is high-er, the sedimentary load is much lower. Under the joint action of the two effects, salt gravitational expansion cannot happen in KFTB. Only the sediment differential load could cause the salt flow from the depocenter to its edge.

关键词

库车褶皱冲断带/重力负载/重力扩张/沉积差异负载/水压头

Key words

Kuqa Fold Thrust Belt/gravitational load/gravitational expansion/sedimentary load/hydraulic head-gradient

分类

天文与地球科学

引用本文复制引用

程海艳,李江海..重力负载对库车褶皱冲断带盐构造的影响[J].地质通报,2014,(10):1502-1506,5.

基金项目

中央级公益性科研院所基本科研业务费项目 ()

地质通报

OA北大核心CSCDCSTPCD

1671-2552

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