论文详情

箕状凹陷坡折带成因及对同生断层和沉积的控制,以南襄盆地南阳凹陷为例

石油实验地质

2006年 28卷第5期

阅读：115

Title

FORMING MECHANISM OF SLOPE-BREAK AND ITS CONTROL ON SYN-DEPOSITIONAL FAULT AND DEPOSITION IN HALFGRABEN SAG—A CASE STUDY OF THE NANGYANG SAG, THE NANXIANG BASIN

作者

付志方汤达祯许浩杨芳

Authors

Fu Zhifang Tang Dazhen Xu Hao Yang Fang

单位

中国地质大学, 北京, 100083

Organization

China University of Geosciences, Beijing 100083, China

摘要

坡折带是沉积地貌突变的古构造枢纽带。南襄盆地南阳凹陷南部控凹铲状正断层在非平面上滑动造成凹陷北部盖层缓坡弯折,构成盆内沉积区域的分界线,是同生断层集中发育和沉积相发生突变的地带。特定的坡折带类型揭示了同沉积断裂的活动和分布特征,制约着沉积物的分散过程和砂体堆积。在不同的盆地演化阶段,同生断层与沉积相带控制着不同圈闭类型的形成。

Abstract

The slope-break zone is a pivotal zone of depositional physiognomy.The listric normal faults in the south of Nanyang Sag glide on lumpy surface and result in the gentle wrenches of cap formation in the north,serving as the boundary between depositional regions.Syn-depositional faults and sedimentary facies changes mainly take place here.Certain slope-break zone types indicate the activities and distributions of syn-depositional faults and control sediment dispersal and sand body accumulation.During different stages of basin evolution,syn-depositional faults and sedimentary facies belts control the gene-ration of different traps.

关键词：

同生断层; 沉积; 坡折带; 箕状凹陷; 南阳凹陷; 南襄盆地;

Keywords:

syn-depositional fault; deposition; slope-break zone; halfgraben sag; the Nanyang Sag; the Nanxiang Basin;

基金项目

中国石油化工股份有限公司科技攻关项目(P02015).

DOI

https://doi.org/10.11781/sysydz200605430