论文详情

苏北新生代盆地断陷和坳陷的形成机理

石油实验地质

2001年 23卷第3期

阅读：130

查看详情

Title

FORMATION MECHANISM OF DEPRESSIONS AND RIFTS IN THE CENOZOIC BASIN OF NORTH JIANGSU PROVINCE

作者

练铭祥薛冰杨盛良

Authors

LIAN Mingxiang XUE Bing YANG Shengliang

单位

中国石化新星石油公司国际部, 北京 100083 2. 中国石化新星石油公司华东石油局规则设计研究院, 江苏南京 210034

Organization

International Department, Star Petroleum Company, SINOPEC, Beijing 100083, China 2. Research Institute of Petroleum, Star Petroleum Company, SINOPEC, Nanjing, Jiangsu 210034, China

摘要

苏北新生代盆地是由众多的断陷和坳陷组合而成的,它们发育在中、古生界逆冲推覆体上,其结构、规模和区域分布受逆冲推覆体的控制。断陷的形成是区域拉张背景下逆冲推覆带后缘断片回滑的结果,构成逆冲推覆体的“后缘凹陷”。苏北盆地不仅存在不同时期纵向上的断坳转化,而且在同一时期横向上兼有断、坳并存。

Abstract

The Cenozoic Basin in North Jiangsu province consists of numerous depressions and rifts which develop on the Meso-Paleozoic thrust nappe and whose structure,size and regional distribution are controlled by the thrust nappe.The formation of rifts is the result of faultshards on the backedge of the thrust nappe backgliding under the background of regional extension which forms the "backedge sags" of the thrust nappe.In the North Jiangsu Basin,not only longitudinal rift-depression transformation exists in different periods,but also rifts and depressions coexist laterally in the same period.

关键词：

断陷; 坳陷; 形成机理; 苏北盆地;

Keywords:

rifts; depressions; formation mechanism; the North Jiangsu Basin;

基金项目

DOI

https://doi.org/10.11781/sysydz200103256