不同期伸展断陷的叠合类型

现代地质 ›› 2011, Vol. 25 ›› Issue (5): 889-895.

不同期伸展断陷的叠合类型

陈发景¹, 汪新文², 陈昭年¹

1中国地质大学能源学院，北京100083；2中国地质大学地球科学与资源学院,北京100083

收稿日期:2011-02-27 修回日期:2011-03-30 出版日期:2011-10-26 发布日期:2011-11-03
作者简介:陈发景，男，教授，博士生导师，1927年出生，石油地质学专业，主要从事含油气盆地分析的研究及教学工作。 Email：cfj@cugb.edu.cn。

Superimposed Types of Extensional Fault Depressions at Different Epochs

CHEN Fa-Jing^-1, HONG Xin-Wen^-2 , CHEN Zhao-Nian^-1

1School of Energy Resources,China University of Geosciences,Beijing100083,China；
2School of Earth Sciences and Resources,China University of Geosciences,Beijing100083,China

Received:2011-02-27 Revised:2011-03-30 Online:2011-10-26 Published:2011-11-03

摘要/Abstract

摘要：

讨论3个问题：(1)不同期伸展断陷的叠合类型。按照断陷的叠合方式划分为孤立型、继承型和相干型。其中相干型根据不同期断陷的相干关系进一步划分为3个亚类，即同向相干型、对向相干型和相交相干型。(2)各相干型叠合的控制因素不同。同向和对向相干型叠合与先存基底断裂系统同向和对向排列以及断裂伸展活动时横向和纵向迁移有关；而相交相干型叠合与伸展方向的旋转有关。(3)油气分布与不同期断陷叠合类型有密切关系。一些类型，如继承型和对向相干型叠合有利于油气生成和保存，而同向和相交相干型叠合类型，因为早期断陷在晚期阶段部分上升并受到改造，一般起破坏作用。

关键词: 伸展断陷的叠合类型, 继承型叠合类型, 相干型叠合类型

Abstract:

Three problems are discussed in this paper. (1) Superimposed types of extensional fault depressions at different epochs. According to modes of superimposition, the types of superimposed fault depression can be classified as follows: isolate, inherited and interference types. Based on interference relationship between early and late fault depressions, the interference types can be subdivided further into three subtypes: synthetic, convergent and intersecting interference. (2) Formation mechanism of these interference types is controlled by following factors. The synthetic and convergent interference types are related with arrangement of synthetic and convergent preexistent basement faults and longitudinal or transverse migration of fault activity, whereas the intersecting interference type is related with rotation of extensional direction with time. (3) Hydrocarbon occurrence is related with various superimposed types of the fault depressions. Some types, such as inherited and convergent interference type are in favor of generation and preservation of oil and gas, whereas synthetic and intersecting interference type played a destructive role in general, because early depression was partly uplifted and modified by development of late depression.

Key words: superimposed type of fault depression, type of inherited superimposition, type of interference superimposition

陈发景, 汪新文 , 陈昭年. 不同期伸展断陷的叠合类型[J]. 现代地质, 2011, 25(5): 889-895.

CHEN Fa-Jing, HONG Xin-Wen- , CHEN Zhao-Nian. Superimposed Types of Extensional Fault Depressions at Different Epochs[J]. Geoscience, 2011, 25(5): 889-895.