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新疆焉耆盆地构造特征及其石油地质意义

石油实验地质

1998年 20卷第3期

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Title

THE STRUCTURAL STYLES AND THEIR ROLE IN HYDROCARBON ACCUMULATION OF THE YANQI BASIN, NW CHINA

作者

郭召杰张志诚钱祥麟李茂松

Authors

Guo Zhaojie Zhang Zhicheng Qian Xianglin Li Maosong

单位

北京大学地质学系, 北京 100871

Organization

Department of Geology, Peking University, Beijing 100871

摘要

新疆焉耆盆地是一个形成于南天山造山带基础之上的中生代拉分盆地。喜马拉雅造山事件以来,其南北两侧山体向盆地内对冲,形成典型前陆冲断褶皱构造,盆地内发育一系列台阶状断层及其断层相关褶皱。盆地两侧的对冲作用,使得盆地内侏罗系生油层得以进入生油成熟阶段。焉耆盆地构造演化特征表明,该盆地是一个有利含油气盆地。

Abstract

The Yanqi basin,which formed on the basis of South Tianshan orogenic belt in the Mesozoic,was a pull apart one.Since the Miocene Yanqi basin has been overthrusted from north by Tianshan belt and from south by Kuluktag belt because of the Himalayan orogenic event.The Yanqi basin is now one of foreland basins.A series of stepped thrusts and fault related folds occur in the Yanqi basin.The tectonic loadings resulted from the overthrusts induce source rocks of the Jurassic coalbeds and dark argillites to maturation period for hydrocarbon generation.We proposed that Yanqi basin is a favorable one for accumulation of oil and gas.

关键词：

焉耆盆地; 冲断构造; 台阶状断层; 油气聚集;

基金项目

国家攻关项目(85-101-01-01-05)资助

DOI

https://doi.org/10.11781/sysydz199803205