阿尔金盆地群构造类型与演化  

Structural Style and Tectonic Evolution of the Basins in the Altun Region

作　　者：郭召杰[1] 张志诚[1] 

机构地区：[1]北京大学地质学系,100871

出　　处：《地质论评》1998年第4期357-364,共8页Geological Review

摘　　要：阿尔金走滑断裂带主要由阿尔金主干断层与几条近于平行的左行走滑断层和斜交断层组成,其空间分布规律可用左行走滑简单剪切模型解释。在阿尔金盆地群中,索尔库里盆地是新生代与阿尔金走滑断裂活动相关的新生盆地,其它盆地主要是受阿尔金断裂走滑作用改造的中生代张性断陷盆地。在分析阿尔金盆地群的石油地质特征基础之上,本文认为吐拉盆地和敦煌盆地的阿克塞坳陷是有利的含油气地区。The Altun fault, a famous tremendous sinistral strike-slip fault in NW China, is composed mainly of the Altun,master fault several secondary subhorizontal, sinistral, strike-slip faults and oblique faults. The relationship between master and secondary structures may be explained by a simple shear model based on the concept of 'Riedel flaking'. There are several basins in the Altun region. The Xorkol basin is one of the typical Cenozoic strike-slip pull-apart basins related to strike-slip faulting in the Altun region. Other basins, such as the Tula Basin and Dunhuang Basin, were Jurassic half graben-like extensiotial basins, and now are transpressional basins resulting from reworking of the strike-slip of the Altun fault. On the basis of a petroleum geological analyses, this paper proposes that the Tula basin and Dunhuang basin (especially in the Aksay depression ) are favorable for hydrocarbon exploration.

关 键 词：阿尔金断裂带 走滑作用 盆地构造 油气意义 

分 类 号：P542.3[天文地球—构造地质学] P618.130.2[天文地球—地质学]