塔里木盆地北部三叠－侏罗系砂岩碎屑组分与板块构造位置关系的研究  

TRIASSIC-JURASSIC SANDSTONE FRAGMEMT COMPONENTS RELATED WITH PLATE TECTONIC POSITION IN THE NORTHERN TARIM BASIN

作　　者：张希明 刘青芳 王贵全 

机构地区：[1]西北石油局地质综合研究大队

出　　处：《新疆地质》1995年第3期251-255,共5页Xinjiang Geology

摘　　要：近年来，“碎屑模型”和“颗粒指数”概念的提出使得砂岩碎屑组分的研究进入了宏观地质学的实用领域。碎屑组分－物源区类型－板块构造背景研究已构成有机的整体，成为沉积学与板块构造学紧密联系的纽带之一。笔者几年来系统观察研究了大量的地表和钻井剖面的砂岩薄片，统计分析了三叠－侏罗系砂岩碎屑组分特征，在此基础上进行了碎屑模型的图解研究，结合区域地质特征，对图中反映的物源区类型和板块构造背景进行了分析。通过分析认为：本区北部的库车坳陷属前陆盆地，南部的阿瓦提－满加尔坳陷为克拉通内坳陷盆地。The concept of 'Fragment Modem' and 'Grain Index' recently put forward made the study of sandstone fragment components into practical field of macro- geology. The study of fragment component types of material source area and plate tectonic setting has been an organic whole.It has been one of the close links of sedimentology and plate tectonics. Based on systematic examination of lots of sandstone thin sections at the surface or logging profile, and statistical analysis of Triassic-Jurassic sandstone fragment components, the illustration research of fragment model was conducted. Coupled with regional geological characters,the material source area type-plate tectonic setting reflected in the illustration were analyzed. The analysis shows the Kuqa depression to the north of study area belongs to foreland basin, and Await-Manjiar depression to the south is an intra - craton basin.

关 键 词：塔里木盆地 碎屑组分 板块构造 沉积盆地 

分 类 号：P542[天文地球—构造地质学]