松辽盆地北部深部地壳结构及盆地成因机制  

Crustal Structure beneath Northern Songliao Basin and Songliao Basin Genesis Mechanism

作　　者：高君[1] 李占林[2] 李勤学[2] 

机构地区：[1]长春科技大学,吉林长春130026 [2]大庆石油管理局地球物理勘探公司,黑龙江大庆163357

出　　处：《大庆石油地质与开发》2002年第1期20-22,共3页Petroleum Geology & Oilfield Development in Daqing

摘　　要：根据松深大剖面地震反射结构及大地电磁测深资料 ,结合当前国际上对地壳结构的研究成果 ,将松辽盆地 (北部 )的地壳分为上、下 2个部分。分析认为 ,上地壳上部呈现脆性 ,下部为脆 韧性过渡状态 ,主要发育有板状断层或犁式断层 ;下地壳总体呈现韧性变形特征 ,发育有近水平的韧性剪切带 ,由此认为松辽盆地主要是由拉张作用形成的。此次深部综合地质研究所获得的资料 ,是建立松辽盆地形成。Based on seismic reflection structural characteristics interpreted from deep seismic profiling lines transversed the northern Songliao Basin and MT sounding data and on the conclusions drawn by other authors studying the crustal structure, it is thought that the crust for Songliao Basin can be divided into the upper and the lower part. From analysis,it is concluded that the upper part of the upper crust is brittle and the lower part is tenacity and deformed with the development of a shear zone. Therefore, it is concluded that the basin was formed by stretching. The results from the deep integrated geologic study played a very important role in establishing Songliao Basin evolution.

关 键 词：地壳 构造作用 韧性剪切带 成因机制 拉张作用 松辽盆地 

分 类 号：P544.4[天文地球—构造地质学] P542.5[天文地球—地质学]