青藏高原羌塘盆地侏罗系沉积特征研究  

Research on Sedimentary Characteristics of Jurassic in Qiangtang Basin, Qingzang Plateau

作　　者：张忠民[1] 柳彬德[2] 周书欣[3] 

机构地区：[1]石油大学地球科学系,北京昌平102200 [2]东北大学秦皇岛分校地质系,河北秦皇岛066000 [3]大庆石油学院秦皇岛分院地质研究所,河北秦皇岛066000

出　　处：《世界地质》2000年第3期230-234,共5页World Geology

基　　金：中国石油天然气总公司重点科研项目!( 950 2 0 4 - 0 2 - 0 1)

摘　　要：羌塘盆地侏罗系为碳酸盐岩沉积和碎屑岩同时发育的混积型盆地 ,以碳酸盐岩沉积为主。古构造及构造事件对盆地的沉积演化起着决定性的控制作用。不同时期 ,盆地经历了四次海平面的升降变化 ,古气候、古水深、古生态也随之改变 ,各期沉积相呈继承性发育 ,在整个侏罗系沉积时期中央隆起始终为羌塘盆地的主要物源区。根据羌塘盆地侏罗系古地理特征及沉积演化模式 ,建立了适合于本区的侏罗系综合沉积模式。Jurassic is characterized by mixing of detrital rocks and carbonate rocks, and carbonate rocks are more than detrital rocks in Qiangtang basin. Structural events and tectonic movements controlled sedimentary evolution of the basin. Four times of great changes of sea level were undergone, and different sedimentary facies were developed with some similarities, and paleoclimate and paleoecology were changed in every period. The central uplift zone was always source area for Qiangtang basin in whole Jurassic. At last, according to the palaeogeography characteristic and sedimentary evolution model, the general sedimentary facies model of Jurassic in Qiangtang basin was founded.

关 键 词：侏罗系 羌塘盆地 沉积演化 古地理特征 

分 类 号：P534.52[天文地球—古生物学与地层学]