摘要
根据钻井层位标定、区域地震剖面解释追踪,侏罗系各组原始沉积厚图的变化特征,详细地圈定了车-莫古隆起不同时期的分布范围。结合构造演化史剖面、侏罗系各组残存地层展布特征、层系超覆、尖灭现象综合分析,将车-莫古隆起的演化划分为初始发育(J1s)、逐渐隆升(J2x)、强烈隆升(J2t)、剥蚀改造(J3)、隐伏埋藏(K-E)、调整定位(N-Q)6个阶段。卷入古隆起的断裂、褶皱组合关系表明车-莫古隆起的形成机制与其南、北缘两大右旋压扭性走滑断裂带成生演化相关。沙箱模拟实验证明车-莫古隆起是在NW300°斜向挤压应力作用下形成的。
The distribution of Che-Mo palaeo-uplift was delineated in detail according to the interpretation of regional seismic reflection profiles and well data. The tectonic evolution of Che-Mo palaeo-uplift can be divided into six stages, namely, initial development stage （J1s）, gradual uplift stage （J2x）, intense uplift stage （J2t）, denudation and alteration stage （J3）, embedding stage （K-E）, and adjustment and orientation stage （N-Q）. Based on tectonic evolution sections and facial belt distribution of Jurassic groups and truncations, the authors studied the relationship between faults and folds involved in the uplifting, which indicates that the mechanism of Che-Mo palaeo-uplift was related to the two dextral com- pression-shear fault-fold belts on the northern Tianshan range-front and Lunan uplift belt.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2008年第1期39-44,共6页
Acta Geoscientica Sinica
基金
中国石化西部新区勘探指挥部项目《准噶尔盆地构造演化、沉积储层与油气成藏和分布》(编号:XBKT2004KY10-031)资助
关键词
准噶尔盆地
车-莫古隆起
构造演化
成因模拟
Junggar Basin
Che-Mo palaeo-uplift
tectonic evolution
mechanism simulation
