塔里木盆地巴楚—麦盖提地区古构造研究  

Palaeotectonic analysis in Bachu-Markit Area,Tarim Basin

作　　者：吴礼明[1] 丁文龙[1] 赵松[1] 曾维特[1] 游声刚[1] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083

出　　处：《断块油气田》2012年第1期6-11,共6页Fault-Block Oil & Gas Field

基　　金：国家自然科学基金"中国南方下古生界海相富有机质页岩裂缝发育程度与主控因素定量关系研究"(41072098);国家科技重大专项"中东中亚区域构造与主要含油气组合分布特征"(2008ZX05031)资助

摘　　要：随着塔里木盆地巴楚—麦盖提地区(巴—麦地区)油气勘探的深入,古构造演化研究对指导该地区油气勘探起着越来越重要的作用。以现今构造为基础,采用逐层回剥和平衡剖面原理恢复地层剥蚀厚度和古埋深,同时考虑压实校正影响来分析巴楚—麦盖提地区古构造演化。结果表明,巴楚—麦盖提地区自震旦纪以来,经历了加里东构造旋回、海西构造旋回、燕山构造旋回和喜马拉雅构造旋回等多期构造运动,构造格局发生多次调整。具体表现为:加里东期早期—中期,巴—麦地区为"北东低,西南高"构造格局;加里东晚期,调整为"北高,南低"的构造格局;海西期,巴楚地区为"北高,南低",麦盖提地区则为"南高,北低"的构造格局;喜山期,麦盖提地区翘倾,正式转变为斜坡,同时巴楚地区隆升更为强烈,形成了"巴楚隆起,麦盖提斜坡"的现今构造格局。The research of palaeotectonic evolution plays a significant role in the oil and gas exploration in Bachu-Markit Area, Tarim Basin. On the basis of current tectonic, the paleoburial depth of the strata and the erosion thickness of strata are restored and used to analyze the palaeotectonic evolution in Bachu-Markit Area according to the principle of backstripping analysis and balanced cross section. The result shows that Bachu-Markit Area has experienced the Caledonian tectonic cycle, the Hercynian tectonic cycle, the Yanshan tectonic cycle and the Himalayan tectonic cycle since the Sinian, but the tectonic framework has been changed many times. In the early Caledonian and mid-Caledonian, the tectonic framework of Bachu-Markit Area appeared high in the northeast and low in the southwest. In the late Caledonian, the structural framework changed to be high in the north and low in the south. In the Hercynian, the tectonic framework of Bachu Area was high in the north and low in the south, but the Markit Area displayed high in the south and low in the north. In the Himalayan, the Markit Area began to tilt and turned into the slope. In addition, the Bachu Area uplifted more intensely, forming the current tectonic framework of Bachu uplift and Markit slope.

关 键 词：古构造 构造格局 古埋深 巴楚-麦盖提地区 

分 类 号：TE121[石油与天然气工程—油气勘探]