乌鲁木齐—米泉断裂及其油气地质意义
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摘要
地质、地震和重磁力资料综合研究表明,乌鲁木齐—米泉断裂是一条呈NE向延伸的大型左行压扭走滑基底断裂,地表浅层表现为以左行压扭走滑变形组合为主的大型复杂构造变形带,平面上切割并错断NWW向和近EW向断裂。该断裂经历了印支末期、燕山期和喜马拉雅期多期构造活动,对其两侧地区的构造演化和油气成藏条件具有重要影响。沿断裂带形成的一系列呈雁行排列的大型背斜、斜坡带和隆起是油气聚集的有利地区。
Based on comprehensive analysis of geological, prospecting seismic, gravitational and magnetic data,the Urumqi-Miquan fault is identified as extending in the NE-SW direction with characteristics of large-size left-handed wrench basement fault. Strike-slip structural assemblage in the shallow crust cuts the NWW and the near EW faults. It underwent multi-stages evolution including Indosinian, Yanshanian and Himalayan movement and has a deep influence on hydrocarbon pool-forming condition in this area. Large-sized anticline, slop and uplift along the fault are favorable areas for hydrocarbon accumulation.
Based on comprehensive analysis of geological, prospecting seismic, gravitational and magnetic data,the Urumqi-Miquan fault is identified as extending in the NE-SW direction with characteristics of large-size left-handed wrench basement fault. Strike-slip structural assemblage in the shallow crust cuts the NWW and the near EW faults. It underwent multi-stages evolution including Indosinian, Yanshanian and Himalayan movement and has a deep influence on hydrocarbon pool-forming condition in this area. Large-sized anticline, slop and uplift along the fault are favorable areas for hydrocarbon accumulation.
引文
王家林,吴健生,于鹏,等.2001年度准噶尔盆地综合地区物理资料处理解释研究,2003.
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[1]费鼎,张新生.准噶尔地区磁场解释及区域构造特征[J].地球物理学报,1987,30(5):459～468
[2]伍致中.准噶尔盆地的构造演化特征、分区及含油气评价[J].新疆地质,1986,4(3):20～33
[3]朱志澄.构造地质学[M].武汉:中国地质大学出版社,2002,192～201
[4]孙自明,何治亮,牟泽辉.准噶尔盆地南缘构造特征及有利勘探方向[J].石油与天然气地质,2004,25(2):216～221
[5]孙自明.准噶尔盆地南缘山前冲断带地质特征与勘探对策[A].见:刘光鼎,贾承造主编.准噶尔油气勘探[C].北京:石油工业出版社,2004,79～88
[6]吴建华,向书政,吴晓智,等.准噶尔盆地南缘东部构造样式与形成机制[J].新疆石油地质,2002,23(3):208～210
[7]吴晓智,王立宏,徐春丽.准噶尔盆地南缘齐古—小渠子地区构造特征及油气勘探前景[J].石油勘探与开发,1994,21(1):1～7
[8]高国英,曲延军.乌鲁木齐地区构造应力场与中强震活动特征研
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