东昆仑山北缘山前构造带的特征及其对油气成藏的意义
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摘要
东昆仑山北缘山前构造带位于柴达木盆地南部,中新生代以来受东昆仑山和阿尔金断裂双重构造作用的影响,其油气成藏赋存规律尚不十分清楚。结合前人的资料,根据最新的地震资料解释成果,对研究区主要断裂的构造特征、活动性质、时代及其对油气成藏的控制作用进行了研究,认为东昆仑山北缘断裂与东昆仑山隆升、阿尔金断裂活动相关,中新世早期和早更新世末期为2期主要的活动期次,控制了该区生烃凹陷、油气成藏和后期的次生油藏。因此,研究东昆仑山北缘山前构造带的演化规律对寻找同类型油气藏具有重要意义。
The north foreland of East Kunlun Mountains,located in south Qaidam Basin,has experienced dual events of the uplift of East Kunlun Mountains and the strike-slipping of the Altyn Tagh fault since Mesozoic and Cenozoic period.Controversy still exists concerning the regularity of oil and gas accumulation and storage.Based on the new interpretation of the seismic data and other data as well as studies of the structural characteristics,activity properties and epochs and the control of the main faults over oil and gas resources in the study area,the authors hold that the north edge fault of East Kunlun Mountains was related to the uplift of the Kunlun Mountains and the activity of Altyn Tagh fault.The early stage of Miocene and the last phase of Early Pleistocene were main faulting active stages.This fault not only controlled the formation of hydrocarbon depressions and oil and gas resources but also changed the oil accumulation and formed secondary oil pools.Therefore,it is likely to find the same type oil and gas reservoirs in the Qaidam Basin through the study of the evolution of East Kunlun Mountain fault.
The north foreland of East Kunlun Mountains,located in south Qaidam Basin,has experienced dual events of the uplift of East Kunlun Mountains and the strike-slipping of the Altyn Tagh fault since Mesozoic and Cenozoic period.Controversy still exists concerning the regularity of oil and gas accumulation and storage.Based on the new interpretation of the seismic data and other data as well as studies of the structural characteristics,activity properties and epochs and the control of the main faults over oil and gas resources in the study area,the authors hold that the north edge fault of East Kunlun Mountains was related to the uplift of the Kunlun Mountains and the activity of Altyn Tagh fault.The early stage of Miocene and the last phase of Early Pleistocene were main faulting active stages.This fault not only controlled the formation of hydrocarbon depressions and oil and gas resources but also changed the oil accumulation and formed secondary oil pools.Therefore,it is likely to find the same type oil and gas reservoirs in the Qaidam Basin through the study of the evolution of East Kunlun Mountain fault.
引文
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[12]葛肖虹,王敏沛,刘俊来.重新厘定“四川运动”与青藏高原初始隆升的时代、背景——黄陵背斜构造形成的启示[J].地学前缘,2010,17(4):206-217.
[13]任收麦,葛肖虹,杨振宇,等.36Cl断代法应用于青藏高原末次快速隆升的构造事件研究[J].地质学报,2006,80(8):1110-1117.
[14]Ren Shoumai,Liu Yongjiang,Ge Xiaohong.Abrupt uplift of Ti-betan Plateau at the end of early Pleistocene and Australasian impactevent[J].Global Geology,2009,12(3):145-155.
①付锁堂,张敏,尹成明,等.柴达木盆地油气资源战略调查及评价项目工作成果报告.中国石油青海油田公司,2008.
②党玉琪,葛肖虹,Franz Neubauer,等.阿尔金断裂、昆仑山前推覆体对柴达木盆地构造形成的控制及柴西地区有利Ⅱ级油气聚集带的预测.中国石油青海油田公司,2005.
[2]贾承造,宋岩,魏国齐,等.中国中西部前陆盆地的地质特征及油气聚集[J].地学前缘,2005,12(3):3-13.
[3]沈亚,陈元忠,孙维军,等.柴达木盆地地震地质研究新进展[J].石油地球物理勘探,2008,43(增刊1):146-150.
[4]倪金龙,汪劲草,周莉,等.中—新生代东昆仑造山带构造事件及柴西南盆地原型研究[J].现代地质,2007,21(3):505-517.
[5]吴珍汉,叶培盛,赵文津.东昆仑南部晚新生代逆冲推覆构造系统[J].地质通报,2007,26(4):448-456.
[6]葛肖虹,任收麦,马立祥,等.青藏高原多期次隆升的环境效应[J].地学前缘,2006,13(6):118-130.
[7]李长安,殷鸿福,于庆文.东昆仑山构造隆升与水系演化及其发展趋势[J].科学通报,1999,44(2):211-214.
[8]伍永秋,崔之久,葛道凯,等.青藏高原何时隆升到现代的高度——以昆仑山垭口地区为例[J].地理科学,1999,19(6):481-484.
[9]宋春晖,高东林,方小敏,等.青藏高原昆仑山垭口盆地晚新生代高精度磁性地层及其意义[J].科学通报,2005,50(19):2145-2154.
[10]Yin An,Dang Yuqi,Zhang Min,et al.Cenozoic tectonic evolutionof Qaidam Basin and its surrounding regions(Part 2):wedge tecton-ics in southern Qaidam Basin and the eastern Kunlun Range[J].Ge-ological Society of America,2008,(Special Paper 433):369-390.
[11]任收麦,葛肖虹,刘永江,等.柴达木盆地北缘晚中生代—新生代构造应力场——来自构造节理分析的证据[J].地质通报,2009,28(7):877-887.
[12]葛肖虹,王敏沛,刘俊来.重新厘定“四川运动”与青藏高原初始隆升的时代、背景——黄陵背斜构造形成的启示[J].地学前缘,2010,17(4):206-217.
[13]任收麦,葛肖虹,杨振宇,等.36Cl断代法应用于青藏高原末次快速隆升的构造事件研究[J].地质学报,2006,80(8):1110-1117.
[14]Ren Shoumai,Liu Yongjiang,Ge Xiaohong.Abrupt uplift of Ti-betan Plateau at the end of early Pleistocene and Australasian impactevent[J].Global Geology,2009,12(3):145-155.
①付锁堂,张敏,尹成明,等.柴达木盆地油气资源战略调查及评价项目工作成果报告.中国石油青海油田公司,2008.
②党玉琪,葛肖虹,Franz Neubauer,等.阿尔金断裂、昆仑山前推覆体对柴达木盆地构造形成的控制及柴西地区有利Ⅱ级油气聚集带的预测.中国石油青海油田公司,2005.
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