西昆仑山前甫沙—克里阳地区中新生代构造事件的裂变径迹证据及其地质意义  

Fission track evidence for Meso-Cenozoic tectonic event of Fusha—Keliyang area in piedmont of the western Kunlun Mountains and its geological significance

作　　者：廖晓[1,2] 王震亮[1,2] 范昌育[1,2] 杨有星 解巧明 赵子龙 LIAO Xiao;WANG Zhenliang;FAN Changyu;YANG Youxing;XIE Qiaoming;ZHAO Zilong(State Key Laboratory of Continental Dynamics,Northwest University,Xi’an 710069,China;Department of Geology,Northwest University,Xi’an 710069,China;Oil and Gas Resource Research Center,China Geological Survey,Beijing 100029,China)

机构地区：[1]西北大学大陆动力学国家重点实验室,陕西西安710069 [2]西北大学地质学系,陕西西安710069 [3]中国地质调查局油气资源调查中心,北京100029

出　　处：《中南大学学报（自然科学版）》2018年第3期642-654,共13页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(41672121);中国地质调查局项目(DD20160203)~~

摘　　要：基于甫沙—克里阳地区位于塔里木盆地和西昆仑造山带的盆山结合部位,其构造位置特殊、演化复杂,综合运用锆石、磷灰石裂变径迹测年及磷灰石热演化历史模拟方法,结合野外地质调查和地震资料,对该地区进行低温热年代学研究。研究结果表明:甫沙—克里阳地区中新生代发生5期构造事件,对应地质时代分别为晚三叠世、晚侏罗世、晚白垩世、早中新世和上新世;各期构造事件在本区及周邻均具有明显的地质响应,其中,晚三叠世的构造事件具有长期整体抬升的特征,该事件使得本区烃源岩的热演化程度延缓,为油气的晚期成藏奠定了基础;而上新世的快速抬升事件则使得研究区内烃源岩、断裂输导和圈闭等成藏要素相互耦合,促使油气发生晚期成藏,对该区油气聚集具有重要的控制作用。The Fusha-Keliyang area is located in the conjunction region of Tarim Basin and western Kunlun Orogenic Belt,which has a special tectonic location and complex evolutionary history.Zircon,apatite fission track dating and time-temperature thermal history modeling combined with field geological survey and seismic data were carried out to analyze the uplifting history of the Fusha-Keliyang area.The results show that the Fusha-Keliyang area undergoes five cooling events which occurs in the Late Triassic,Late Jurassic,Late Cretaceous,Early Miocene and Pliocene.The five cooling events have good response relationship with the regional background and field geological characteristics.The Late Triassic uplift event has the characteristics of long-term overall uplift,which lays the foundation for the late hydrocarbon accumulation.The Pliocene uplift event makes the source rock,faults,trap couple with each other in the study area,which leads to oil and gas accumulation in the late stage,and plays an important role in controlling the hydrocarbon accumulation in the area.

关 键 词：油气聚集 裂变径迹 构造事件 中新生代 甫沙—克里阳地区 西昆仑山前 

分 类 号：P542[天文地球—构造地质学]