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在地表构造解析和地震剖面解释的基础上,分析了帕米尔东北缘冲断带新生代构造变形特征,提出作为冲断带前锋断层的乌泊尔断裂在不同地区存在不同的底部滑脱层.地表踏勘和高分辨率地震资料证实:乌泊尔断裂在波孜塔格附近以西沿古新统膏泥岩层滑脱,而以东则沿上白垩统泥灰岩和古新统膏泥岩层滑脱;其控制了深部隐伏冲断体系和浅部第四纪背驮盆地的形成.研究结果表明,帕米尔北缘冲断带新生代构造变形活动开始于中新世末期—上新世早期,并持续至今,对油气聚集和晚期成藏具有重要的控制作用.
Based on the analysis of the surface structure and the interpretation of the seismic profile, the Cenozoic tectonic deformation characteristics of the thrust belt in the northeast Pamir are analyzed, and it is proposed that there are different bottom slip layers in different areas as the thrust fault of the thrust belt. Surveys and high-resolution seismic data confirm that the Ubufa fault slipped along the Paleocene ooze mudstone to the west of Pocattag and slid along the Upper Cretaceous marl and Paleocene ooze mudstone to the east; Controlling the formation of deep concealed thrust system and shallow Quaternary piggyback basin.The results show that the Cenozoic tectonic deformation of the thrust belt in the northern Pamir started from the Late Miocene to Early Pliocene and continues to this day , Which plays an important role in controlling hydrocarbon accumulation and late accumulation.