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新生代特提斯洋向北消减导致欧亚板块与印度板块碰撞,大陆会聚控制青藏高原下地壳增厚、上地壳逆冲叠置和隆升,形成高原地貌.随着青藏高原隆升和向北、向东推挤,挤压构造变形不断向外扩展,形成现今全球最大弥散型陆内构造变形域和板内变形最为活跃的巨型盆山体系,即环青藏高原盆山体系.由于不均一的小克拉通拼贴,地壳发生分异,造山带回春上升,小克拉通沉降,古板块边缘形成继承性前陆盆地群或前陆冲断带群.由这些复活的古造山带、前陆冲断带和小型克拉通盆地三个构造单元共同构成环青藏高原盆山体系.环青藏高原盆山体系是一个巨型的构造体系和特殊性质的喜马拉雅运动期构造域,是中国中西部喜马拉雅运动的主要特征,也是可以与青藏高原相提并论的巨型大地构造单元.挤压冲断构造变形带沿昆仑山-阿尔金山-祁连山-龙门山呈弧形带向北、向东扩展;随着晚新生代印藏持续碰撞,欧亚大陆强烈变形,构造变形带向外围进一步扩展,传递到阿尔泰山-阴山-吕梁山-华蓥山弧形带.冲断构造不断向环青藏高原外围扩展的同时,在盆山体系内部发生强烈陆内变形,古造山带复活,在造山带与盆地边缘形成了新的前陆盆地,冲断构造变形依次从造山带向克拉通盆地内扩展.在欧亚大陆与印度板块的碰撞及其远程效应的控制下,环青藏高原巨型盆山体系从内向外的构造变形强度、盆山耦合程度依次降低;克拉通边缘的单个盆山组合也具有从山前向克拉通方向构造变形强度依次降低,构造变形样式逐渐变得简单、构造变形时间依次变新的规律.在整个环青藏高原巨型盆山体系中,整体表现为三个构造分段:西段构造变形传播、中段高原增生-推覆、东段走滑-抬升.在环青藏高原盆山体系中,古生界克拉通盆地和中新生界前陆冲断带是具有重要天然气勘探价值的两个基本构造单元,它决定了中国中西部天然气分布主要受古生界克拉通古隆起和中新生界前陆冲断带的控制,具有多期成烃与晚期成藏的特点.
The decrease of the Cenozoic Tethys to the north led to the collision of the Eurasian plate with the Indian plate, and the convergence of the continent controlled the thickening of the crust under the Qinghai-Tibet Plateau, the superimposition and uplift of the upper crust, and the formation of a plateau. As the Qinghai- North and East to the east, squeeze the tectonic deformation continue to expand outward, forming today the world’s largest dispersion of intracontinental tectonic deformation and deformation of the plate is the most active giant basin mountain system, that is, the Central Tibetan Plateau mountain system due to the uneven small Craton collage, crustal differentiation, orogeny rebirth, small cratonic settlement, the formation of the edge of the old plate to form a succession of foreland basins or foreland thrust belt group .From these revival of the ancient orogenic belt, foreland Chong The three tectonic units of fault zone and small craton basin make up the basin-ring system of the Central Tibetan Plateau.The basin-and-mountain system of the Central Tibetan Plateau is a giant structural system and special-type Himalayan tectonism, which is the main feature of the Himalayan movement in central and western China, It is also a giant tectonic unit that can be compared with the Qinghai-Tibet Plateau. The crustal deformation zone along the Kunlun Mountains - Altun Mountains - Qilian Mountains - Longmenshan arc belt northward , Extending to the east; with the continued collision of late Cenozoic Indosinian deposits, the Eurasian continent was strongly deformed and the tectonic deformation zone extended to the periphery and passed to the Altay Mountain - Yinshan - Lvliang Mountain - Huayingshan Arc Zone. At the same time as the extension to the periphery of the Qinghai-Xizang Plateau, strong intracontinental deformation occurred in the basin-basin system and the ancient orogenic belt was revived. A new foreland basin was formed at the orogenic belt and the margin of the basin. The thrust deformation tectonic deformation followed the order from the orogenic belt to the cratonic basin Within the continental margin and the Indian plate collision and its remote control, under the control of the giant Tibetan-Tibetan Plateau Central Plains, the tectonic deformation strength and the degree of coupling between the basin and the mountain decrease from the inside to the outside, and the single basin- The tectonic deformation intensity in the direction of Piedmont decreases in turn, the tectonic deformation pattern becomes simpler, and the tectonic deformation time changes in turn. In the giant basin-mountain system around the Qinghai-Tibet Plateau, the tectonic deformation is characterized by three structural segments as a whole: the western segment Tectonic deformation propagation, mid-plateau accretion-nappe, strike-slip-uplift in the eastern segment.In the basin-ring system around the Qinghai-Tibet Plateau, the Paleozoic cratonic basin and Mesozoic-Cenozoic The Luchuang fault belt is two basic tectonic units with important exploration value of natural gas. It determines that the distribution of natural gas in central and western China is mainly controlled by the Paleozoic craton paleo-uplift and Mesozoic-Cenozoic foreland thrust belt, Hydrocarbons and Characteristics of Late Accumulation.