准噶尔盆地南缘构造变形特征及其主控因素

英文篇名：Deformation Characteristics in the Southern Margin of the Junggar Basin and Their Controlling Factors
中文刊名：地质学报
英文刊名：Acta Geologica Sinica
作者：陈书平 ; 漆家福 ; 于福生 ; 杨桥
英文作者：CHEN Shuping1 ; 2) ; QI Jiafu1 ; 2) ; YU Fusheng1 ; 2) ; YANG Qiao1 ; 2)1) Key Laboratory for Hydrocarbon Accumulation ; Ministry of Education ; Beijing ; 102249 2) Department of Geoscience ; China University of Petroleum ; Beijing ; 102249
中文关键词：准噶尔盆地南缘 ; 构造 ; 构造样式 ; 构造形成时间 ; 变形主控因素
英文关键词：Junggar Basin ; tectonics ; tectonic style ; deformation time ; controlling factorBasement-Involved Transpressional Structure and the Formation of the Bachu Uplift ; Tarim Basin ; Northwestern China$$$$ YANG Minghui1) ; JIN Zhijun2) ; Lü Xiuxiang1) ; PAN Wenqing3) ; HU Jianfeng3)1) Basin & Reservoir Research Center ; China University of Petroleum ; Key Laboratory for Hydrocarbon Accumulation ; Ministry of Education ; Beijing ; 102249 2) Institute of Petroleum Exploration and Development ; SINOPEC ; Beijing ; 1000833) Tarim Oilfield Company ; CNPC ; Korla ; Xinjiang ; 841000AbstractThe uplift concomitance with strike-slip faults is consequent on restraining bend in plate oblique collision. The oblique collision of the India and Eurasian plate cause the basement-involved structure of the Tarim Basin boundary and inside to put mostly up the double features as thrust and strike-slip fault. According to seismic ; well data ; remote sensing geology and structural geometry ; this paper indicated the the basement-involved transpressional structure is a composite of basement-involved structure and basement-transpressional structure such as the Aqia-Tumuxiule faults and Selibuya-Mazatagh faults located on the both sides of the Bachu uplift. The combination of these structural styles consists of three sections ; basement strike-slip faults on the both ends and basement-involved thrust in the middle part. The formation of the Bachu uplift mainly related to the action of basement-involved transpressional structure of the Aqia-Tumuxiule faults. The evolution of the Bachu uplift presents the characteristics of "Seesaw" and can divide into two periods ; the southern Bachu uplift raised along the Mazatagh fault before the Carboniferous ; the maximum erosional thickness at least 530 m ; and before the Paleogene the main erosion area exhibited to the south of the Tumuxiuke fault ; the maximum erosional thickness more than 1100 m. The main deformation of the southern Bachu uplift completed before the Carboniferous and the strata reduction is about 55%. The northern part had postponed to pre-Paleogene and the strata reduction is also about 55%. However ; the strata reduction in the middle part of the Bachu uplift is different from the northern and southern parts and escalated at all times to reach the maximum before pre-Pliocene ; and accounts for 52%. Key words ; basement-involved structure ; transpressional structure ; tectonic evolution ; Bachu uplift ; Tarim Basin
出版日期：2007-02-15
机构：中国石油大学(北京)教育部油气成藏机理重点实验室,中国石油大学(北京)教育部油气成藏机理重点实验室,中国石油大学(北京)教育部油气成藏机理重点实验室,中国石油大学(北京)教育部油气成藏机理重点实验室北京,102249中国石油大学(北京)地球科学系,北京,102249,北京,102249中国石油大学(北京)地球科学系,北京,102249,北京,102249中国石油大学(北京)地球科学系,北京,102249,北京,102249中国石油大学(北京)地球科学系,北京,102249
年：2007
期：02
出版单位：地质学报

摘要

本文通过地面地质调查和地震资料的构造解释,研究了准噶尔盆地南缘构造变形特点及变形主控因素。认为准噶尔盆地南缘构造变形具有南北分带、东西分段和上下分层的变形特点,构造样式为逆冲断层相关褶皱,包括断冲褶皱、断展褶皱、滑脱褶皱、断弯褶皱和断束褶皱。构造形成时间主要是在第四纪,其中喜马拉雅运动Ⅲ幕主要影响到变形后缘山前推举带的变形,早更新世末期的新构造运动使准噶尔盆地南缘全面变形,形成现今构造格局。研究证明,在构造变形中起决定作用的是侏罗系煤层,其分布范围决定了变形范围,其厚度决定了变形强度和应力向前传递的远近程度。
Based on the field work and interpretation of seismic profiles, the deformation characteristics in the southern margin of the Junggar Basin and their controlling factors are discussed. The deformation in the southern margin of the Junggar Basin is characterized by zonation from the south to the north, segmentation from the west to the east, and layering from the deep to the shallow. The tectonic styles formed are fault-associated folds, including break-thrust folds, fault-propagation folds, detachment folds, fault-bend folds, and fault-arrest folds. The structures were formed mainly in the Quaternary. The third episode of the Himalayan movement affected the trailing edge of the deformation belt, and the movement at the end of the early Pleistocene led the southern margin of the Junggar Basin to deform completely. It has been proved that the coal layer in the Jurassic system played a very important role in the deformation. Its distribution range determined the deformation range, and its thickness determined both the intensity of deformation and the transmission distance of the tectonic stress.

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