作　　者： ; ; ; ; ;

机构地区： 中国地震应急搜救中心

出　　处： 《新疆石油地质》 2009年第1期1-5,共5页

摘　　要： 在各时期沉积构造格局及厚度时空演变特征分析的基础上,阐述了准噶尔盆地不同时期沉积-构造空间展布的规律,分析了加里东运动末期、晚二叠世-中三叠世、中侏罗世末期和喜马拉雅运动期等不同时期盆地基底-盖层、前陆盆地变形的动力学演化,提出了盆地构造的变形响应及其组合样式;褶皱基底形成的动力学模式及其演化规律;前陆冲断带-前陆凹陷-前缘隆起带-中央隆起带构成了晚二叠-早三叠世准噶尔盆地的整体变形格局;晚三叠-中侏罗世末期盆地基底-盖层经历了东西向挤压-盆地剪切拉分-南北向挤压的动力学环境;晚侏罗世西北缘推覆构造为南北向挤压造成,盆内陆梁隆起以斜冲-走滑构造变形为特征;喜马拉雅运动期盆地周缘构造定型为6个样式不同的构造段。 Based on the analysis of sedimentary and structural frameworks and variations of thickness of sedimentary rocks and their spatial-temporal evolution, this paper shows the main features of sediment-structure distributions in different periods of geological time of Junggar basin, discusses the geodynamic evolutions of deformation of basement and sedimentary cover rocks, foreland basin in different periods, such as in the end of Caledonian, Late Permian-Middle Triassic, end of Middle Jurassic and Himalayan periods, and proposes the models of deformation responses and assemblages of the basin structures as well as the dynamic mechanism and tectonic evolution of folded basement in Proterozoic. It is concluded that the structural assemblages of foreland thrust belt -foreland sag-fore uplift-central uplift form the deformation framework of Junggar basin in the Late Permian-Early Triassic; the geodynamie environments of deformation between basement and sedimentary cover rocks change with EW compression-basin pull aparting-SN compression in whole Junggar basin during the Late Triassic-end of Middle Jurassic; the nappe structure of Late Jurassic in northwestern margin of Junggar basin is formed by SN compression; the Luliang uplift is characterized by oblique thrust-strike slip structural deformation, and finally, the six boundary structural segments around Junggar basin shaped in Himalayan period.

关 键 词： 准噶尔盆地 构造变形组合 动力学演化

领　　域： [石油与天然气工程]