摘要
新疆北部石炭纪洋陆转换过渡期,经历了以下两个演化阶段:早石炭世碰撞间歇期伸展-残留洋闭合、陆-陆碰撞阶段和晚石炭世碰撞期后伸展垮塌-板内变形作用阶段。根据石炭纪的板块构造活动背景分析,结合区域构造-沉积岩石组合,初步拟定新疆北部早石炭世原型盆地类型主要包括5类:残留洋、陆缘坳陷、裂陷槽、裂谷、陆内坳陷;晚石炭世原型盆地可简要分为3类:裂陷槽、陆缘坳陷、裂谷或断陷。根据上石炭统原型盆地后期叠加改造特征,将新疆北部现今保存在覆盖区内的上石炭统残留盆地及其叠加改造类型分为两大类六亚类:首先根据是否存在二叠系分为继承型和叠加型两大类,然后再根据中生代及新生代盆地叠加特征分为六亚类,分别为连续继承型、早继承早叠加型、早继承晚叠加型、三叠系叠加型、侏罗系叠加型及白垩系叠加型。
The ocean-continent transition period in northern Xinjiang has experienced the two evolvement stages in Carboniferous period： one is from extension of the collision diapause to closure of remnant ocean and the other is from intracontinental collision and post-collision collapse in early Carboniferous to intra-plate deformation stage in late Carboniferous. Based on the dynamic background of the plate tectonic during the Carboniferous and the regional structure and sedimentary rock assemblage, it can be preliminarily determined that the types of prototype basin in the north of Xinjiang contain, remnant ocean, epicontinental sinking, taphrogenic trough, rift valley and intracontinental sinking during early Carboniferous~ taphrogenic trough, epicontinental sinking and rift valley or rupture during the late Carboniferous. According to superposition and deformation features of the prototype basins at late Early Carboniferous, the Early Carboniferous remnant basin preserved in covered area in northern Xinjiang and its superimposition deformation can be classified into two categories containing six subtypes. Firstly, two superimposition categories （inheritance model and superposition model） are defined based on whether there is Permian System. Then, according to the superposition features of Mesozoic and Cenozoic basins, five subtypes can be defined： successive inheritance model, early inheritance and early superposition model, early inheritance and late superposition model, Triassic superposition model, Jurassic superposition model and Cretaceous superposition model.
出处
《地质学报》
EI
CAS
CSCD
北大核心
2013年第3期311-320,共10页
Acta Geologica Sinica
基金
国家"973"项目(编号2011CB201101)
国家重大科技攻关项目"重点盆地地层油气藏成藏机理与分布规律"(编号2011ZX05001-001-006)
中石油新疆油田分公司重大项目"新疆北部石炭系火山岩油气地质理论
核心技术与勘探重大突破"及"准噶尔盆地火山岩油气藏成藏机理与勘探实践"资助成果
关键词
构造背景
构造演化
石炭系
新疆北部
tectonic background
tectonic evolution
Carboniferous
northern of Xinjiang
