上叠盆地(superimposed basin)是地槽褶皱隆起以后,经过一段相当长的地质时期后形成的断陷盆地或坳 陷盆地,经常叠置在早期地槽和晚期褶皱带内部的不同次一级构造单元之上。上叠盆地的发育与早期构造单元的 关系不大,因此它不是继承性盆地,而是具有新生性质,它的出现代表该地区的地质演化进入了一个新阶段。
鄂尔多斯盆地中生界上三叠统延长组是一套以大型内陆盆地为背景、以河流和湖泊相为主的陆源碎屑沉积。
The Yan-Chang formation of Upper Triassic in Ordos basin is mostly detritus sediments derived from rivers and lakes sedimentary environment on setting of inland basin.
四川盆地早三叠世飞仙关早期的环境基本上继承了晚二叠世长兴期末的格局。
The sedimentary environment of the Early Feixianguan Age of Early Triassic in northeastern Sichuan Basin mainly inherited the pattern of the Late Changhsingian Age of Late Permian.
利用稀土元素和微量元素,分析鄂尔多斯盆地中部上三叠统延长组母岩类型和物源方向。
Rare earth elements (REE) and trace elements were used to analyse source rock and source direction of Yanchang Formation of the Upper Triassic in Ordos Basin.
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