【摘要】 采用碎屑沉积物通量法将西泉地区上二叠统梧桐沟组自上而下划分为三个成因单元,每个成因单元都是由下部的基准面下降半旋回和上部的基准面上升半旋回两部分构成。西泉地区上二叠统梧桐沟组主要发育湖泊相和河流相的沉积,湖岸线控的滨岸滩坝砂是该区主要的砂体成因类型。更多还原

【Abstract】 The Upper Permian Wutonggou Formation in Xiquan area can be divided into three origin units from top to bottom by the method of terrestrial clastic sediment flux.Every origin unit includes two parts:the lower part of base-level descending semi-cycle and the upper part of base-level ascending semi-cycle.The Upper Permian Wutonggou Formation in Xiquan area are mainly composed of lacustrine facies and fluvial facies,and shoreline control on sandbodies of bank-bar are mainly original types.更多还原