摘要
Sr/Ba比值是沉积环境判别的重要标志之一。根据新田地区802钻孔中上二叠统龙潭组岩石的Sr/Ba的垂向分布特征,对钻孔岩性、层序、生物化石等标志进行对比,分析晚二叠世沉积环境及成煤条件。结果表明新田地区晚二叠世沉积环境多变,海水进退反复,主要为海陆交互相、多旋回沉积层。晚二叠世,区内的沉积环境主要为三角洲相、潟湖、障壁岛,开阔性台地、局限性台地等。
Sr / Ba ratios were commonly used for environmental analysis. Based on distribution characteristics of Sr / Ba ratios of sediments Core 802 located in Xintian,Jiangxi Province,combined with drilling lithology and fossils,to analyze sedimentary environment and coalforming conditions of late Permian. The results exhibited that the environment was changeable,transgression and regressive frequently appeared alternately,which mainly formed sea-continent facies and polycyclic deposits. Sedimentary environment of Late Permian was mainly composed with delta,lagoons,barrier islands,the open platform and the limitations of the platform,etc.
出处
《中州煤炭》
2015年第12期97-100,共4页
Zhongzhou Coal
基金
中央地质勘查基金项目(2013360008)
江西省地质勘查基金项目(20120103)
关键词
龙潭组
沉积环境
三角洲相
成煤条件
锶钡比
Longtan formation
depositional environment
delta facies
coal-forming conditions
Sr / Ba ratios
