【摘要】 塔里木寒武、奥陶纪盆地具有典型的三分结构,即碳酸盐台地相区、斜坡—陆棚相区和盆地相区。不同的盆地结构型式和沉积背景,控制着不同相区的沉积相类型和特征。在不同台地结构型式下,台地相区、斜坡—陆棚相区以及盆地相区都有着不同的沉积响应,从而构成不同的沉积相纵向组合序列。根据中国古代海域沉积环境综合模式,结合塔里木盆地沉积相发育特点,将寒武—奥陶系沉积相划分为10个相和若干亚相;并根据海域地理和地貌特征组合为三类沉积体系,即台地沉积体系、浅海陆棚沉积体系和盆地沉积体系;其纵向上可以组合成两种沉积序列,即海进沉积序列和海退沉积序列。更多还原

【Abstract】 Tarim basin consists of three typical sections in Cambrian - Ordovician, i.e. platform, slope - shelf and basin. The structural types and sedimentary backgrounds constraints the types and features of facies. Because of the difference of platform structure, platform, slope - shelf and basin have distinct diversities in facies constitution and longitudinal assembled sequence. According to the model of ancient ocean sedimentary surroundings and the development features of facies in Tarim basin, ten facies and serials of sub - facies are measured off in Cambrian -Ordovician. By Using ocean geography and physiognomy features, three sedimentary systems (platform, shelf, basin) and two longitudinal sedimentary sequence (transgression and regression) are identified.更多还原