赣西南早古生代复理石地层的沉积相、环境和旋回

对赣西南地区塞武纪－奥陶纪复理石的沉积学研究表明，它们主要由深水沉积组成，属于浊流沉积和远洋一半远洋沉积，其中包含５个不同相类型，即砂岩相、砂岩－泥岩相、粉砂岩－泥岩相、泥（板）岩相和硅岩相。相的分布特征反映它们形成于中扇、外扇和深海平原环境。复理石层序中存在３个不同级别的沉积旋回，分别为海平面变化、盆地沉降和海底扇进积作用所控制。

Sedimentary facies, environments and cycles of the Early Paleozoic flysch in Southwest Jiangxi

There distribute extensively thick-layered paleozoic flysch deposits in Sou theast China,where the Cambrian-Ordovician flysch in southwest Jiangxi Province is studied sedimentologically. It is shown that the flysch is chiefly composed of deep. water environment deposits belonging to turbidity current deposits, pelagic and he mipelagic deposits. Five distinct facies are recognized from the rocks: sandstone facies, sandstone-mudstone facies, siltstone-mudstone facies, mudstone (slate) facies and chert facies. The distribution of the facies leads to the consideration that the flysch formed in the environments of middle fan, lower fan and deep-sea plain respective ly. Three different scales of sedimentary cycles in the flysch sequence are controlled by the factors of sea level changes, basin subsidence and submarine fan progradation.