河流相层序地层学研究

Fluvial Facies Sequence Stratigraphy Discuss

河流相的层序地层结构是由沉积物的供给和可容纳空间之间的相互作用决定的，其居序与体系域的识别和划分则是根据河道砂体的叠置方式及相伴生的古土壤的发育情况或河流类型来进行的，低水位早期主为侵蚀下切无沉积记录，低水位晚期主为辩状河；水进时期先为曲流河、后为网状河；高水位时期为曲流河，水退时期主为辩状河。

Asluvial structures of fluvial facies are affected by each effect between supplying of taliment and pnducing of accommedately room. The recognition of their Sequence and systern tract is according to situation of piling up of channel sand they and develoPment of palesoil or nuvial type: no recod of sediment in the early LST and braided stream in the later LST, meandeting stream and anastomosing strearn in TST, meandering strearn in HST, braided strearn in the Rar.