Source Provenance and Depositional Characteristics of the Upper Part of the Forth Member of Shahejie Formation in Binnan-Lijin Area,Dongying Depression

The provenance of the sandbodies of the upper part of the fourth member of the Shahejie Formation in Binnan-Lijin area of Dongying depression was studied by the methods of types and content of detrital grain and the distribution patterns of the ratio of characteristic elements.There were two provenance systems in the fourth member of the Shahejie Formation in Binnan-Lijin area,including Lijin provenance system from Chenjiazhuang uplift and Binnan provenance system from Binxian uplift.The detrital grain was fine and the sand with high quartz and high metamorphic lithic contents was the main clastic sedimentary in Binnan provenance system.The detrital grain was coarse and the sand with low quartz and high sedimentary lithic contents was the main clastic sedimentary in Lijin provenance system.The different provenance systems developed different sandbody types and depositional characteristics because of different mother rock properties,paleogeomorphic and tectonic evolution characteristics.The fan delta,braid delta and beach bar were the main sandbody types in Binnan provenance system.The nearshore subaqueous fan and turbidite fan were the main sandbody types in Lijin provenance system.