松辽盆地东南隆起区白垩系营城组二段沉积相分析及层序划分

依据吉林九台的野外地质勘察资料，通过分析营城组二段内部建筑结构、岩性、岩相等地质特征，运用层序地层学的理论和研究方法，对松辽盆地营城组二段砾岩进行精细的层序地层研究和层序划分对比。野外砾岩露头精细解剖揭示以辫状水道沉积最为发育，厚层砾岩由多期辫状水道垂向切叠而成，可划分为三级基准面旋回层序（1个长期、3个中期、8个短期）。

Sedimentary Facies Analysis and Stratigraphic Sequence Division of the Second Member of the Yingcheng Formation in the Southeastern Uplift Region, Songliao Basin

Based on geologic reconnaissance for Jiutai of Jilin Province and using the theories and methods of sequence stratigraphy, the 2nd Member of the Cretaceous Yingcheng Formation (K₁y²) was detai1ly divided according to their lithology, lithofacies and internal configurations. The thick conglomerate of the K₁y² field outcrops belong mainly to braided channel sediments and were formed by vertical cutting and piling, and can be divided into three-stage base-level cycle sequences(one long-term, three middle-term and eight short-term base-level cycles).