鄂尔多斯盆地中部延安地区中侏罗统延安组高分辨率层序地层研究  

The High-Resolution Sequence Stratigraphy Feature of Yanan Formation in Yanan Area, Ordos Basin

作　　者：赵俊兴[1] 陈洪德[1] 向芳[1] 

机构地区：[1]成都理工大学沉积地质研究所油气藏地质及开发工程国家重点实验室,成都610059

出　　处：《沉积学报》2003年第2期307-312,333,共7页Acta Sedimentologica Sinica

摘　　要：利用高分辨率层序地层学方法 ,以延水河剖面研究为重点 ,详细剖析了中侏罗统延安组不同级次基准面旋回划分 ,建立了鄂尔多斯盆地延安地区延安组高分辨率层序地层格架。共识别出了 36个短期、8个中期和 3个长期基准面旋回。讨论了不同级次基准面旋回叠加式样与沉积相、沉积作用和构造作用等的响应关系 ,进一步通过基准面旋回层序研究了盆地的充填演化史。On the basis of high-resolution sequence stratigraphy,the detailed study on the subdivision of different orders of the base-level cycles in middle Jurassic Yanan Formation has been performed in Yanshui river cross section,and a corresponding high-resolution sequence framework has been established in the middle part of Ordos Basin.There can be recognized 34 short,8 middle and 3 long base-level cycles.Simultaneously,the paper has also discussed the relationship between the stacking patterns of different cycles and sedimentary facies,deposition and tectonics,and furthermore,investigated the basinal filling history by the base-level cycle sequences.

关 键 词：鄂尔多斯盆地 延安地区 中侏罗统 延安组 高分辨率层序地层 沉积相 沉积作用 构造作用 

分 类 号：P534.52[天文地球—古生物学与地层学] P512.2[天文地球—地质学]