摘要
根据结构单元、岩石粒度分析、河流形态参数等特征 ,对比Miall的 16种河流分类方案 ,胜利油区孤岛油田馆上段属于细粒曲流河沉积。其中洪泛平原细粒 (FF)、决口扇 (CS)和侧向加积砂坝 (LA)结构单元发育 ,其次是天然堤(LV)和决口水道 (CR)结构单元。河流曲率P大于 2 .2 ,河道宽度 10 0～ 30 0m ,河流曲率波长 10 0 0～ 1770m。河流可能临近河口湾 。
On the basis of the characteristics of architectural elements, sandstone grain size analysis, and fluvial styles of the Upper Members of Guantao Formation in Gudao oilfield, and according to stream features of 16 kinds proposed by Miall, we believe that it belongs to fine grain meandering stream. Among architectural elements, floodplain fines (FF), crevasse splay (CS) and lateral accretion macroform (LA) developed extensively, and levee (LV) and crevasse channel (CR) also developed. The channel sinuosity (P) is more than 2.2. The channel is 100～300 meters wide. The channel meander wavelength is 1 000～1 770 meters. The stream may be adjacent to an estuary, and development of sandstone bodies may be subject to fluctuation of sea level.
出处
《沉积学报》
CAS
CSCD
北大核心
2001年第3期386-393,共8页
Acta Sedimentologica Sinica
关键词
结构单元
细粒曲流河
馆上段
孤岛油田
岩石粒度分析
沉积模式
architectural elements fine grained meandering stream the Upper Member of Guantao Formation Gudao Oilfield Dongying Shandong Province
