海洋地质前沿2025，Vol.41Issue(8)：24-39,16.DOI:10.16028/j.1009-2722.2024.192
珠江口盆地滨浅海沉积特征及主控因素
Sedimentary characteristics and main controlling factors of coastal shallow sea deposits in the Pearl River Mouth Basin
摘要
Abstract
The Miocene Zhujiang Formation in Zhusan Depression of Pearl River Estuary Basin is an important oil-bearing series.However,poor study on the sedimentary paleoenvironment of the coastal shallow sea facies of Zhujiang Formation in the Qionghai Bulge restricted the further energy exploration in this area.With the guid-ance of sedimentology and the full use of core,drilling,logging,and seismic data,the sedimentary evolution and controlling factors of the first member of the Zhujiang Formation in the eastern dip end of the Qionghai Bulge were studied.Results show that:① Coastal and shallow sea sediments were developed in the research area,from which sedimentary facies of nearshore sandbar,nearshore sandbar lateral margin,nearshore mud flat,offshore sandbar,offshore sandbar lateral margin,and shallow sea mud flat were recognized.② The central part of the re-search area is characterized by the facies of nearshore sandbar,nearshore sandbar lateral margin,nearshore sand-bar,and nearshore sandbar lateral margin.The sandbar lateral margin is surrounded by sediment around the sand-bar periphery and distributed in an NE-SW direction,parallel to the coastline.③ From bottom to top,there was a transition from coastal to shallow sea sedimentation,in which sand bodies are continuously intercalated in the southwestern and northeastern parts.The thickness of sand bars in the southwest part gradually increased,while the thickness of sand bars in the middle and northeast parts initially increased and then decreased.④ The main controlling factors include paleogeomorphology on the sedimentary environment,sea level change on the type of facies belt,the provenance supply on the size of the sand bar,and the wave and current on the shape of the sand body.关键词
滨岸沉积/浅海沉积/沉积特征/珠江组/珠江口盆地Key words
coastal sedimentation/shallow sea sedimentation/sedimentary characteristics/Zhujiang Formation/Pearl River Mouth Basin分类
天文与地球科学引用本文复制引用
叶蓉,邓玄,鲁瑞彬,付晓树,刘娜,何幼斌,李华..珠江口盆地滨浅海沉积特征及主控因素[J].海洋地质前沿,2025,41(8):24-39,16.基金项目
国家自然科学基金"内蒙古乌海地区奥陶系深水复合型及迁移型重力流水道形成机理"(42272115),"鄂尔多斯盆地西南缘中—上奥陶统深水斜坡-海槽区等深流-重力流混合沉积形成机理"(42272113) （42272115）
