Features of Late Cenozoic Deepwater Sedimentation in Southern Qiongdongnan Basin, Northwestern South China Sea

被引：0

作者：

袁圣强 ^{[1
,2
]}

姚根顺 ^{[1
,2
,3
]}

吕福亮 ^{[3
]}

胡冰 ^{[3
]}

贺晓苏 ^{[3
]}

王彬 ^{[3
]}

李丽 ^{[3
]}

机构：

[1] Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences,Qingdao , China

[2] Graduate University of Chinese Academy of Sciences,Beijing , China

[3] PetroChina Hangzhou Institute of Geology,Hangzhou , China

来源：

Journal of Earth Science | 2009年 / 20卷 / 01期

关键词：

Qiongdongnan basin; deepwater sedimentary system; channel; polygon fault; the South China Sea;

D O I：

暂无

中图分类号：

P618.13 [石油、天然气];

学科分类号：

0709 ; 081803 ;

摘要：

Based on high resolution 2D and 3D seismic data acquired in recent years, using sequence stratigraphy analysis and geophysical methods, we discuss the features of Late Cenozoic deepwater sedimentation in the southern Qiongdongnan (琼东南) basin. The study area entered a bathyal slope environment in the Miocene. The channel developed in the Sanya (三亚) Formation was controlled by a fault break, and its shingled seismic characteristics represent multiple erosion and fill, which may indi-cate that turbidite current developed in the slope environment. The polygon faults found in mudstone of the Meishan (梅山) Formation represent the deepwater hungry sedimentary environment. The large-scale channels developed on the top of Huangliu (黄流) Formation could be the result of a big sea level drop and an increase of sediment supply. The fantastic turbidite channel developed in Late Qua-ternary in the slope environment has "fan-like" body and long frontal tiny avulsion channel. The analy-sis of these features suggests that the sediment supply of the study area in the post-rifting period was dominant from the Vietnam uplift in the southwest. These deepwater sedimentary features could be potential reservoirs or migration pathways for deepwater petroleum systems.

引用

页码：172 / 179

页数：8