| 珠江口盆地番禺隆起东南缘断裂坡折带及其对低位域构造—岩性油气藏的控制作用 |
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| 关键词:fault slope-break zone paleo-structrual geomorphic feature lithostratigraphic reservoirs Pearl River Mouth Basin |
| 基金项目:国家重大基础规划发展项目(编号: 2006CB202302)资助 |
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| Fault Slope-Break Zone and Its Control over Structural Lithostratigraphic Traps of Lowstand System Tracts in Southeast Panyu Uplift of the Pearl River Mouth Basin |
| The Panyu Uplift is an important oil and gas-bearing district in central south Pearl River Mouth Basin. A series of northwest and east-west striking syndepositional faults were developed during Neogene, and their development and distribution controlled the paleo-structural framework and the sedimentary filling pattern. The main syndepositional faults along the southeastern and northeastern margins of the ancient uplift formed obvious geo-morphologic abrupt zones or fault slope-break zones. The main controlling faults in the southeastern part were formed by the antithetic faults in the hinge gentle slope which were developed during syn-rifting and formed the boundary between Panyu Uplift and Baiyun deep sag. An analysis of seismic facies and seismic attributes has shown that the lowstand system tract deltaic sandstones in the middle-lower part of Zhuhai and Zhujiang Forma-tions were developed and distributed along the low slope of the fault slope-break zone. Researches indicate that the low slope lowstand system tracts along the fault slope-break zone constitute a favorable condition for the forma-tion of lithostratigraphic or structural-stratigraphic traps. This study hence has offered an important basis for the recent exploration breakthrough in this area. |
| DONG Wei,LIN Chang-song,XIE Li-hua,ZHANG Zhong-tao,YANG Xiao-fa,ZHANG Yan-mei,ZHANG Bo,CUI Li-ye.2009.Fault Slope-Break Zone and Its Control over Structural Lithostratigraphic Traps of Lowstand System Tracts in Southeast Panyu Uplift of the Pearl River Mouth Basin[J].Acta Geoscientica Sinica,30(2):256-262. |
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