Sedimentary architecture of submarine channel-lobe systems under different seafloor topography:Insights from the Rovuma Basin offshore East Africa

作     者：Mei Chen Sheng-He Wu Rui-Feng Wang Jia-Jia Zhang Peng-Fei Xie Min Wang Xiao-Feng Wang Ji-Tao Yu Qi-Cong Xiong Mei Chen;Sheng-He Wu;Rui-Feng Wang;Jia-Jia Zhang;Peng-Fei Xie;Min Wang;Xiao-Feng Wang;Ji-Tao Yu;Qi-Cong Xiong

作者机构：State Key Laboratory of Petroleum Resources and ProspectingChina University of Petroleum(Beijing)Beijing102249China College of GeosciencesChina University of Petroleum(Beijing)Beijing102249China Faculty of GeosciencesUniversity of BremenBremen28359Germany MARUM-Center for Marine and Environmental SciencesUniversity of BremenBremen28359Germany Research institute of Petroleum Exploration and DevelopmentPetroChinaBeijing10083China School of GeosciencesYangtze UniversityWuhan 100083HubeiChina CNODC Mozambique Ltd.Beijing 100034China 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2024年第21卷第1期

页      面：125-142页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：The study is funded by the Cooperation Project of China National Petroleum Company(CNPC)and China University of Petroleum-Beijing(CUPB)(No.RIPED-2021-JS-552) the National Natural Science Foundation of China(Nos.42002112,42272110) the Strategic Cooperation Technology Projects of CNPC and CUPB(No.ZLZX2020-02) the Science Foundation for Youth Scholars of CUPB(No.24620222BJRC006) We thank the China Scholarship Council(CSC)(No.202106440048)for having funded the research stay of Mei Chen at MARUM,University of Bremen.We thank Elda Miramontes for her constructive comments and suggestions that helped us improve our manuscript 

主　　题：Submarine fan Seafloor topography Sedimentary architecture Slope system SW Indian ocean 

摘      要：Seafloor topography plays an important role in the evolution of submarine ***,it is still not so clear how the shape of slope affects the three-dimensional(3-D)architecture of submarine *** this study,we analyze the effect of topography factors on different hierarchical lobe architectures that formed during Pliocene to Quaternary in the Rovuma Basin offshore East *** characterize the shape,size and growth pattern of different hierarchical lobe architectures using 3-D seismic *** find that the relief of the topographic slope determines the location of preferential deposition of lobe complexes and single *** the topography is irregular and presents topographic lows,lobe complexes first infill these *** lobes are deposited preferentially at positions with higher longitudinal(***-slope)slope *** the longitudinal slope becomes higher,the aspect ratio of the single lobes ***(***-slope)topography does not seem to have a strong influence on the shape of single lobe,but it seems to affect the overlap of single *** the lateral slope gradient is relatively high,the single lobes tend to have a larger overlap ***,as the average of lateral slope and longitudinal slope gets greater,the width/thickness ratio of the single lobe is smaller,*** tend to accumulate *** results demonstrate that the shape of slopes more comprehensively influences the 3-D architecture of lobes in natural deep-sea systems than previously other lobe deposits and analogue experiments,which helps us better understand the development and evolution of the distal parts of turbidite systems.