caa a22 4500 44536484X CHVBK 20180317142927.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s11001-011-9121-5 doi (NATIONALLICENCE)springer-10.1007/s11001-011-9121-5 Geophysical evidence for cyclic sediment deposition on the southern slope of Qiongdongnan Basin, South China Sea [Elektronische Daten] [Qi-Liang Sun, Shi-Guo Wu, Thomas Lüdmann, Bin Wang, Tao-Tao Yang] Gravity flow deposits form a significant component of the stratigraphic record in ancient and modern deep-water basins worldwide. Analyses of high-resolution 3D seismic reflection data in a predominantly slope setting, the southern slope of Qiongdongnan Basin, South China Sea, reveal the extensive presence of gravity flow depositional elements in the Late Pliocene−Quaternary strata. Three key elements were observed: (1) mass transport deposits (MTDs) including slumps and debris flows, (2) turbidity current deposits including distributary channel complexes, leveed channel complexes and avulsion channel complexes, and (3) deep-water drapes (highstand condensed sections). Each depositional element displays a unique seismic expression and internal structures in seismic profiles and attribute maps. Based on seismic characteristics, the studied succession is subdivided into six units in which three depositional cycles are identified. Each cycle exhibits MTDs (slump or debris) at the base, overlain by turbidities or a deep-water drape. The genesis of these cycles is mainly controlled by frequent sea-level fluctuations and high sedimentation rates in the Late Pliocene-Quaternary. Moreover, tectonics, differential subsidence, and paleo-seafloor morphology may have also contributed to their formation processes. The present study is aimed to a better understanding of deep-water depositional systems, and to a successful hydrocarbon exploration and engineering-risk assessment. Springer Science+Business Media B.V., 2011 Deep-water sedimentation nationallicence Cyclic deposition nationallicence Mass transport deposits nationallicence Turbidite nationallicence Sea level change nationallicence Qiongdongnan Basin nationallicence Sun Qi-Liang Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut Wu Shi-Guo Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut Lüdmann Thomas Centre of Marine and Atmospheric Sciences, University of Hamburg, Hamburg, Germany aut Wang Bin PetroChina Hangzhou Institute of Geology, 310023, Hangzhou, China aut Yang Tao-Tao PetroChina Hangzhou Institute of Geology, 310023, Hangzhou, China aut Marine Geophysical Research Springer Netherlands 32/3(2011-09-01), 415-428 0025-3235 32:3<415 2011 32 11001 https://doi.org/10.1007/s11001-011-9121-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11001-011-9121-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Qi-Liang Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut NATIONALLICENCE 700 1- Wu Shi-Guo Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, 266071, Qingdao, China aut NATIONALLICENCE 700 1- Lüdmann Thomas Centre of Marine and Atmospheric Sciences, University of Hamburg, Hamburg, Germany aut NATIONALLICENCE 700 1- Wang Bin PetroChina Hangzhou Institute of Geology, 310023, Hangzhou, China aut NATIONALLICENCE 700 1- Yang Tao-Tao PetroChina Hangzhou Institute of Geology, 310023, Hangzhou, China aut NATIONALLICENCE 773 0- Marine Geophysical Research Springer Netherlands 32/3(2011-09-01), 415-428 0025-3235 32:3<415 2011 32 11001 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer