Seismic geomorphological reconstructions of Plio-Pleistocene bottom current variability at Goban Spur
作者： Stanislas Delivet , Bram Van Eetvelt , Xavier Monteys , Marta Ribó , David Van Rooij
DOI: 10.1016/J.MARGEO.2016.01.001
关键词: Internal tide 、 Sedimentary depositional environment 、 Geology 、 Plio-Pleistocene 、 Mass wasting 、 Sediment 、 Internal wave 、 Pleistocene 、 Geomorphology 、 Contourite 、 Geochemistry and Petrology 、 Oceanography
摘要: Abstract High-resolution single channel sparker reflection seismic data revealed the presence of large-scale sediment waves nearby DSDP Site 548, located on Goban Spur. They developed in a gentle terraced environment which contrasts with canyon-incised Celtic margin, and relatively smooth Porcupine Seabight to north. Based upon morphological characteristics observed seabed buried waves, energetic alongslope bottom currents are thought be driving mechanism for wave development. These driven their turn by an enhanced internal tide regime that could attributed introduction Mediterranean Outflow Water. The 548 downhole geophysical stratigraphic analysis allowed differentiation three sequences relate evolutionary stages since lower Pliocene. bounded local erosional events, associated mass wasting seem occur roughly synchronously major northern hemisphere glaciations, respectively during Lower Pleistocene (~ 2.5 2.15 Ma), Middle (~ 0.45 Ma). sequence (from ~ 4.5 ~ 2.15 Ma) shows no evidence bottom-current sedimentation. It is however settled over surface indicate intermediate characterised have gradually close association palaeo-seafloor irregularities. inferred sedimentation resumed relative current energy increase. youngest recorded active formation, similar previous sequence. Although Spur cannot regarded as contourite drifts such, evolution corresponds other well-documented depositional systems, influenced
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sci-hub.se 参考文章(112)
C.W. Poag, L.A. Reynolds, J.M. Mazzullo, L.D. Keigwin, , Foraminiferal, lithic, and isotopic changes across four major unconformities at Deep Sea Drilling Project Site 548, Goban Spur: Chapter 14 in Initial reports of the Deep Sea Drilling Project ,vol. 80, pp. 539- 555 ,(1985) , 10.2973/DSDP.PROC.80.114.1985
David B. Bell, Simon J.A. Jung, Dick Kroon, The Plio-Pleistocene development of Atlantic deep-water circulation and its influence on climate trends Quaternary Science Reviews. ,vol. 123, pp. 265- 282 ,(2015) , 10.1016/J.QUASCIREV.2015.06.026
Michele Rebesco, Dorrik Stow, Seismic expression of contourites and related deposits: a preface Marine Geophysical Researches. ,vol. 22, pp. 303- 308 ,(2001) , 10.1023/A:1016316913639
D.A.V. Stow, J.-C. Faugères, Chapter 13 Contourite Facies and the Facies Model Developments in Sedimentology. ,vol. 60, pp. 223- 256 ,(2008) , 10.1016/S0070-4571(08)10013-9
Hendrik M. van Aken, The hydrography of the mid-latitude Northeast Atlantic Ocean Deep Sea Research Part I: Oceanographic Research Papers. ,vol. 47, pp. 789- 824 ,(2000) , 10.1016/S0967-0637(99)00112-0
D. J. R. Thornalley, H. A. Bauch, G. Gebbie, W. Guo, M. Ziegler, S. M. Bernasconi, S. Barker, L. C. Skinner, J. Yu, A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period Science. ,vol. 349, pp. 706- 710 ,(2015) , 10.1126/SCIENCE.AAA9554
F.J. Hernández-Molina, F.J. Sierro, E. Llave, C. Roque, D.A.V. Stow, T. Williams, J. Lofi, M. Van der Schee, A. Arnáiz, S. Ledesma, C. Rosales, F.J. Rodríguez-Tovar, E. Pardo-Igúzquiza, R.E. Brackenridge, Evolution of the gulf of Cadiz margin and southwest Portugal contourite depositional system: Tectonic, sedimentary and paleoceanographic implications from IODP expedition 339 Marine Geology. ,vol. 377, pp. 7- 39 ,(2016) , 10.1016/J.MARGEO.2015.09.013
Veerle Ann Ida Huvenne, David Van Rooij, Ben De Mol, Mieke Thierens, Rory O’Donnell, Anneleen Foubert, None, Sediment dynamics and palaeo-environmental context at key stages in the Challenger cold-water coral mound formation: Clues from sediment deposits at the mound base Deep Sea Research Part I: Oceanographic Research Papers. ,vol. 56, pp. 2263- 2280 ,(2009) , 10.1016/J.DSR.2009.08.003
S. Toucanne, T. Mulder, J. Schönfeld, V. Hanquiez, E. Gonthier, J. Duprat, M. Cremer, S. Zaragosi, Contourites of the Gulf of Cadiz: A high-resolution record of the paleocirculation of the Mediterranean outflow water during the last 50,000 years Palaeogeography, Palaeoclimatology, Palaeoecology. ,vol. 246, pp. 354- 366 ,(2007) , 10.1016/J.PALAEO.2006.10.007
M. Canals, G. Lastras, R. Urgeles, J.L. Casamor, J. Mienert, A. Cattaneo, M. De Batist, H. Haflidason, Y. Imbo, J.S. Laberg, J. Locat, D. Long, O. Longva, D.G. Masson, N. Sultan, F. Trincardi, P. Bryn, Slope failure dynamics and impacts from seafloor and shallow sub-seafloor geophysical data: case studies from the COSTA project Marine Geology. ,vol. 213, pp. 9- 72 ,(2004) , 10.1016/J.MARGEO.2004.10.001