FN Archimer Export Format PT J TI Therese Mound: a case study of coral bank development in the Belgica Mound Province, Porcupine Seabight BT AF DE MOL, Ben KOZACHENKO, M WHEELER, Andy ALVARES, Hugo HENRIET, Jean-Pierre OLU, Karine AS 1:1,2;2:3;3:4;4:5;5:1;6:6; FF 1:;2:;3:;4:;5:;6:PDG-DOP-DCB-EEP-LEP; C1 Univ Barcelona, GRC Geociencies Marines, Barcelona, Spain. Univ Ghent, Renard Ctr Marine Geol, B-9000 Ghent, Belgium. Univ Coll Cork, Environm Res Inst, Coastal & Marine Resources Ctr, Cork, Ireland. Univ Coll Cork, Dept Geol, Cork, Ireland. Univ N Wales, Sch Ocean Sci, Bangor, Gwynedd, Wales. IFREMER, Dept Environm Profond, F-29280 Plouzane, France. C2 UNIV BARCELONA, SPAIN UNIV GHENT, BELGIUM UNIV COLL CORK (UCC), IRELAND UNIV COLL CORK (UCC), IRELAND UNIV N WALES, UK IFREMER, FRANCE SI BREST SE PDG-DOP-DCB-EEP-LEP IN WOS Ifremer jusqu'en 2018 copubli-europe IF 1.719 TC 44 UR https://archimer.ifremer.fr/doc/2007/publication-2307.pdf LA English DT Article CR CARACOLE BO L'Atalante DE ;Carbonate mounds;Cold water corals;Lophelia pertusa;Porcupine Seabight;Coral banks;Belgica mound province;Therese Mound AB High-resolution seismic profiles, swath bathymetry, side-scan sonar data and video imageries are analysed in this detailed study of five carbonate mounds from the Belgica mound province with special emphasis on the well-surveyed Therese Mound. The selected mounds are located in the deepest part of the Belgica mound province at water depths of 950 m. Seismic data illustrate that the underlying geology is characterised by drift sedimentation in a general northerly flowing current regime. Sigmoidal sediment bodies create local slope breaks on the most recent local erosional surface, which act as the mound base. No preferential mound substratum is observed, neither is there any indication for deep geological controls on coral bank development. Seismic evidence suggests that the start-up of the coral bank development was shortly after a major erosional event of Late Pliocene-Quaternary age. The coral bank geometry has been clearly affected by the local topography of this erosional base and the prevailing current regime. The summits of the coral banks are relatively flat and the flanks are steepest on their upper slopes. Deposition of the encased drift sequence has been influenced by the coral bank topography. Sediment waves are formed besides the coral banks and are the most pronounced bedforms. These seabed structures are probably induced by bottom current up to 1 m/s. Large sediment waves are colonised by living corals and might represent the initial phase of coral bank development. The biological facies distribution of the coral banks illustrate a living coral cap on the summit and upper slope and a decline of living coral populations toward the lower flanks. The data suggest that the development of the coral banks in this area is clearly an interaction between biological growth processes and drift deposition both influenced by the local topography and current regime. PY 2007 PD FEB SO International Journal of Earth Sciences SN 1437-3254 PU Springer VL 96 IS 1 UT 000243397100008 BP 103 EP 120 DI 10.1007/s00531-005-0496-x ID 2307 ER EF