FN Archimer Export Format PT J TI X-ray imagery and physical core logging as a proxy of the content of sediment cores in cold-water coral mound provinces: a case study from Porcupine Seabight, SW of Ireland BT AF FOUBERT, A. VAN ROOIJ, D. BLAMART, D. HENRIET, J.-P. AS 1:1;2:1,2;3:2;4:1; FF 1:;2:;3:;4:; C1 Univ Ghent, Renard Ctr Marine Geol, B-9000 Ghent, Belgium. CEA, CNRS, UVSQ,Lab Mixte,IPSL, Lab Sci Climat & Environm, F-91198 Gif Sur Yvette, France. C2 UNIV GHENT, BELGIUM CEA, FRANCE IF 1.719 TC 27 UR https://archimer.ifremer.fr/doc/00233/34451/32916.pdf LA English DT Article CR IMAGES V LEG 1-MD114 IMAGES V LEG 4-MD114 MD 122 / WEPAMA MD 123 / GEOSCIENCES 1 BO Marion Dufresne DE ;X-ray imagery;physical core logging;carbonate mounds;Porcupine Basin;palaeoceanography AB Three provinces, characterized by the presence of carbonate mounds interpreted as cold-water coral banks have been reported in Porcupine Seabight, SW of Ireland and were recently subjected to many detailed studies. This contribution discusses the use of X-ray imagery and physical properties in deciphering palaeoceanographic, sedimentological and biological processes. Physical property core logging and X-ray imagery are used to identify and describe sedimentation regimes and so their respective palaeoceanographic and palaeoclimatological settings in two mound provinces, respectively the Belgica mound province and the Magellan mound province. Both provinces show at present time clear differences in the hydrodynamic environment. This study confirms that also during the past the oceanographic and sedimentological environment of both provinces differ clearly. Impacts of glacial-interglacial variations and locally derived ice rafting events (IRE), comparable with the North Atlantic Heinrich events (HE) have been recognized in both provinces. Moreover, the combination of X-ray imagery, magnetic susceptibility, gamma density and P-wave velocity makes it possible to estimate the coral content and coral distribution in unopened cores localized on top of carbonate mounds. A comparison between on-mound and off-mound cores in both provinces allowed revealing some mechanisms of mound evolution and coral growth versus time. PY 2007 PD FEB SO International Journal Of Earth Sciences SN 1437-3254 PU Springer VL 96 IS 1 UT 000243397100010 BP 141 EP 158 DI 10.1007/s00531-006-0087-5 ID 34451 ER EF