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| Fentimen, Robin; Feenstra, Eline; Ruggeberg, Andres; Hall, Efraim; Rime, Valentin; Vennemann, Torsten; Hajdas, Irka; Rosso, Antonietta; Van Rooij, David; Adatte, Thierry; Vogel, Hendrik; Frank, Norbert; Krengel, Thomas; Foubert, Anneleen. |
| This study provides a detailed reconstruction of climatic events affecting a cold-water coral mound located within the East Melilla Coral Province (Southeast Alboran Sea) over the last 300 ky. Based on benthic foraminiferal assemblages, macrofaunal quantification, grain size analysis, sediment geochemistry, and foraminiferal stable isotope compositions, a reconstruction of environmental conditions prevailing in the region is proposed. The variations in planktonic and benthic δ18O values indicate that cold-water coral mound formation follows global climatic variability. Cold-water corals develop during both interglacial and glacial periods, although interglacial conditions would have allowed better proliferation. Environmental conditions during glacial... |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00635/74734/74724.pdf |
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| Frank, Norbert; Ricard, Estelle; Lutringer-paquet, Audrey; Van Der Land, Cees; Colin, Christophe; Blamart, Dominique; Foubert, Anneleen; Van Rooij, David; Henriet, Jean-pierre; De Haas, Henk; Van Weering, Tjeerd. |
| U-series dating of constructional cold-water corals is a powerful tool to reconstruct the evolution of corals on carbonate mounds. Here we have investigated the time framework of corals such as Lophelia pertusa and Madrepora oculata on five different mound settings of the eastern North Atlantic (on Rockall Bank and in Porcupine Seabight), sampled at variable depth and location (610-880 m water depth). We have found that the past 11 ka reflect a period generally favourable for coral development. We further determined local mound growth rates and identified mound surface erosion (framework collapse) during times of active coral framework construction. "Local" vertical mound growth rates vary between less than 5 cm ka(-1) and up to 220 cm ka(-1). We interpret... |
| Tipo: Text |
Palavras-chave: Carbonate mound; Deep sea corals; U-series dating; Climate; Rockall Bank; Porcupine Seabight. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00219/33060/31574.pdf |
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