georefid:2007-128475SEDIS Publication Catalogue
ana.macario@awi.de
http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1130/G23917A.1<gco:CharacterString>Age constraints on the origin and growth history of a deep-water coral mound in the Northeast Atlantic drilled during Integrated Ocean Drilling Program Expedition 307</gco:CharacterString>2007-01-01publicationgeorefid:2007-128475doi:10.1130/G23917A.1Kano, AkihiroHiroshima University, Higashi-Hiroshima, JapanauthorFerdelman, Timothy G.Max-Planck-Institute for Marine Microbiology, Federal Republic of GermanyauthorWilliams, TrevorLamont-Doherty Earth Observatory, United StatesauthorHenriet, Jean-PierreUniversiteit Gent, BelgiumauthorIshikawa, TsuyoshiJapan Agency for Marine-Earth Science and Technology, JapanauthorKawagoe, NorikoUniversity of Tsukuba, JapanauthorTakashima, ChiduruUniversity of Massachusetts, United StatesauthorKakizaki, YoshihiroChengdu University of Technology, ChinaauthorAbe, KoheiauthorSakai, SaburoauthorBrowning, Emily L.authorLi XianghuiauthorAndres, M. S.authorBjerager, M.authorCragg, B. A.authorde Mol, B.authorDorschel, B.authorFoubert, A.authorFrank, T. D.authorFuwa, Y.authorGaillot, P.authorGharib, J. J.authorGregg, J. M.authorHuvenne, V. A. I.authorLeonide, P.authorMangelsdorf, K.authorMonteys, X.authorNovosel, I.authorO'Donnell, R.authorRueggeberg, A.authorSamarkin, V.authorSasaki, K.authorSpivack, A. J.authorTanaka, A.authorTitschack, J.authorvan Rooij, D.authorWheeler, A.authorGeological Society of America (GSA), Boulder, CO, United StatespublisherdocumentHardcopyGeology (Boulder)35 (11)1051-1054Sr isotope stratigraphy provides a new age model for the first complete section drilled through a deep-water coral mound. The 155-m-long section from Challenger Mound in the Porcupine Sea-bight, southwest of Ireland, is on Miocene siliciclastics and consists entirely of sediments bearing well-preserved cold-water coral Lophelia pertusa. The (super 87) Sr/ (super 86) Sr values of 28 coral specimens from the mound show an upward-increasing trend, correspond to ages from 2.6 to 0.5 Ma, and identify a significant hiatus from ca. 1.7 to 1.0 Ma at 23.6 m below seafloor. The age of the basal mound sediments coincides with the intensification of Northern Hemisphere glaciations that set up the modern stratification of the northeast Atlantic and enabled coral growth. Mound growth persisted throughout glacial-interglacial fluctuations, reached a maximum rate (24 cm/k.y.) ca. 2.0 Ma, and ceased at 1.7 Ma. Unlike other buried mounds in Porcupine Seabight, Challenger Mound was only partly covered during its growth interruption, and growth restarted ca. 1.0 Ma.completedStratigraphyalkaline earth metalsAnthozoaAtlantic OceanCenozoicChallenger MoundchemostratigraphyCnidariaCoelenteratacorescyclesdeep-water environmentExpedition 307glacial environmentglaciomarine environmentgrowth ratesIntegrated Ocean Drilling Programinterglacial environmentInvertebrataIODP Site 1316IODP Site 1317IODP Site 1318isotope ratiosisotopesLophelia pertusamarine environmentmarine sedimentsmetalsMiocenemoundsNeogeneNorth AtlanticNortheast Atlanticpaleo-oceanographypaleoecologyPleistocenePliocenePorcupine BasinQuaternaryreef builderssedimentsSr-87/Sr-86stable isotopesstrontiumTertiaryurn:org.iodp:exp:307urnlargerWorkCitationcampaignurn:org.iodp:exp:307:site:U1316urnlargerWorkCitationstudyurn:org.iodp:exp:307urnlargerWorkCitationcampaignurn:org.iodp:exp:307:site:U1317urnlargerWorkCitationstudyurn:org.iodp:exp:307urnlargerWorkCitationcampaignurn:org.iodp:exp:307:site:U1318urnlargerWorkCitationstudyurn:org.iodp:exp:307urnlargerWorkCitationcampaignEnglishgeoscientificInformation-11.4400-11.330051.230051.2600With GSA Data Repository Item 2007255