georefid:2003-028217SEDIS 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=2003-0282172000-01-01publicationgeorefid:2003-028217Taviani, M.Consiglio Nazionale delle Ricerche, Istituto di Geologia Marina, Bologna, ItalyauthorBeu, A. G.Institute of Geological and Nuclear Sciences, New ZealandauthorJonkers, H. A.British Antarctic Survey, United KingdomauthorUniversita di Siena. Dipartimento di Scienze della Terra, Siena, ItalypublisherdocumentHardcopyIn: Raine, J. I. (editor), Watkins, D. K. (editor), Studies from the Cape Roberts Project, Ross Sea, Antarctica; scientific report of CRP-2/2A; Part II, Paleontological studies for CRP-2/2A7 (4-5)513-526CRP-2/2A hole, drilled at 77.006 degrees S and 163.719 degrees E, about 14 km east of Cape Roberts, in the Ross Sea, reached 624 metres below sea floor and recovered a thick Miocene-Oligocene succession capped by a thin Pliocene-Quaternary cover. As many as 324 macrofossiliferous horizons have been identified in core CRP-2/2A, although the poor preservation state of most fossils prevents a full appreciation of their taxonomic identity. The macrofossils identified in core CRP-2/2A belong to Mollusca, Annelida, Cnidaria, Brachiopoda, Bryozoa, Echinodermata, Porifera and Vertebrata and represent an important source of palaeontological information on the former Antarctic biota. In particular, the CRP-2/2A drill core contains the most diverse Oligocene marine invertebrate macrofauna hitherto reported from East Antarctica. Early Miocene and Late Oligocene macrofossil assemblages are consistent with relatively cold (sub-polar) climatic conditions. One of the most significant findings in the drill core CRP-2/2A is the discovery of mussel assemblages dominated by modiolid bivalves within Early Oligocene sediments, suggestive of sea-bottom conditions characterized by high H (sub 2) S production. Modiolid bivalves are a strong indication of warmer-than-present climatic conditions. Many taxa are comparable to species recovered from coeval sediments drilled in the Ross Sea (DSDP Sites 270 and 272) and McMurdo Sound (CIROS-1).completedGeneral paleontologyStratigraphyAnnelidaAntarctic OceanAntarcticaAnthozoaassemblagesbiogeographybiostratigraphyBrachiopodaCape RobertsChordataCnidariaCoelenterataCRP-2/2A BoreholeDeep Sea Drilling ProjectDSDP Site 270DSDP Site 272faunal listfish scalesGastropodaglacial environmentInvertebrataLeg 28MolluscamorphologypaleoenvironmentPiscespreservationRoss SeaScleractiniaSouthern OceantaphonomytaxonomyVermesVertebrataVictoria LandVictoria Land BasinZoanthariaurn:org.iodp:exp:28urnlargerWorkCitationcampaignurn:org.iodp:exp:28:site:270urnlargerWorkCitationstudyurn:org.iodp:exp:28urnlargerWorkCitationcampaignurn:org.iodp:exp:28:site:272urnlargerWorkCitationstudyurn:org.iodp:exp:28urnlargerWorkCitationcampaignEnglishgeoscientificInformation163.4518-163.4518-77.0029-77.0029