georefid:2011-027988SEDIS Publication Catalogue
ana.macario@awi.de
http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-07-06T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2011-027988<gco:CharacterString>Emergence of the Isthmus of Panama links to Northern Hemisphere glaciation; relation to new definition of the "Quaternary"</gco:CharacterString>2010-01-01publicationgeorefid:2011-027988Sato, TokiyukiAkita University, Institute of Applied Earth Sciences, Akita, JapanauthorJapan Association for Quaternary Research, Tokyo, JapanpublisherdocumentHardcopyIn: Ueki, Takeyuki (prefacer), Endo, Kunihiko (prefacer), The 2009 symposium on Environmental change and tectonics around the base of the newly defined Quaternary49 (5)283-292Calcareous nannofossil assemblages found in samples from the Arctic and North Pacific Oceans indicate that heavy Northern Hemisphere glaciation occurred in 2.75 Ma, based on the abundant occurrence of cold water nanno-fossil Coccolithus pelagicus and the drastic increase of ice rafted debris in these areas. Final closure of the Central American Sea Way, indicated by the biogeography of calcareous nannofossils in the Caribbean and the eastern Pacific, occurred at this time. These results indicate that the emergence of the Isthmus of Panama resulted in the Northern Hemisphere glaciation, and also led to both the Quaternary-style ocean circulation and nannofossil biogeography in 2:75 Ma.completedQuaternary geologyalgaeArctic OceanassemblagesAtlantic OceanbiogeographyCenozoicCoccolithophoraceaeCoccolithusCoccolithus pelagicusEast PacificEmperor SeamountsExpedition 303Expeditions 303/306glaciationIntegrated Ocean Drilling ProgramIODP Site U1308Isthmus of PanamaLeg 145Leg 151lower Pleistocenemarine environmentmicrofossilsMid-Atlantic RidgeNeogeneNorth AtlanticNorth PacificNortheast AtlanticNortheast PacificNorthwest PacificOcean Drilling ProgramODP Site 881ODP Site 882ODP Site 883ODP Site 887ODP Site 911Pacific OceanpaleoclimatologypaleoenvironmentpaleogeographyPlantaePleistocenePliocenequantitative analysisQuaternaryTertiaryupper PlioceneWest PacificYermak Plateauurn:org.iodp:exp:303urnlargerWorkCitationcampaignurn:org.iodp:exp:145urnlargerWorkCitationcampaignurn:org.iodp:exp:151urnlargerWorkCitationcampaignurn:org.iodp:exp:303:site:U1308urnlargerWorkCitationstudyurn:org.iodp:exp:303urnlargerWorkCitationcampaignurn:org.iodp:exp:145:site:881urnlargerWorkCitationstudyurn:org.iodp:exp:145urnlargerWorkCitationcampaignurn:org.iodp:exp:145:site:882urnlargerWorkCitationstudyurn:org.iodp:exp:145urnlargerWorkCitationcampaignurn:org.iodp:exp:145:site:883urnlargerWorkCitationstudyurn:org.iodp:exp:145urnlargerWorkCitationcampaignurn:org.iodp:exp:145:site:887urnlargerWorkCitationstudyurn:org.iodp:exp:145urnlargerWorkCitationcampaignurn:org.iodp:exp:151:site:911urnlargerWorkCitationstudyurn:org.iodp:exp:151urnlargerWorkCitationcampaignJapanesegeoscientificInformation-148.2647167.360047.060680.2829