georefid:1986-018189SEDIS 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=1986-018189<gco:CharacterString>Near-synchroneity of New Zealand alpine glaciations and Northern Hemisphere continental glaciations during the past 750 kyr</gco:CharacterString>1985-01-01publicationgeorefid:1986-018189Nelson, C. S.Univ. Waikato, Sch. Sci., Hamilton, New ZealandauthorHendy, C. H.authorJarrett, G. R.authorCuthbertson, A. M.authorMacmillan Journals, London, United KingdompublisherdocumentHardcopyNature (London)318 (6044)361-363The Brunhes magnetochron (0-730 kyr) at Deep Sea Drilling Project Site 594 off eastern South Island, New Zealand, comprises up to approx 100 m of alternating units of pelagic and hemipelagic ooze formed during interglacial and glacial periods respectively. The youngest hemipelagic interval corresponds to glacial isotope stage 2 and can be correlated with extensive glacial and glacio-fluvial deposits of the late Last Glaciation (approx 27-13 kyr BP) on South Island. Inferring the same genetic link for the other hemipelagic sediment units down core, we show here that as many as 12 major episodes of expanded alpine glaciation have occurred on South Island in the past 730 kyr. Each of these glacial episodes coincided with a period of significant (super 18) O enrichment (+2%) in the core resulting from changes in ocean isotope composition associated with major growth phases of the Northern Hemisphere ice sheets. The inferred history of alpine glaciations on this remote South Pacific island appears to be closely phase-locked (+ or -3 kyr) to world-wide climate changes.completedQuaternary geologyalpine environmentAustralasiaCenozoicchangeschronologyclastic sedimentscorescyclesDeep Sea Drilling ProjectDSDP Site 594environmental analysisgeomorphologyglacial environmentglacial geologyglaciationglobalinterglacial environmentIPODisotopesLeg 90marine sedimentsNew ZealandNorthern HemisphereO-18/O-16oceanographyoozeoxygenPacific OceanpaleoclimatologyPleistoceneQuaternarysedimentsSouth Islandstable isotopesterrestrial environmenttexturesupper PleistoceneWest Pacificurn:org.iodp:exp:90urnlargerWorkCitationcampaignurn:org.iodp:exp:90:site:594urnlargerWorkCitationstudyurn:org.iodp:exp:90urnlargerWorkCitationcampaignEnglishgeoscientificInformation174.5000174.5700-45.3125-45.3124