georefid:2006-059609SEDIS 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=2006-0596092002-01-01publicationgeorefid:2006-059609Krissek, L. A.Ohio State University, Department of Geological Sciences, Columbus, OH, United StatesauthorSt. John, K. E. K.Appalachian State University, United StatesauthorGeological Society of Denmark, Copenhagen, DenmarkpublisherdocumentHardcopyBulletin of the Geological Society of Denmark49, Part 179-89A 1 m.y. ice-rafted debris record (IRD) was developed for Ocean Drilling Program site 919, located in the western Irminger Basin. Compositional analyses of the IRD indicate that the major source regions for IRD found off SE Greenland were the Precambrian igneous and meta-igneous crystalline basement (predominantly gneiss and granite) of southeast Greenland and the Tertiary flood basalts located further north along the East Greenland coast. Temporal covariations in the IRD mass accumulation rates (MARs) of provenance-distinctive grain types suggest that these source areas experienced similar iceberg release histories during the Pleistocene. In contrast, no distinct relationship can be drawn between peaks in the IRD MAR record and oxygen-isotope defined glacial-interglacial cycles, suggesting that the history of IRD input off SE Greenland since 1 Ma was dominated by local, rather than global, climatic and distributional controls.completedQuaternary geologyArctic regionAtlantic OceanbasaltsCenozoicdebrisEast Greenlandflood basaltsglacial geologyglacial transportGreenlandice raftingicebergsigneous rocksIrminger Basinisotope ratiosisotopesLeg 152North AtlanticO-18/O-16Ocean Drilling ProgramODP Site 919oxygenpaleoclimatologyPleistoceneproductionprovenanceQuaternarysediment transportstable isotopesterrigenous materialsTertiaryvolcanic rocksvolumeurn:org.iodp:exp:152urnlargerWorkCitationcampaignurn:org.iodp:exp:152:site:919urnlargerWorkCitationstudyurn:org.iodp:exp:152urnlargerWorkCitationcampaignEnglishgeoscientificInformation-37.2737-37.273762.401262.4012