{"NOAAStudyId":"2627","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2005-01-01","dataPublisher":"NOAA","dataType":"PALEOCEANOGRAPHY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoceanography","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-ocean-2627.xml","doi":null,"earliestYearBP":40589788,"earliestYearCE":-40587838,"entryId":"noaa-ocean-2627","funding":[],"investigators":"Anderson, L.D.; Delaney, M.L.","mostRecentYearBP":33065034,"mostRecentYearCE":-33063084,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2627","originalSource":null,"publication":[{"abstract":"The Agulhas Ridge, off the tip of Africa between the Atlantic and Indian Oceans, is ideally located to capture the evolution of Paleogene-early Neogene circulation patterns associated with global cooling. Multiproxy records of productivity (biogenic barium (Baex), opal, CaCO3 mass accumulation rates (MARs)), nutrient and organic carbon burial (reactive phosphorus (Pr) MARs), and redox state of deep waters (U enrichment) from Ocean Drilling Program (ODP) Site 1090 reflect hydrographic shifts in this region between the middle Eocene and early Oligocene (?39–33 Ma). Several peaks in increased export productivity and burial of organic matter occurred within the late Eocene (?36.5, ?34, and ?33.7 Ma), which along with surface hydrologic conditions favoring opaline organisms over calcareous organisms could have aided in the draw down of pCO2 to a threshold level that facilitated large ice sheet development on Antarctica in the earliest Oligocene. Our multiproxy approach illustrates the importance of vertical as well as spatial hydrographic reorganization in amplifying or driving climatic cooling of the middle Eocene to early Oligocene by facilitating increases in the relative or absolute burial of organic carbon.","author":null,"citation":"Anderson, L.D. and M.L. Delaney. 2005. Middle Eocene to early Oligocene paleoceanography from Agulhas Ridge, Southern Ocean (Ocean Drilling Program Leg 177, Site 1090). Paleoceanography 20, PA1013. doi:10.1029/2004PA001043","edition":null,"identifier":null,"issue":null,"journal":"Paleoceanography","pages":null,"pubRank":"1","pubYear":2005,"reportNumber":null,"title":"Middle Eocene to early Oligocene paleoceanography from Agulhas Ridge, Southern Ocean (Ocean Drilling Program Leg 177, Site 1090)","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19256","geo":{"geoType":"Feature","geometry":{"coordinates":["-42.908333","8.9"],"type":"POINT"},"properties":{"easternmostLongitude":"8.9","maxElevationMeters":"-3702","minElevationMeters":"-3702","northernmostLatitude":"-42.908333","southernmostLatitude":"-42.908333","westernmostLongitude":"8.9"}},"locationName":"Ocean>Atlantic Ocean>South Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4325","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>physical properties","earth 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P total = P reactive + P detrital. Ptd = P conc. from total digestion of the sediment.","earliestYear":40589788,"earliestYearBP":40589788,"earliestYearCE":-40587838,"mostRecentYear":33065034,"mostRecentYearBP":33065034,"mostRecentYearCE":-33063084,"species":[],"timeUnit":"14C yr BP"}],"siteName":"ODP 1090"}],"studyCode":null,"studyName":"Southern Ocean Middle Eocene to Early Oligocene Paleoceanographic Data ","studyNotes":null,"version":"1.0","xmlId":"1697"}