{"NOAAStudyId":"2611","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":"2004-07-01","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-2611.xml","doi":null,"earliestYearBP":14476448,"earliestYearCE":-14474498,"entryId":"noaa-ocean-2611","funding":[],"investigators":"Diester-Haass, L.; Meyers, P.A.; Bickert, T.","mostRecentYearBP":2894600,"mostRecentYearCE":-2892650,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2611","originalSource":null,"publication":[{"abstract":"Middle/late Miocene to early Pliocene sedimentary sequences along the continental margin of southwest Africa have changes that correspond to the carbonate crash (12-9 Ma) and biogenic bloom events (~7-4 Ma) described in the equatorial Pacific by Farrell et al. [1995]. To explore the origins of these changes, we analyzed the carbon and coarse fraction contents of sediments from ODP Sites 1085, 1086, and 1087 at a time resolution of 5 to 30 kyr. Several major drops in CaCO3 concentration between 12 and 9 Ma are caused by dilution from major increases in clastic input from the Oranje River during global sea level regressions. Abundant pyrite crystals and good preservation of fish debris reflect low oxygenation of bottom/pore waters. Regional productivity was enhanced during the time equivalent to the carbonate crash period. Higher benthic/planktic foraminiferal ratios indicate that CaCO3 dissolution at Site 1085 peaked between 9 to 7 Ma, which was after the global carbonate crash. This period of enhanced dissolution suggests that Site 1085 was located within a low-oxygen water mass that dissolved CaCO3 more easily than North Atlantic Deep Water, which began to bathe this site at 7 Ma. At 7 to 6 Ma, the onset of the biogenic bloom, increases and variations in total organic carbon and benthic foraminiferal accumulation rates show that paleoproductivity increased significantly above values observed during the carbonate crash period and fluctuated widely. We attribute the late Miocene paleoproductivity increase off southwest Africa to ocean-wide increases in nutrient supply and delivery.","author":null,"citation":"Diester-Haass, L., P.A. Meyers, and T. Bickert. 2004. Carbonate crash and biogenic bloom in the late Miocene: Evidence from ODP sites 1085, 1086, and 1087 in the Cape Basin, southeast Atlantic Ocean. Paleoceanography 19(1):PA1007.","edition":null,"identifier":null,"issue":null,"journal":"Paleoceanography","pages":null,"pubRank":"1","pubYear":2004,"reportNumber":null,"title":"Carbonate crash and biogenic bloom in the late Miocene: Evidence from ODP sites 1085, 1086, and 1087 in the Cape Basin, southeast Atlantic Ocean","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19242","geo":{"geoType":"Feature","geometry":{"coordinates":["-31.55","15.67"],"type":"POINT"},"properties":{"easternmostLongitude":"15.67","maxElevationMeters":"-781","minElevationMeters":"-781","northernmostLatitude":"-31.55","southernmostLatitude":"-31.55","westernmostLongitude":"15.67"}},"locationName":"Ocean>Atlantic Ocean>South Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4297","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>population abundance","earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>geochemistry","earth science>paleoclimate>paleocean>lithology","earth science>paleoclimate>paleocean>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/diester-haass2004","linkText":"diester-haass2004","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>physical properties","earth science>paleoclimate>paleocean>geochemistry","earth science>paleoclimate>paleocean>lithology","earth science>paleoclimate>paleocean>population abundance"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1086a-tab.txt","linkText":"odp1086a-tab.txt","urlDescription":"Alternate Format Data","variables":[{"cvAdditionalInfo":">63 microns","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"physical property>diameter>grain size>grain size class>sand"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"radiocarbon year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"benthic/(planktic plus benthic foraminifera)","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"biological material>organism>foraminifer>foraminiferal index>total benthic foraminifers"},{"cvAdditionalInfo":"fish debris","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"biological material>organism>fish>fish index"},{"cvAdditionalInfo":"40-63 micron fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"geological material>identified mineral>silicate mineral>mica group>glauconite"},{"cvAdditionalInfo":">63 microns","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"geological material>identified mineral>sulfide mineral>pyrite"},{"cvAdditionalInfo":"\"Shelf-derived particles (>63 micron) including coarse mollusc debris, relict shell material, decapods, phosphorite\"","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"physical property>diameter>grain size>grain size class>sand"},{"cvAdditionalInfo":"40-63 micron fraction; 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Mid- Miocene to early Pliocene sediment data from 3 ODP Sites in the southeast Atlantic Ocean, in the Cape Basin along the continental margin of southwest Africa. Time resolution of 5 to 30 kyr.","earliestYear":14476448,"earliestYearBP":14476448,"earliestYearCE":-14474498,"mostRecentYear":2894600,"mostRecentYearBP":2894600,"mostRecentYearCE":-2892650,"species":[],"timeUnit":"14C yr BP"}],"siteName":"ODP 1085"}],"studyCode":null,"studyName":"SE Atlantic Late Miocene Carbonate Crash and Biogenic Bloom Data from cruise ODP175","studyNotes":"","version":"1.0","xmlId":"1682"}