{"xmlId":"82264","NOAAStudyId":"41239","studyName":"Iberian Margin Core-top Sr and Nd Isotope Data during the Holocene","doi":"https://doi.org/10.25921/bc7w-hc39","uuid":"b937016b-79e8-4981-b41c-6d2c4ffdfd4c","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"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."},"dataType":"PALEOCEANOGRAPHY","investigators":"Campderr�s, S.; Pena, L.D.; Garcia-Solsona, E.; Paredes-Paredes, E.; Catal�, A.; Frigola, J.; Haghipour, N.; Cacho, I.","investigatorDetails":[{"firstName":"Sara","lastName":"Campderr�s","initials":"S.","orcId":"0009-0000-7379-6853"},{"firstName":"Leopoldo","lastName":"Pena","initials":"L.D.","orcId":"0000-0001-6414-6293"},{"firstName":"Ester","lastName":"Garcia-Solsona","initials":"E.","orcId":"0000-0003-4136-9165"},{"firstName":"Eduardo","lastName":"Paredes-Paredes","initials":"E.","orcId":"0000-0002-3991-7938"},{"firstName":"Albert","lastName":"Catal�","initials":"A.","orcId":"0000-0001-9967-6120"},{"firstName":"Jaime","lastName":"Frigola","initials":"J.","orcId":"0000-0002-8923-0827"},{"firstName":"Negar","lastName":"Haghipour","initials":"N.","orcId":"0000-0001-8223-0536"},{"firstName":"Isabel","lastName":"Cacho","initials":"I.","orcId":"0000-0002-6512-0770"}],"version":"1.0","funding":[{"fundingAgency":"Ministerio de Ciencia, Inovacion y Universidades (Spain)","fundingGrant":"MORIA (PID2022-138010OB-I00), TRANSMOW (PID2019-105523RB-I00)"}],"studyNotes":"This study uses strontium and neodymium isotopic data (87Sr/86Sr and eNd) measured on core-top sediments to trace the provenance of material deposited along the Atlantic Iberian Margin. To further constrain the dominant sediment transport dynamics and identify areas of modern deposition and erosion, we combine these isotopic measurements with radiocarbon (14C) dating of planktonic foraminifera from the same core tops distributed along the margin. Depths range from -479m to -1997m\r\n      Provided Keywords: Iberian Margin, Mediterranean Outflow Water, Neodymium isotopes, Strontium isotopes, Radiocarbon dating","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/41239","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-ocean-41239.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-ocean-41239.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/paleoceanography","studyCode":null,"scienceKeywords":["Earth Surface Conditions Reconstruction","Atmospheric and Oceanic Circulation Patterns Reconstruction"],"reconstruction":"N","contributionDate":"2025-04-25","entryId":"noaa-ocean-41239","earliestYearBP":11042,"mostRecentYearBP":383,"earliestYearCE":-9092,"mostRecentYearCE":1567,"publication":[{"author":{"name":"Campderr�s, Sara; Pena, Leopoldo D.; Garcia-Solsona, Ester; Paredes-Paredes, Eduardo; Catal�, Albert; Frigola, Jaime; Haghipour, Negar; Cacho, Isabel"},"pubYear":2026,"title":"Sediment provenance and transport pathways along the Atlantic Iberian Margin","journal":"Earth and Planetary Science Letters","volume":"676","edition":null,"issue":null,"pages":null,"reportNumber":"119788","citation":"Campderr�s, Sara; Pena, Leopoldo D.; Garcia-Solsona, Ester; Paredes-Paredes, Eduardo; Catal�, Albert; Frigola, Jaime; Haghipour, Negar; Cacho, Isabel. 2026. Sediment provenance and transport pathways along the Atlantic Iberian Margin. Earth and Planetary Science Letters, 676, 119788. doi: 10.1016/j.epsl.2025.119788","type":"publication","identifier":{"type":"doi","id":"10.1016/j.epsl.2025.119788","url":"http://dx.doi.org/10.1016/j.epsl.2025.119788"},"abstract":"The Atlantic Iberian margin is a dynamic region where oceanographic processes interact with continental sediment, influencing transport and deposition. To identify sediment sources and dominant transport dynamics we combine 87Sr/86Sr and �Nd measurements on terrigenous sediments and 14C dating of planktonic foraminifera from core-tops along the margin. We present a new dataset of Sr-Nd isotope data from the Iberian Peninsula to characterize the isotopic composition of main river basins, considered potential sediment sources alongside African dust. By solving a ternary isotope mixing system, combined with a new statistical method to account for endmember isotopic distributions, we quantify the relative contribution of source areas to our samples. Our results reveal: 1) the margin is characterized by three isotopically distinct regions, 2) African dust is an important component of the terrigenous sediment (<60 %), 3) regional differences in isotopic values reflect the influence of major river discharges: Guadalquivir in the south, Tagus in the centre, and Douro in the north, and 4) sediment transport follows a net northward direction along-slope. This sediment transport is attributed to the northward-flowing Mediterranean Outflow Water (MOW), which entrains and redistributes sediments along-slope. This is further supported by foraminifera 14C results, showing older radiocarbon ages along the MOW path, indicating sediment erosion. In contrast, younger radiocarbon ages are consistently found below MOW depths. The combined 87Sr/86Sr, �Nd and 14C data suggest that MOW flow reduces sediment deposition along its path, transporting sediments northward, where it predominantly settles below the interface between MOW and the underlying North East Atlantic Deep Water.","pubRank":"1"}],"site":[{"NOAASiteId":"60968","siteName":"Iberian Margin","siteCode":null,"mappable":"N","locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","geo":{"geoType":"Feature","geometry":{"type":"POLYGON","coordinates":["35.97","44.07","-10.71","-5.45"]},"properties":{"southernmostLatitude":"35.97","northernmostLatitude":"44.07","westernmostLongitude":"-10.71","easternmostLongitude":"-5.45","minElevationMeters":null,"maxElevationMeters":null}},"paleoData":[{"dataTableName":"TRANSMOW core-top Sr Nd Campderros2025","NOAADataTableId":"55466","earliestYear":11042,"mostRecentYear":383,"timeUnit":"calendar year before 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