{"data":{"id":"10.1594/pangaea.724682","type":"dois","attributes":{"doi":"10.1594/pangaea.724682","prefix":"10.1594","suffix":"pangaea.724682","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Via, Rachael K","givenName":"Rachael K","familyName":"Via","affiliation":[],"nameIdentifiers":[]},{"name":"Thomas, Deborah J","givenName":"Deborah J","familyName":"Thomas","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Nd isotope data for ODP Leg 208 holes"}],"publisher":"PANGAEA","container":{},"publicationYear":2006,"subjects":[{"subject":"Drilling/drill rig","subjectScheme":"Method"},{"subject":"Leg208","subjectScheme":"Campaign"},{"subject":"Joides Resolution","subjectScheme":"Basis"},{"subject":"Ocean Drilling Program (ODP)","subjectScheme":"Project"}],"contributors":[],"dates":[{"date":"2006","dateType":"Issued"}],"language":"en","types":{"ris":"GEN","bibtex":"misc","citeproc":"article","schemaOrg":"Collection","resourceType":"Supplementary Publication Series of Datasets","resourceTypeGeneral":"Collection"},"relatedIdentifiers":[{"relationType":"IsSupplementTo","relatedIdentifier":"10.1130/g22545.1","relatedIdentifierType":"DOI"},{"relationType":"IsVariantFormOf","relatedIdentifier":"ftp://rock.geosociety.org/pub/reposit/2006/2006087.pdf","relatedIdentifierType":"URL"}],"relatedItems":[],"sizes":["3 datasets"],"formats":["application/zip"],"version":null,"rightsList":[{"rights":"Creative Commons Attribution 3.0 Unported","rightsUri":"https://creativecommons.org/licenses/by/3.0/legalcode","schemeUri":"https://spdx.org/licenses/","rightsIdentifier":"cc-by-3.0","rightsIdentifierScheme":"SPDX"}],"descriptions":[{"description":"The flow of deep-water masses is a key component of heat transport in the modern climate system, yet the role of deep-ocean heat transport during periods of extreme warmth is poorly understood. The present mode of meridional overturning circulation is characterized by deep-water formation in both the North Atlantic and the Southern Ocean. However, a different mode of meridional overturning circulation operated during the extreme greenhouse warmth of the early Cenozoic, during which time the Southern Ocean was the dominant region of deep-water formation. The combination of general global cooling and tectonic evolution of the Atlantic basins over the past ~55 m.y. ultimately led to the development of a mode of overturning circulation characterized by both Southern Ocean and North Atlantic deep-water sources. The change in deep-water circulation mode may, in turn, have affected global climate; however, unraveling the causes and consequences of this transition requires a better understanding of the timing of the transition. New Nd isotope data from the southeastern Atlantic Ocean indicate that the initial transition to a bipolar mode of deep-water circulation occurred in the early Oligocene, ca. 33 Ma. The likely cause of significant deep-water production in the North Atlantic was tectonic deepening of the sill separating the Greenland-Norwegian Sea from the North Atlantic.","descriptionType":"Abstract"},{"description":"Supplement to: Via, Rachael K; Thomas, Deborah J (2006): Evolution of Atlantic thermohaline circulation: Early Oligocene onset of deep-water production in the North Atlantic. Geology 2006, 34(6), 441-444","descriptionType":"Other"}],"geoLocations":[{"geoLocationBox":{"eastBoundLongitude":"2.84551","northBoundLatitude":"-27.186","southBoundLatitude":"-28.53283","westBoundLongitude":"1.577"}},{"geoLocationPlace":"Walvis Ridge, Southeast Atlantic 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