{"data":{"id":"10.1594/pangaea.704818","type":"dois","attributes":{"doi":"10.1594/pangaea.704818","prefix":"10.1594","suffix":"pangaea.704818","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Spivack, Arthur J","givenName":"Arthur J","familyName":"Spivack","affiliation":[],"nameIdentifiers":[]},{"name":"Staudigel, Hubert","givenName":"Hubert","familyName":"Staudigel","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Elemental data for composites from DSDP Sites 417A, 417D, and 418A"}],"publisher":"PANGAEA","container":{},"publicationYear":1994,"subjects":[{"subject":"Drilling/drill rig","subjectScheme":"Method"},{"subject":"Leg51","subjectScheme":"Campaign"},{"subject":"Leg52","subjectScheme":"Campaign"},{"subject":"Glomar Challenger","subjectScheme":"Basis"},{"subject":"Deep Sea Drilling Project (DSDP)","subjectScheme":"Project"}],"contributors":[],"dates":[{"date":"1994","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":"10.1016/0009-2541(94)90189-9","relatedIdentifierType":"DOI"}],"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":"While the input of river-alkalinity into seawater is relatively well known, the complementary acidity production is poorly understood. Using the major-element budget of seafloor alteration of the upper 500 m of 120-Ma-old oceanic crust at DSDP/ODP Sites 417A, 417D and 418A in the central western Atlantic, we estimate the acidity flux associated with the low-temperature weathering of the upper oceanic crust. The acidity flux is calculated based on major-element fluxes and charge-balance considerations. The relevant chemical fluxes from seawater to the upper crust are 4.1+-0.1; 1.4+-1.4; 2.2+-0.6 and -12+-2 10**11 mol/yr for K, Mg, Na and silicate-Ca, respectively. The associated acidity flux is (3.5+-3)10**11 eq/y. Relative to continental weathering, these fluxes are significant for K and silicate-Ca, but are minor for Na, Mg and acidity. Thus, riverine fluxes of alkalinity are not significantly balanced by acidity fluxes from low-temperature upper ocean crust alteration.","descriptionType":"Abstract"},{"description":"Supplement to: Spivack, Arthur J; Staudigel, Hubert (1994): Low-temperature alteration of the upper oceanic crust and the alkalinity budget of seawater. Chemical Geology, 115(3), 239-247","descriptionType":"Other"}],"geoLocations":[{"geoLocationBox":{"eastBoundLongitude":"-68.0413","northBoundLatitude":"25.1115","southBoundLatitude":"25.035","westBoundLongitude":"-68.0573"}},{"geoLocationPlace":"North Atlantic/CONT 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