{"data":{"id":"10.1594/pangaea.711221","type":"dois","attributes":{"doi":"10.1594/pangaea.711221","prefix":"10.1594","suffix":"pangaea.711221","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Manheim, Frank T","givenName":"Frank T","familyName":"Manheim","nameIdentifiers":[{"schemeUri":"https://orcid.org","nameIdentifier":"https://orcid.org/0000-0003-4005-4524","nameIdentifierScheme":"ORCID"}],"affiliation":[]},{"name":"Bischoff, James L","givenName":"James L","familyName":"Bischoff","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Composition of drilled sediments and pore waters from the continental slope of the Northern Gulf of Mexico"}],"publisher":"PANGAEA","container":{},"publicationYear":1969,"subjects":[{"subject":"Drilling/drill rig","subjectScheme":"Method"},{"subject":"Eureka-65-67","subjectScheme":"Campaign"},{"subject":"MV Eureka","subjectScheme":"Basis"},{"subject":"Deep Sea Drilling Project (DSDP)","subjectScheme":"Project"},{"subject":"Ocean Drilling Program (ODP)","subjectScheme":"Project"}],"contributors":[],"dates":[{"date":"1969","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(69)90040-0","relatedIdentifierType":"DOI"}],"relatedItems":[],"sizes":["4 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":"Pore waters were analyzed from 6 holes drilled from M.V. “Eureka” as a part of the Shell Oil Co. deeper offshore study. The holes were drilled in water depths of 600-3000 ft. (approximately 180-550 m) and penetrated up to 1000 ft. (300 m) of Pliocene-Recent clayey sediments. Salt and anhydrite caprock was encountered in one diapiric structure on the continental slope.Samples from holes drilled near diapiric structures showed systematic increases of pore-water salinity with depth, suggestive of salt diffusion from underlying salt plugs. Anomalous concentrations of K and Br indicate that at least one plug contains late-stage evaporite minerals. Salinities approaching halite saturation were observed.Samples from holes away from diapiric structures showed little change in pore-water chemistry, except for loss of SO4 and other variations attributable to early-stage diagenetic reactions with enclosing sediments. Thus, increased salt concentrations in even shallow sediments from this part of the Gulf appear to provide an indicator of salt masses at depth.","descriptionType":"Abstract"},{"description":"Supplement to: Manheim, Frank T; Bischoff, James L (1969): Geochemistry of pore waters from the Shell Oil Company drill holes on the continental slope of the northern Gulf of Mexico. Chemical Geology, 4, 63-82","descriptionType":"Other"}],"geoLocations":[{"geoLocationBox":{"eastBoundLongitude":"-89.6167","northBoundLatitude":"28.3333","southBoundLatitude":"27.5333","westBoundLongitude":"-92.8"}},{"geoLocationPlace":"Gulf of 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