{"data":{"id":"10.1594/pangaea.708055","type":"dois","attributes":{"doi":"10.1594/pangaea.708055","prefix":"10.1594","suffix":"pangaea.708055","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Kyte, Frank T","givenName":"Frank T","familyName":"Kyte","affiliation":[],"nameIdentifiers":[]},{"name":"Bohor, Bruce F","givenName":"Bruce F","familyName":"Bohor","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Compositions of Ni-rich magnesiowüstite and coexisting magnesioferrite spinel from sediments of DSDP Holes 86-577 and 91-596"}],"publisher":"PANGAEA","container":{},"publicationYear":1995,"subjects":[{"subject":"Drilling/drill rig","subjectScheme":"Method"},{"subject":"Leg86","subjectScheme":"Campaign"},{"subject":"Leg91","subjectScheme":"Campaign"},{"subject":"Glomar Challenger","subjectScheme":"Basis"},{"subject":"Deep Sea Drilling Project (DSDP)","subjectScheme":"Project"}],"contributors":[],"dates":[{"date":"1995","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":"10.1016/0016-7037(95)00343-6","relatedIdentifierType":"DOI"}],"relatedItems":[],"sizes":["2 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":"We have found trace inclusions of Ni-rich magnesiowüstite within grains of magnesioferrite spinel recovered from Cretaceous/Tertiary boundary sediments from DSDP Site 596, South Pacific (23°51.20'S, 169°39.27'W) and DSDP Site 577, North Pacific (3°6.51'N, 157°43.40'E). Measured compositions of these inclusions range from (Mg_0.85Ni_0.74Fe_0.17)O to (Mg_0.74Ni_0.09Fe_0.17)O. Coexisting magnesioferrite and magnesiowüstite can only crystallize from ultramafic, refractory, Mg-rich liquids with Mg/Si \u0026gt; 2 (atom ratio). Such liquid compositions cannot form as a result of fractional crystallization and are unknown to occur as a result of terrestrial igneous processes or meteoroid ablation. We infer that these minerals crystallized from liquid droplets that equilibrated with silicate vapor at high temperatures (probably \u0026gt;2300°C), resulting in fractionation of volatile SiO2 from more refractory MgO. The most plausible source of this high-temperature vapor is in the fireball of the major impact event that terminated the Cretaceous.","descriptionType":"Abstract"},{"description":"Supplement to: Kyte, Frank T; Bohor, Bruce F (1995): Nickel-rich magnesiowüstite in Cretaceous/Tertiary boundary spherules crystallized from ultramafic, refractory silicate liquids. Geochimica et Cosmochimica Acta, 59(23), 4967-4974","descriptionType":"Other"}],"geoLocations":[{"geoLocationBox":{"eastBoundLongitude":"157.7233","northBoundLatitude":"32.4418","southBoundLatitude":"-23.8533","westBoundLongitude":"-165.6545"}},{"geoLocationPlace":"North Pacific Ocean"},{"geoLocationPlace":"South Pacific 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