{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361418518620577408.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.epsl.2014.11.020"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0012821X14007122?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0012821X14007122?httpAccept=text/plain"}}],"dc:title":[{"@value":"Late formation of a comet Wild 2 crystalline silicate particle, Pyxie, inferred from Al–Mg chronology of plagioclase"}],"description":[{"notation":[{"@value":"We examined the Al–Mg isotope systematics of plagioclase in a FeO-poor ferromagnesian Wild 2 particle (C2092,7,81,1,0; named Pyxie) using a ∼2 μm spot. Three analyses show average 27Al/24Mg ratio of ∼65 and excess δ26Mg⁎ value of +0.1±4.5‰+0.1±4.5‰ (2σ), indicating no resolvable 26Mg excess in the particle. The inferred initial (26Al/27Al)0 ratio of plagioclase in Pyxie is estimated as (−0.6±4.5)×10−6(−0.6±4.5)×10−6 with an upper limit of 4×10−64×10−6. The result is very similar to that of the FeO-rich ferromagnesian particle “Iris” (Ogliore et al., 2012). Assuming homogeneous distribution of 26Al in the early solar system, Pyxie formed at least 2.6 Ma after the oldest Ca–Al-rich inclusions. This minimum formation age is marginally younger than formation ages of most chondrules in type ∼3.0 chondrites but comparable with those of Mg# < 98 chondrules in CR3 chondrites. Considered in conjunction with similar oxygen isotope ratios between Pyxie (and Iris) and Mg# < 98 chondrules in CR3 chondrites, it is inferred that the ferromagnesian Wild 2 particles and Mg# < 98 chondrules in CR3 chondrites formed late in local disk environments that had similar oxygen isotope ratios and redox states."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381418518620577409","@type":"Researcher","foaf:name":[{"@value":"Daisuke Nakashima"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418518620577413","@type":"Researcher","foaf:name":[{"@value":"Takayuki Ushikubo"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418518620577408","@type":"Researcher","foaf:name":[{"@value":"Noriko T. Kita"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418518620577412","@type":"Researcher","foaf:name":[{"@value":"Michael K. Weisberg"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418518620577411","@type":"Researcher","foaf:name":[{"@value":"Michael E. Zolensky"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418518620577410","@type":"Researcher","foaf:name":[{"@value":"Denton S. Ebel"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"0012821X"}],"prism:publicationName":[{"@value":"Earth and Planetary Science Letters"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2015-01","prism:volume":"410","prism:startingPage":"54","prism:endingPage":"61"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0012821X14007122?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0012821X14007122?httpAccept=text/plain"}],"createdAt":"2014-12-05","modifiedAt":"2018-09-27","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360009142423712896","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Correlated isotopic and chemical evidence for condensation origins of olivine in comet 81P/Wild 2 and in AOAs from CV and CO chondrites"}]},{"@id":"https://cir.nii.ac.jp/crid/1360306906069332864","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Chondrule-like objects and a Ca-Al-rich inclusion from comets or comet-like icy bodies"}]},{"@id":"https://cir.nii.ac.jp/crid/1360580232386695680","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Antarctic micrometeorite composed of <scp>CP</scp> and <scp>CS IDP</scp>‐like material: A micro‐breccia originated from a partially ice‐melted comet‐like small body"}]},{"@id":"https://cir.nii.ac.jp/crid/1360588380152140672","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Late Pebble Accretion of Comet 81P/Wild 2 Nucleus: Evidence from a Plagioclase-bearing Chondrule Fragment, Pyxie"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848657096944256","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The 26Al-26Mg systematics of FeO-rich chondrules from Acfer 094: Two chondrule generations distinct in age and oxygen isotope ratios"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842057867776","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Analytical protocols for Phobos regolith samples returned by the Martian Moons eXploration (MMX) mission"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1016/j.epsl.2014.11.020"},{"@type":"OPENAIRE","@value":"doi_dedup___::68fc9a50686e1ba7258a70c005877842"},{"@type":"CROSSREF","@value":"10.1016/j.gca.2020.09.036_references_DOI_XyoCg5Z8sx2yVLJVUPJhHpQc2d"},{"@type":"CROSSREF","@value":"10.1016/j.gca.2024.07.038_references_DOI_XyoCg5Z8sx2yVLJVUPJhHpQc2d"},{"@type":"CROSSREF","@value":"10.1186/s40623-021-01438-9_references_DOI_XyoCg5Z8sx2yVLJVUPJhHpQc2d"},{"@type":"CROSSREF","@value":"10.1111/maps.13919_references_DOI_XyoCg5Z8sx2yVLJVUPJhHpQc2d"},{"@type":"CROSSREF","@value":"10.3847/1538-4357/ad55cc_references_DOI_XyoCg5Z8sx2yVLJVUPJhHpQc2d"},{"@type":"CROSSREF","@value":"10.1016/j.gca.2019.02.020_references_DOI_XyoCg5Z8sx2yVLJVUPJhHpQc2d"}]}