{"@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/1361699994157321344.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1111/j.1945-5100.2004.tb00095.x"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2004.tb00095.x"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2004.tb00095.x"}}],"dc:title":[{"@value":"High‐pressure phases in shock‐induced melt veins of the Umbarger L6 chondrite: Constraints of shock pressure"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p><jats:bold>Abstract—</jats:bold> We report a previously undocumented set of high‐pressure minerals in shock‐induced melt veins of the Umbarger L6 chondrite. High‐pressure minerals were identified with transmission electron microscopy (TEM) using selected area electron diffraction and energy‐dispersive X‐ray spectroscopy. Ringwoodite (Fa<jats:sub>30</jats:sub>), akimotoite (En<jats:sub>11</jats:sub>Fs<jats:sub>89</jats:sub>), and augite (En<jats:sub>42</jats:sub>Wo<jats:sub>33</jats:sub>Fs<jats:sub>25</jats:sub>) were found in the silicate matrix of the melt vein, representing the crystallization from a silicate melt during the shock pulse. Ringwoodite (Fa<jats:sub>27</jats:sub>) and hollandite‐structured plagioclase were also found as polycrystalline aggregates in the melt vein, representing solid state transformation or melting with subsequent crystallization of entrained host rock fragments in the vein. In addition, Fe<jats:sub>2</jats:sub>SiO<jats:sub>4</jats:sub>‐spinel (Fa<jats:sub>66</jats:sub>‐Fa<jats:sub>99</jats:sub>) and stishovite crystallized from a FeO‐SiO<jats:sub>2</jats:sub>‐rich zone in the melt vein, which formed by shock melting of FeO‐SiO<jats:sub>2</jats:sub>‐rich material that had been altered and metasomatized before shock. Based on the pressure stabilities of the high‐pressure minerals, ringwoodite, akimotoite, and Ca‐clinopyroxene, the melt vein crystallized at approximately 18 GPa. The Fe<jats:sub>2</jats:sub>SiO<jats:sub>4</jats:sub>‐spinel + stishovite assemblage in the FeO‐SiO<jats:sub>2</jats:sub>‐rich melts is consistent with crystallization of the melt vein matrix at the pressure up to 18 GPa. The crystallization pressure of ˜18 GPa is much lower than the 45–90 GPa pressure one would conclude from the S6 shock effects in melt veins (Stöffler et al. 1991) and somewhat less than the 25–30 GPa inferred from S5 shock effects (Schmitt 2000) found in the bulk rock.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381699994157321344","@type":"Researcher","foaf:name":[{"@value":"Zhidong XIE"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994157321345","@type":"Researcher","foaf:name":[{"@value":"Thomas G. SHARP"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"10869379"},{"@type":"EISSN","@value":"19455100"}],"prism:publicationName":[{"@value":"Meteoritics & Planetary Science"}],"dc:publisher":[{"@value":"Wiley"}],"prism:publicationDate":"2004-12","prism:volume":"39","prism:number":"12","prism:startingPage":"2043","prism:endingPage":"2054"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2004.tb00095.x"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2004.tb00095.x"}],"createdAt":"2010-01-26","modifiedAt":"2023-11-17","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004232135215488","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Evidence for multiple dynamic events and subsequent decompression stage recorded in a shock vein"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285707402309120","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Sound velocities measurement on MgSiO3 akimotoite at high pressures and high temperatures with simultaneous in situ X-ray diffraction and ultrasonic study"}]},{"@id":"https://cir.nii.ac.jp/crid/1360572092406786944","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Systematic investigations of high‐pressure polymorphs in shocked ordinary chondrites"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846643276521472","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"High‐pressure minerals in shocked meteorites"}]},{"@id":"https://cir.nii.ac.jp/crid/2050025942153536512","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Natural and experimental high-pressure, shock-produced terrestrial and extraterrestrial materials"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1111/j.1945-5100.2004.tb00095.x"},{"@type":"CROSSREF","@value":"10.1016/j.epsl.2011.05.010_references_DOI_IBSoUdrhQStBp3RDCnuD6LztLkb"},{"@type":"CROSSREF","@value":"10.1111/maps.13608_references_DOI_IBSoUdrhQStBp3RDCnuD6LztLkb"},{"@type":"CROSSREF","@value":"10.1111/maps.12902_references_DOI_IBSoUdrhQStBp3RDCnuD6LztLkb"},{"@type":"CROSSREF","@value":"10.1186/s40645-021-00451-6_references_DOI_IBSoUdrhQStBp3RDCnuD6LztLkb"},{"@type":"CROSSREF","@value":"10.1016/j.pepi.2013.06.005_references_DOI_IBSoUdrhQStBp3RDCnuD6LztLkb"}]}