{"@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/1362262944853136000.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1346/ccmn.1993.0410211"}},{"identifier":{"@type":"URI","@value":"https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0009860400019194"}},{"identifier":{"@type":"NAID","@value":"30003541706"}}],"dc:title":[{"@value":"Origin, Diagenesis, and Mineralogy of Chlorite Minerals in Devonian Lacustrine Mudrocks, Orcadian Basin, Scotland"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>Chlorite and corrensite are common clay minerals in lacustrine mudrocks from the Devonian Orcadian Basin, Scotland. The relationship of their occurrence to vitrinite reflectance data demonstrate that they are authigenic minerals, formed during burial diagenesis/metamorphism at temperatures of ≥120°C. Whole rock mineralogical and chemical analyses show that chlorite authigenesis occurred by reactions between the detrital dioctahedral clay mineral assemblage and dolomite that was formed under early evaporitic conditions in the lacustrine environment.</jats:p><jats:p>XRD and electron microprobe analyses indicate that phases intermediate between corrensite and chlorite are probably mixed-layer chlorite/corrensite with a tendency towards segregation of layer types. Chemically, the conversion of corrensite to chlorite involves an increase in Al for Si substitution in tetrahedral sites, but there is no change in the Fe/Mg ratio of octahedral cations. There is also no relationship of mixed-layer proportions to paleotemperature; only a general paleotemperature interval of approximately 120° to 260°C in which a range of phases between corrensite and chlorite occurs. Chlorite polytypes are exclusively IIb, indicating the formation of this polytype at diagenetic temperatures.</jats:p><jats:p>The occurrence of corrensite and Mg-rich chlorite in evaporite and carbonate successions is probably a reliable indicator of diagenetic alteration at temperatures of ≥ 100°C. Burial diagenetic reactions between dioctahedral clay minerals and Mg-rich carbonates may possibly explain many occurrences of corrensite and Mg-rich chlorite in such rocks.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1582824500990794368","@type":"Researcher","foaf:name":[{"@value":"S. Hillier"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00098604"},{"@type":"EISSN","@value":"15528367"}],"prism:publicationName":[{"@value":"Clays and Clay Minerals"}],"dc:publisher":[{"@value":"Cambridge University Press (CUP)"}],"prism:publicationDate":"1993-04","prism:volume":"41","prism:number":"2","prism:startingPage":"240","prism:endingPage":"259"},"reviewed":"false","dc:rights":["https://www.cambridge.org/core/terms"],"url":[{"@id":"https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0009860400019194"}],"createdAt":"2006-08-25","modifiedAt":"2025-01-10","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050306506454155648","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Alteration and dehydration of subducting oceanic crust within subduction zones : implications for decollement step-down and plate-boundary seismogenesis"},{"@value":"Alteration and dehydration of subducting oceanic crust within subduction zones : implications for décollement step-down and plate-boundary seismogenesis"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285707111917824","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Smectite to chlorite conversion by frictional heating along a subduction thrust"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285708264945536","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"A new source of water in seismogenic subduction zones"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285712353964416","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"High-Resolution Transmission Electron Microscopy (HRTEM) Study of Stacking Irregularity in Fe-Rich Chlorite From Selected Hydrothermal Ore Deposits"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182476720768","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Low-grade metamorphism around the down-dip limit of seismogenic subduction zones: Example from an ancient accretionary complex in the Shimanto Belt, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567186709012992","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Chlorite and chloritization processes through mixed-layer mineral series in low-temperature geological systems – a review"}]},{"@id":"https://cir.nii.ac.jp/crid/1520572358420854144","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@value":"高塩濃度,高アルカリ環境における粘土鉱物の生成と変化--放射性廃棄物地層処分環境におけるベントナイト緩衝材の変質に関連して"},{"@language":"ja-Kana","@value":"コウエン ノウド コウアルカリ カンキョウ ニ オケル ネンド コウブツ ノ セイセイ ト ヘンカ ホウシャセイ ハイキブツ チソウ ショブン カンキョウ ニ オケル ベントナイト カンショウザイ ノ ヘンシツ ニ カンレン シテ"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1346/ccmn.1993.0410211"},{"@type":"CIA","@value":"30003541706"},{"@type":"CROSSREF","@value":"10.1016/j.epsl.2011.02.051_references_DOI_4gKosP9pxtGS4J5AdqzCBkxnFHn"},{"@type":"CROSSREF","@value":"10.1029/2011gl048883_references_DOI_4gKosP9pxtGS4J5AdqzCBkxnFHn"},{"@type":"CROSSREF","@value":"10.1016/j.tecto.2011.02.010_references_DOI_4gKosP9pxtGS4J5AdqzCBkxnFHn"},{"@type":"CROSSREF","@value":"10.1180/claymin.2015.050.4.06_references_DOI_4gKosP9pxtGS4J5AdqzCBkxnFHn"},{"@type":"CROSSREF","@value":"10.1186/s40623-017-0635-1_references_DOI_4gKosP9pxtGS4J5AdqzCBkxnFHn"},{"@type":"CROSSREF","@value":"10.1346/ccmn.2016.0640205_references_DOI_4gKosP9pxtGS4J5AdqzCBkxnFHn"}]}