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dc.contributor.authorMeinhold, Guido
dc.contributor.authorRoberts, Nick M W
dc.contributor.authorArslan, Arzu
dc.contributor.authorJensen, Sören
dc.contributor.authorEbbestad, Jan Ove R.
dc.contributor.authorHögström, Anette
dc.contributor.authorHøyberget, Magne
dc.contributor.authorAgic, Heda
dc.contributor.authorPalacios, Teodoro
dc.contributor.authorTaylor, Wendy L.
dc.date.accessioned2020-06-22T17:11:08Z
dc.date.available2020-06-22T17:11:08Z
dc.date.issued2020-06-10
dc.description.abstractResults of <i>in situ</i> U–Pb dating of calcite spherulites, cone‐in‐cone (CIC) calcite and calcite fibres from a calcareous concretion of the upper Ediacaran of Finnmark, Arctic Norway, are reported. Calcite spherulites from the innermost layers of the concretion yielded a lower intercept age of 563 ± 70 Ma, which although imprecise, is within uncertainty of the age of sedimentation based on fossil assemblages. Non‐deformed CIC calcite from the bottom part of the concretion yielded an age of 475 ± 25 Ma, which is interpreted as the age of CIC calcite formation during a period of fluid overpressure induced during burial of the sediments. Deformed CIC calcite from the top part of the concretion yielded an age of 418 ± 23 Ma, which overlaps with a known Caledonian tectono‐metamorphic event, and indicates a potential post‐depositional overprint at this time. Calcite fibres that grew in small fissures along spherulite rims, which are interpreted as a recrystallization feature during deformation and formation of a cleavage, gave an imprecise age of 486 ± 161 Ma. Our results show that U–Pb dating of calcite can provide age constraints for ancient carbonates and syn‐ to post‐depositional processes that operated during burial and metamorphic overprinting.en_US
dc.identifier.citationMeinhold G, Roberts, Arslan A, Jensen S, Ebbestad JOR, Högström A, Høyberget M, Agic H, Palacios T, Taylor WL. U–Pb dating of calcite in ancient carbonates for age estimates of syn- to post-depositional processes: a case study from the upper Ediacaran of Finnmark, Arctic Norway.. Geological Magazine. 2020en_US
dc.identifier.cristinIDFRIDAID 1810463
dc.identifier.doi10.1017/S0016756820000564
dc.identifier.issn0016-7568
dc.identifier.issn1469-5081
dc.identifier.urihttps://hdl.handle.net/10037/18625
dc.language.isoengen_US
dc.publisherCambridge University Pressen_US
dc.relation.journalGeological Magazine
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FRINATEK/231103/NorwayThe Digermul Peninsula - a window into the early diversification of animal life//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s). Published by Cambridge University Pressen_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Stratigraphy and paleontology: 461en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Stratigrafi og paleontologi: 461en_US
dc.titleU–Pb dating of calcite in ancient carbonates for age estimates of syn- to post-depositional processes: a case study from the upper Ediacaran of Finnmark, Arctic Norwayen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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