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Palynostratigraphic reassessment of the Late Devonian of Bjørnøya, Svalbard

2021Journal article Restricted access
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dc.contributor.authorLopes, Gilda
dc.contributor.authorMangerud, Gunn
dc.contributor.authorClayton, Geoff
dc.contributor.authorVigran, Jorunn Os
dc.date.accessioned2021-07-09T16:03:51Z
dc.date.available2023-03-01T01:30:14Z
dc.date.issued2021
dc.description.abstractA comprehensive study of the Late Devonian palynostratigraphy of Bjørnøya, Svalbard Archipelago is presented.A total of 61 samples collected from 10 outcrops located along the eastern coast of the island were analyzed forpalynology yielding a mid- to latest Famennian age. A reassessment of the existing palynostratigraphy of the UrsaSandstone Unit of the Røedvika Formation was undertaken. As no independent age control exists for this succes-sion, the palynological assemblages were correlated to well-calibrated palynological zonations from the Easternand Western Europe. The middle to upper part of the Vesalstranda Member and the Kapp Levin Member wereassigned a mid- to late Famennian age (CVa to VF biozones), and the middle to lower-upper part of the TunheimMember was dated as latest Famennian in age (LL to LN biozones). For thefirst time, a palynological age wasassignedto the upperpart ofthe KappLevin Member. Correlation with other Arctic areas show close resemblanceto Late Devonian assemblages from Europe and the Arctic region. However, differences in the stratigraphicalranges of several taxa were identified. In terms of Late Devonian paleophytogeographic provinces the miosporeassemblages are assigned to the Northern EuroamericanCornispora varicornataRealm for the mid-Famennian. Amore cosmopolitan trend was recognized for the latest Famennian (Strunian), with assemblages including abun-dantRetispora lepidophyta. The paleobotanical affinities of the palynomorphs reveal aflora of lycopods andprogymnosperms occupying this area during the Late Devonian, withRetispora lepidophytabecoming a commonelement in the latest Famennian.pt_PT
dc.description.sponsorshipPortuguese Foundation for Science and Technology: UIDP/00350/2020pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.revpalbo.2020.104376pt_PT
dc.identifier.issn0034-6667
dc.identifier.urihttp://hdl.handle.net/10400.1/16761
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectMiosporespt_PT
dc.subjectPaleoenvironmentspt_PT
dc.subjectFamennianpt_PT
dc.subjectRøedvika formationpt_PT
dc.subjectBillefjorden grouppt_PT
dc.subjectNorwegian Arcticpt_PT
dc.titlePalynostratigraphic reassessment of the Late Devonian of Bjørnøya, Svalbardpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage104376pt_PT
oaire.citation.titleReview of Palaeobotany and Palynologypt_PT
oaire.citation.volume286pt_PT
person.familyNameRodrigues Lopes
person.givenNameGilda Maria
person.identifier417492
person.identifier.orcid0000-0002-6866-5127
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication5cd06189-201b-4b3a-b8a7-d5c63941f17c
relation.isAuthorOfPublication.latestForDiscovery5cd06189-201b-4b3a-b8a7-d5c63941f17c

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