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New Insights on the Upper Triassic Silves Group in Algarve Basin, Portugal: Palynological, paleophytogeography and paleoclimatology advances

2024-10Journal article Open access
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dc.contributor.authorVilas Boas, Margarida
dc.contributor.authorPereira, Zélia
dc.contributor.authorCirilli, Simonetta
dc.contributor.authorFernandes, Paulo
dc.date.accessioned2024-12-09T12:42:15Z
dc.date.available2024-12-09T12:42:15Z
dc.date.issued2024-10
dc.description.abstractABSTRACT: This paper presents the results of palynostratigraphic studies in the Silves Group in the Algarve Basin, Portugal. From bottom to top comprises the Silves Sandstones, the Silves Marl-Carbonate Evaporitic Complex, and the Volcano-Sedimentary Series. This study aims to detail the age of the Silves Group, bracketing the Triassic-Jurassic transition, using palynology. For this purpose, 250 samples were collected from 14 main sections. Previous results from a section above the Variscan unconformity, enabled to date the base of the Silves Sandstones and the onset of the Mesozoic sedimentary cycle in the Algarve Basin to lower Carnian. In this work, the top of the Silves Sandstones, containing Camerosporites secatus, Enzonalasporites vigens, Granuloperculatipollis rudis, Lagenella martinii, Patinasporites densus, Samaropollenites speciosus, and Vallasporites ignacii, is dated to the upper Carnian. The base of the Silves Marl-Carbonate Evaporitic Complex, consisting of Alisporites sp., Araucariacites australis, Classopollis meyerianus, Classopollis torosus, Paracirculina quadruplicis and Triadispora sp., indicates an upper Carnian age. The presence of Alisporites diaphanus, Araucariacites australis, Cerebropollenites macroverrucosus, Classopollis meyerianus, Classopollis torosus, Perinopollenites elatoides, Calamospora mesozoica, and Kraeuselisporites reissingeri allows to date the top of the Silves Marl-Carbonate Evaporitic Complex as upper Rhaetian-lower Hettangian. This study allows to date the Silves Group in the Algarve Basin from the lower Carnian to lower Hettangian (Triassic-Jurassic boundary) for the first time. The Carnian microflora provides new insights of the Onslow Microflora in the Western Tethys.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVilas-Boas, M., Pereira, Z., Cirilli, S. & Fernandes, P. (2024) New Insights on the Upper Triassic Silves Group in Algarve Basin, Portugal: Palynological, paleophytogeography and paleoclimatology advances. In: Geobios, 2024, vol. 86, p. 49-64. https://doi.org/10.1016/j.geobios.2024.08.001pt_PT
dc.identifier.doi10.1016/j.geobios.2024.08.001pt_PT
dc.identifier.issn0016-6995
dc.identifier.urihttp://hdl.handle.net/10400.9/4398
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationLA/P/0069/2020pt_PT
dc.relationUID/00350/2020pt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.geobios.2024.08.001pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectPalynostratigraphypt_PT
dc.subjectPaleophytogeographypt_PT
dc.subjectPaleontologypt_PT
dc.subjectSporomorphspt_PT
dc.subjectAlgarve Basinpt_PT
dc.subjectTriassic-Jurassic boundarypt_PT
dc.titleNew Insights on the Upper Triassic Silves Group in Algarve Basin, Portugal: Palynological, paleophytogeography and paleoclimatology advancespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F144125%2F2019/PT
oaire.citation.endPage64pt_PT
oaire.citation.startPage49pt_PT
oaire.citation.titleGeobiospt_PT
oaire.citation.volume86pt_PT
oaire.fundingStreamOE
person.familyNameVilas Boas
person.familyNamePereira
person.familyNameFernandes
person.givenNameMargarida
person.givenNameZélia
person.givenNamePaulo
person.identifier422469
person.identifier.ciencia-id6C1B-ED1C-8F5D
person.identifier.ciencia-id051D-A133-65D9
person.identifier.orcid0000-0001-8501-7052
person.identifier.orcid0000-0003-3056-6219
person.identifier.orcid0000-0003-4888-0230
person.identifier.ridJ-6577-2014
person.identifier.scopus-author-id57197129025
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationadfe3e67-139b-4c6d-bb20-c73e28660251
relation.isAuthorOfPublication5d2bf797-f915-4f53-ae53-166dedd0845a
relation.isAuthorOfPublicationb42caa3f-b216-443e-921f-a05b10543663
relation.isAuthorOfPublication.latestForDiscovery5d2bf797-f915-4f53-ae53-166dedd0845a
relation.isProjectOfPublication88d45b24-bb06-4e0c-86d0-dad5b69aa196
relation.isProjectOfPublication.latestForDiscovery88d45b24-bb06-4e0c-86d0-dad5b69aa196

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