Palynological age constraint of Les Vilelles unit, Catalan Coastal Chain, Spain
González, F. (Universidad de Huelva. Departamento de Ciencias de la Tierra)
Moreno Garrido, María Carmen ![ORCID Identifier](/img/uab/orcid.ico)
(Universidad de Huelva. Departamento de Ciencias de la Tierra)
Melgarejo Draper, Joan Carles ![ORCID Identifier](/img/uab/orcid.ico)
(Universitat de Barcelona. Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals)
Sáez, R. (Universidad de Huelva. Departamento de Ciencias de la Tierra)
Date: |
2015 |
Abstract: |
Les Vilelles unit is a detrital sequence exposed at the southwestern margin of the Catalan Coastal Chain (CCC), NE Spain, below the Carboniferous turbiditic series. Based on the palynological content, the age of this unit was initially assigned to the Middle-Late Devonian (Eifelian to Famennian). Additional radiolarian and conodont findings were considered to be Early-Middle Mississippian (Tournaisian to early Visean). To clarify this age discrepancy a new and more comprehensive palynostratigraphic analysis has been conducted in the upper part of the section representative of Les Vilelles unit. This has provided an assemblage of miospores, acritarchs, prasinophyta phycomata and chitinozoans that can be confidently assigned to a latest Frasnian interval, in contact with the Frasnian-Famennian boundary. Therefore, the present analysis refines the Middle-Late Devonian age formerly assigned, establishes a latest Frasnian age for the top of the unit, and provides new insights to the better understanding of the unconformity and hiatus separating the pre-Carboniferous and Carboniferous CCC series in the Priorat Massif. The study also includes a systematic section with the description of three newly established miospore species: Dibolisporites coniugatum, Dibolisporites prioratum and Rugospora spinosa. |
Rights: |
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Language: |
Anglès |
Document: |
Article ; recerca ; Versió publicada |
Subject: |
Les vilelles unit ;
Catalonian coastal ranges ;
Palynology ;
Late devonian ;
Frasnian-famennian |
Published in: |
Geologica acta, Vol. 13 Núm. 4 (December 2015) , p. 345-362 (Articles) , ISSN 1696-5728 |
Adreça alternativa: https://raco.cat/index.php/GeologicaActa/article/view/302724
Adreça alternativa: https://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.4.7
DOI: 10.1344/GeologicaActa2015.13.4.7
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Record created 2015-12-31, last modified 2024-06-01