An integrated Eocene chronostratigraphy for the central sector of the SE margin of the Ebro Basin
The Paleogene sedimentary record in the Pontils area (SE sector of the Ebro Basin) consists of a ~ 2000-m-thick sequence formed by the Mediona Fm, the Orpí Fm, the Pontils Gp, the Santa Maria Gp and the Sant Miquel de Montclar Conglomerates. The age of these materials is loosely constrained based on...
| Autores: | , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2012 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/86945 |
| Acesso em linha: | http://hdl.handle.net/10261/86945 |
| Access Level: | acceso abierto |
| Palavra-chave: | Magnetostratigraphy Eocene Ebro Basin |
| Resumo: | The Paleogene sedimentary record in the Pontils area (SE sector of the Ebro Basin) consists of a ~ 2000-m-thick sequence formed by the Mediona Fm, the Orpí Fm, the Pontils Gp, the Santa Maria Gp and the Sant Miquel de Montclar Conglomerates. The age of these materials is loosely constrained based on stratigraphic relationships with marine sediments and punctual mammal fossils and charophyte assemblages within the continental materials. In order to precise their chronology, a magnetostratigraphic section up to 1500-m-thick in the Pontils-Sant Miquel de Montclar area has been studied and correlated to the Global Polarity Time Scale. From this correlation the age of the Pontils Gp is established in Lutetian to middle Bartonian, the Collbàs Fm would be middle Bartonian and the overlying Sant Miquel Conglomerates would range from Bartonian to Priabonian. This new chronology has been integrated with recent magneto- and biostratigraphic studies in more northeasterly sectors of the SE margin of the Ebro Basin (Igualada and Montserrat areas). This new and continuous chronological framework is essential to unravel and quantify the rates of change in the Ebro Basin-Catalan Coastal Ranges system. |
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