Palynostratigraphical dating of the Lower Cretaceous Peñaferruz Formation, San Pedro de Antromero Beach (Asturias Region, northwestern Iberian Peninsula) - 29/12/18
Abstract |
A palynological assemblage of five Lower Cretaceous stratigraphic levels corresponding to the Peñaferruz Formation in San Pedro de Antromero Beach, has been studied to determine the exact age of this formation. An age no older than the Aptian is suggested on the basis of the palynoflora, based on the presence of Trilobosporites hannonicus, Cicatricosisporites venustus, Cicatricosisporites berouensis, Ephedripites dudarensis, and Reticulisporites semireticulatus. This age assignment implies a new relationship between the Peñaferruz and Antromero formations, the Peñaferruz Formation being younger than previously thought. This possibly makes both formations contemporaneous, at least at the San Pedro de Antromero Beach section, suggesting a lateral change of facies between these deposits.
Le texte complet de cet article est disponible en PDF.Keywords : Palynology, Palaeobotany, Palaeoenvironment, Early Cretaceous, Aptian, Asturian Basin
Plan
☆ | Corresponding editor: Borja Cascales-Miñana. |
Vol 51 - N° 6
P. 579-589 - décembre 2018 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Déjà abonné à cette revue ?