Depositional biofacies model for post-OAE1a Aptian carbonate platforms of the western Maestrat Basin (Iberian Chain, Spain)
| Autor: | Peter W. Skelton, Mukerrem Fenerci-Masse, Telm Bover-Arnal, Antoni Obrador, Eulàlia Gili, Ramon Salas |
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| Přispěvatelé: | Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Collège de France (CdF)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Institut National de la Recherche Agronomique (INRA), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
010506 paleontology
Aptian Aptià Region) [Maestrazgo (Valencian Community and Aragon] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Structural basin 010502 geochemistry & geophysics Oceanography 01 natural sciences Sedimentary depositional environment chemistry.chemical_compound Paleontology Carbonate rocks Marl 14. Life underwater Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Earth-Surface Processes biology Regió) [Maestrat (País Valencià i Aragó] 15. Life on land biology.organism_classification chemistry Rudists Facies Roques calcàries Paleoecology Paleoecologia Carbonate Geology |
| Zdroj: | Palaeogeography, Palaeoclimatology, Palaeoecology Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2016, 453, pp.101-114. ⟨10.1016/j.palaeo.2016.03.029⟩ Dipòsit Digital de la UB Universidad de Barcelona Palaeogeography, Palaeoclimatology, Palaeoecology, 2016, 453, pp.101-114. ⟨10.1016/j.palaeo.2016.03.029⟩ |
| ISSN: | 0031-0182 |
| DOI: | 10.1016/j.palaeo.2016.03.029⟩ |
| Popis: | International audience; Two well exposed platform successions of late Early Aptian age developed in the central part of the Galve sub basin of the Maestrat Basin: the highstand `Camarillas-El Morron' platform, and the succeeding `Las Mingachas' small lowstand platform, built out downslope in the former basin. Both platforms had a flat-topped non-rimmed depositional profile, showing similar platform-top to slope biofacies, which are described here in both qualitative and quantitative terms. The proximal platform top succession is characterized by a Toucasia-dominated rudist association. The margins of the two platforms consist of massive limestone characterized by a Polyconites-dominated association, in which clusters of Polyconites hadriani in life position are joined by both branching and domal corals, as well as the oyster-like Chondrodonta and nerineid gastropods. In Las Mingachas platform, where the massive rudist- and coral-rich platform limestones pass laterally into the slightly more marly and recessive clinoforms of the upper slope facies, Polyconites is especially abundant. Basinwards these slope deposits pass into basinal marls with orbitolinids and ammonoids. The distribution of the two distinct rudist associations recognized here is attributed to the different environmental tolerances of the rudists with respect to such factors as current regime and rate of sedimentation. The prevalence of polyconitids, in place of caprinids, in these late Early Aptian platform margin fades makes a striking contrast with older, earliest Aptian platforms. (C) 2016 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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