Sedimentología y cicloestratigrafía de la Formación Barahona (Jurásico Inferior) en la Rama Aragonesa de la Cordillera Ibérica
A detailed bed-by-bed sedimentological and cyclostratigraphic characterization of the Barahona Formation has been carried out in two representative outcrops in the Aragonese Branch of the Iberian Range, in order to characterize the sedimentary environment and evaluate the factors controlling the sed...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | español |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/10635 |
| Acceso en línea: | http://hdl.handle.net/10272/10635 |
| Access Level: | acceso abierto |
| Palabra clave: | Upper Pliensbachian Iberian Basin Carbonate ramp Barahona Formation High-order sequence Pliensbaquiense superior Cuenca Ibérica Rampa carbonatada Formación Barahona Secuencia de alto orden |
| Sumario: | A detailed bed-by-bed sedimentological and cyclostratigraphic characterization of the Barahona Formation has been carried out in two representative outcrops in the Aragonese Branch of the Iberian Range, in order to characterize the sedimentary environment and evaluate the factors controlling the sedimentation during the upper Pliensbachian in the Iberian Basin. Facies range from proximal mid-ramp bioclastic packstones, distal mid-ramp bioclastic wackestones and mudstones, to proximal outer-ramp marly limestones and marls. Sequence analysis indicates the presence of twelve metre-thick high-order sequences, grouped in four longer-term sequences, which have been interpreted in terms of relative sea-level variations controlled by climatic changes in the bands of short- and longterm eccentricity cycles. At the longer scale, the studied unit records the regressive episode of the late Pliensbachian, and probably the initial deepening of the Toarcian cycle |
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