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Docta Complutense
Article . 2016
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Registro de una transgresión marina en torno al tránsito Jurásico-Cretácico al oeste de la sub-cuenca de Penyagolosa (Teruel)

The record of a marine transgression around the Jurassic-Cretaceous transition in the western Penyagolosa sub-basin (Teruel)
Authors: Campos Soto, Sonia; Caus Gracia, Esmeralda; Bucur, I.I.; Benito Moreno, María Isabel; Suárez González, Pablo; Quijada, Isabel Emma; Fernández, L; +1 Authors

Registro de una transgresión marina en torno al tránsito Jurásico-Cretácico al oeste de la sub-cuenca de Penyagolosa (Teruel)

Abstract

[ES] La Fm. Villar del Arzobispo es una unidad mixta siliciclástico-carbonática que es considerada como la unidad que representa la culminación de la tendencia regresiva del Jurásico terminal-Cretácico basal en la parte suroriental de la Cuenca Ibérica. En el oeste de la sub-cuenca de Penyagolosa (Cuenca del Maestrazgo) esta unidad está formada, en su parte inferior, por una alternancia de carbonatos marinos, areniscas y lutitas y, en la parte media y superior, por lutitas y areniscas, principalmente, que alternan con calizas que se van haciendo progresivamente más abundantes hacia el techo de la unidad. Estas calizas son peloidales, bioclásticas y oolíticas y contienen abundantes fósiles marinos. La presencia de estas facies marinas demuestra la existencia de un periodo transgresivo durante la sedimentación de la parte superior de la unidad. El estudio micropaleontológico ha revelado la presencia de una asociación de foraminíferos dominada por Anchispirocyclina lusitanica y del alga dasycladal Zergabriella embergeri, que indican que el episodio transgresivo tuvo lugar durante el intervalo Titoniense superior-¿Berriasiense inferior?

[EN] The Villar del Arzobispo Fm is a mixed siliciclastic-carbonate unit, which is considered as the unit that represents the culmination of the Late Jurassic-basal Cretaceous regressive trend in the southeastern Iberian Basin. In the western Penyagolosa sub-basin (Maestrazgo Basin) this unit is formed, in its lower part, by an alternation of marine limestone, sandstone and siliciclastic mudstone and, in the middle and upper part, by siliciclastic mudstone and sandstone alternating with limestone, which is progressively more abundant towards the uppermost part of the unit. This limestone is formed by peloids, bioclasts and ooids and contains abundant marine fossils. The presence of these marine facies demonstrates that a transgression took place during the sedimentation of the upper part of the unit. The micropaleontological study reveals the presence of a foraminifera association dominated by Anchispirocyclina lusitanica and the dasyclad algae Zergabriella embergeri, indicating that the transgressive episode took place during the Upper Tithonian-Lower Berriasian? interval.

Comunicación presentada al IX Congreso Geológico de España, Huelva, septiembre 2016.

Este trabajo ha sido financiado por el proyecto CGL2014-52670-P y por una beca FPU.

Peer reviewed

Country
Spain
Keywords

551.7, Tithonian-Berriasian, 2506.19 Estratigrafía, Titoniense-Berriasiense, Transgression, Geología estratigráfica, Maestrazgo Basin, Transgresión, Sub-cuenca de Penyagolosa, Penyagolosa sub-basin, Cuenca del Maestrazgo

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