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Estratigrafía del Eoceno medio y superior del flanco occidental del anticlinal de Boltaña en el Valle del Ara

Authors: Arbués, P.; Garcés, Miguel; Beamud, Elisabet; Vinyoles, A.; Valero Montesa, Luis; Silva-Casal, R.; López-Blanco, M.; +3 Authors

Estratigrafía del Eoceno medio y superior del flanco occidental del anticlinal de Boltaña en el Valle del Ara

Abstract

Para detallar la correlación entre las cuencas de Ainsa y de Jaca (antepaís eoceno surpirenaico) y profundizar en el conocimiento de los efectos del crecimiento anticlinal en la sedimentación, se han tomado nuevos datos en el sector del valle del Ara situado al oeste del anticlinal de Boltaña, en concreto: un mapa geológico (1:25000); columnas detalladas, cortes geológicos, un estudio bioestratigráfico y un perfil magnetoestratigráfico de la serie, cuya potencia alcanza los 3 km. El análisis resulta en la división del conjunto en tres unidades regresivas separadas por dos intervalos transgresivos de menor potencia. El conjunto evoluciona desde una situación inicial de talud carbonatado, más profundo hacia el N, a la de un sistema fluviodeltaico, progradante hacia el O, sobre el cual se desarrolla un sistema fluvial con contribuciones septentrionales. La correlación de estas tres unidades con la cuenca de Ainsa sugiere que el anticlinal de Boltaña actuó en la zona de afloramientos como un alto submarino flanqueado por taludes carbonatados durante la etapa inicial, luego como un alto marino somero, separando sedimentación terrígena en el este de sedimentación carbonatada al oeste, para evolucionar a una situación de alto emergido sujeto a erosión y cortado por los sistemas fluviales.

X Congreso Geológico de España, 5-7 Julio 2021, Vitoria - Gasteiz

Country
Spain
Related Organizations
Keywords

Pirineos, Eoceno, relaciones tectónica-sedimentación

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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