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DIGITAL.CSIC
Article . 2018
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Silex "tobaceos" en el Mioceno inferior continental (Prov. Cuenca). Un ejemplo de silicificaciones de paleosuelos en ambiente de lago-playa.

Authors: Bustillo, Mª Ángeles; Díaz Molina, Margarita;

Silex "tobaceos" en el Mioceno inferior continental (Prov. Cuenca). Un ejemplo de silicificaciones de paleosuelos en ambiente de lago-playa.

Abstract

Los sílex con estructura tobáceas aparecen con relativa frecuencia en el Terciario continental que aflora al E. de la sierra de Altomira. Alcanzan un gran desarrollo al techo de la "unidad detrítica superior" entre las poblaciones de Huete y Garcinarro. Estos sílex tobáceos se originan por reemplazamiento de yesos que poseen una estructura "tubular". La estructura, "tubular" se caracteriza por la disposición concéntrica de los cristales de yeso alrededor del eje vertical y se interpreta como rizocreciones .El aspecto petrográfico más importante de estos sílex es la presencia de esporas y la existencia de corpúsculos formados por materia orgánica y sílice. Se deduce que en el comienzo de la silicificación, las sustancias orgánicas originadas por la actividad vegetal son incorporadas a las disoluciones silíceas, se forman puntos de sobresaturación y precipitan los corpúsculos silíceo-orgánicos. La substitución se da en paleosuelos relacionados con un ambiente de lago-playa.

No

Country
Spain
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Keywords

Paleosuelos, Esporas, Materia orgánica, Silicificación

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selected citations
These citations are derived from selected sources.
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).
BIP!Citations provided by BIP!
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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