Silicificaciones de calizas oolíticas del Dogger en el Subbético Interno oriental¿silcretas freáticas?

  1. M.A. Bustillo 1
  2. J. Rey 2
  3. A. Delgado 3
  4. P.A.Ruiz-Ortiz 4
  1. 1 Museo Nacional de Ciencias Naturales.CSIC. MADRID
  2. 2 Dpto. de Geología, Universidad de Jaén
  3. 3 Estación Experimental del Zaidín.CSIC. Granada
  4. 4 Dpto.de Geología, Universidad de Jaén, Facultad de Ciencias Experimentales
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Revue:
Geogaceta

ISSN: 0213-683X

Année de publication: 1996

Número: 20

Pages: 639-642

Type: Article

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D'autres publications dans: Geogaceta

Résumé

Cherts occurring in oolitic limestones of the Dogger in the Internal Subbetic, are studied far the first time. Two genetic hypothesis are considered from the interpretation of the stratigraphic, petrological and geochemical data. The one first considers that the silicification took place in relation with continental groundwater, in the Middle to Late Jurassic transition, forming silcretes. The second one, shows the silicification as generated from marine waters in diagenetic environments at re/atively higher temperatures, during Late }urassic-Early Cretaceous times.

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