Barita de neoformación en la Arenisca de Villamayor (Salamanca)estudio preliminar

  1. Alonso-Gavilán, G. 1
  2. Moro, M.C. 1
  3. Cembranos, M.L. 1
  4. Areas, A. 2
  1. 1 Universidad de Salamanca, España
  2. 2 Minas y Geología. Salamanca, España
Zeitschrift:
Geogaceta

ISSN: 0213-683X

Datum der Publikation: 1997

Titel der Ausgabe: 22ª Sesión Científica, Bilbao 1997

Nummer: 22

Seiten: 15-17

Art: Artikel

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Andere Publikationen in: Geogaceta

Zusammenfassung

The barite studied in the Villamayor sandstone is located in old rhizoliths related to subvertical fractures which affect these subarcosic deposits. These zones are actually in great circulation within underground waters and fuIl of clay materials. The mineral' s form together with ist mineralogical, chemical and isotopic characteristics suggests that its formation is related with the postneogene alteration processes (caolinitization) of sandstones which libera te Ba of the feldspars and with the infiltration and circulation of metheoric waters that contain dissolved sulphates.

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