Evolución de los fluidos hidrotermales en la génesis de los sulfuros masivos de Aznalcóllar (Faja Pirítica Ibérica)evidencias a partir de inclusiones fluidas.

  1. Toscano, M. 1
  2. Sáez, R. 1
  3. Almodóvar, G.R. 1
  1. 1 Universidad de Huelva, España
Revue:
Geogaceta

ISSN: 0213-683X

Année de publication: 1996

Titre de la publication: 21a Sesión Científica, Huelva 1996

Número: 21

Pages: 211-214

Type: Article

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D'autres publications dans: Geogaceta

Résumé

Fluid inclusion data from Aznalcóllar and Los Frailes stockworks indicate that hydrothermal fluids changed continuously in temperature and salinity, both in time and space. Th values change from 140 to 380 oC and salinity from 0.4 to 12.4 NaC/ eq. The highest values for both parameters have being found for central stockworks and later fluids. Statistic population analysis of fluid inclusion data points to three stages of hydrothermal activity, at low <200 ºC intermediate (200-300 °C) and high temperatures (300-400 ºC). Salinity values show similar variation trend with higher values for the last hydrothermal stage.

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