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
Aldizkaria:
Geogaceta

ISSN: 0213-683X

Argitalpen urtea: 1996

Zenbakien izenburua: 21a Sesión Científica, Huelva 1996

Zenbakia: 21

Orrialdeak: 211-214

Mota: Artikulua

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Beste argitalpen batzuk: Geogaceta

Laburpena

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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