Minerales accesorios de Fe y Ti en las intrusiones alcalinas de Tamarga. La Gomera (Islas Canarias).

  1. J.A. Rodríguez 1
  2. J. De la Nuez 1
  3. J. Martínez-Frías 2
  1. 1 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

  2. 2 Instituto Andaluz de Ciencias de la Tierra
    info

    Instituto Andaluz de Ciencias de la Tierra

    Granada, España

    ROR https://ror.org/00v0g9w49

Aldizkaria:
Revista de la Sociedad Geológica de España

ISSN: 0214-2708

Argitalpen urtea: 1990

Alea: 3

Zenbakia: 1-2

Orrialdeak: 161-166

Mota: Artikulua

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Beste argitalpen batzuk: Revista de la Sociedad Geológica de España

Laburpena

Ore phases linked to hydrothermal processes were detected in La Gomera (Islas Canarias). Pyrite-pyrrhotite and magnetite-ilmenite associations in Tamargada's alkaline rocks are studied and used as geothermometric indicators. The former pair suggests a stability about 650-700°C for primary and idiomorphic types, and less than 500°C for secundary allotriomorphic ones, formed by hydrothermal metamorphism. Magnetite-ilmenite pairs, point out an interval about 700-790°C that would come up to the magmatic crystallization temperature.

Datuen iturria: Dialnet