Aspectos petrológicos , geoquímicos y metalogénicos del magmatismo intraplaca en distintos contextos y edades geológicas.

• F. Gervilla ^[3] ; P. Fenoll Hach-Alí ^[3] ; A. García-Casco ^[3] ; P. Higueras ^[1] ; J.F. Molina ^[3] ; D. Morata ^[2] ; E. Puga ^[3] ; A. Sánchez-Anguita ^[4]
  1. [1] Universidad de Castilla-La Mancha

     Universidad de Castilla-La Mancha

     Ciudad Real, España

     
  2. [2] Universidad de Cádiz

     Universidad de Cádiz

     Cádiz, España

     
  3. [3] Departamento de Mineralogía y Petrología, y/o Instituto Andaluz de Ciencias de la Tierra (Universidad de Granada-CSIC). Facultad de Ciencias. Avda. Fuentenueva, s/n, 18002 Granada.
  4. [4] APLITEG S.L. Colonia de San Sebastián, 6-6ªA, 18007 Granada.

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• Localización: Geogaceta, ISSN 0213-683X, Nº. 20, 7, 1996, págs. 1653-1656
• Idioma: español
• Títulos paralelos:
  • Petrologic, geochemical and metallogenic aspects of intraplate magmatism in various geological settings and ages.
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• Resumen

  • Different ocurrences of basic-ultrabasic rocks ranging in age from Precambrian to Mesozoic reveal that intraplate magmatism is a suitable target for exploration of Ni-Cu-PCE ores (and locally, Hg ores). Long travels of these magmas across the continental crust favours the assimilation of enclosing siliceous rocks, promoting their saturation in sulfur and segregation of immiscible sulfide melts. This can generate a primary Ni-Cu-PCE ore which can be remobilized and reconcentrated during later hydrothermal or tectonometamorphic processes. The latter are obviously more probable in old than in young rocks, thus explaining the current association of world-grade, Ni-Cu-PCE deposits to Precambrian and Paleozoic rocks.