Mineralogía, petrología y geoquímica de intrusiones sin-volcánicas en el distrito minero de Skellefte, Norte de Suecia

  1. González Roldán, Manuel
Dirixida por:
  1. Teodosio Donaire Romero Director
  2. Emilio Pascual Martínez Director

Universidade de defensa: Universidad de Huelva

Fecha de defensa: 17 de marzo de 2010

Tribunal:
  1. Gabriel Ruiz de Almodóvar Sel Presidente/a
  2. María José Huertas Coronel Secretario/a
  3. David Orejana García Vogal
  4. Christian Pin Vogal
Departamento:
  1. CIENCIAS DE LA TIERRA

Tipo: Tese

Teseo: 290057 DIALNET lock_openArias Montano editor

Resumo

The Skellefte mining distric is one of the most important mining regions in Sweden, located in the Proterozoic island-arc (1.90-1.87 Ga) of the Baltic Shield, Northern Sweden. Three main intrusive stages have been determined in the Jörn Granitoid Complex (JGC). The first stage of GI tonalites (1885 Ma) includes the satellite intrusions and with calc-alkaline character; the second stage (1875 Ma) corresponding to the alkaline-calcic GII (granodiorites and qz-monzodiorites) intrusions and associated Näsbeerget layered intrusions; finally the granites and GIII and GIV intrusive facies are systematic, regarding to mineralogy, texture, alteration, metamorphism, lithogeochemical character and age. In particular, the lithogeochemical differences suggest an important variation in the magma type.