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

  1. González Roldán, Manuel
Supervised by:
  1. Teodosio Donaire Romero Director
  2. Emilio Pascual Martínez Director

Defence university: Universidad de Huelva

Fecha de defensa: 17 March 2010

Committee:
  1. Gabriel Ruiz de Almodóvar Sel Chair
  2. María José Huertas Coronel Secretary
  3. David Orejana García Committee member
  4. Christian Pin Committee member
Department:
  1. CIENCIAS DE LA TIERRA

Type: Thesis

Teseo: 290057 DIALNET lock_openArias Montano editor

Abstract

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.