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

  1. González Roldán, Manuel
Dirigée par:
  1. Teodosio Donaire Romero Directeur
  2. Emilio Pascual Martínez Directeur/trice

Université de défendre: Universidad de Huelva

Fecha de defensa: 17 mars 2010

Jury:
  1. Gabriel Ruiz de Almodóvar Sel President
  2. María José Huertas Coronel Secrétaire
  3. David Orejana García Rapporteur
  4. Christian Pin Rapporteur
Département:
  1. CIENCIAS DE LA TIERRA

Type: Thèses

Teseo: 290057 DIALNET lock_openArias Montano editor

Résumé

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.