Caracterización mineralógica y química de la granodiorita de Los Pedroches en la zona de cizalla dúctil de Conquista

  1. Larrea Bilbao, Francisco José
  2. Carracedo Sánchez, Manuel
  3. Tubía Martínez, José María
  4. Aranguren Iriarte, Aitor
  5. Cuevas Urionabarrenechea, Julia
Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2001

Issue: 30

Pages: 71-74

Type: Article

More publications in: Geogaceta

Abstract

The northern edge of Los Pedroches granodioritic pluton is deformed by the Conquista fault, a right ductile shear zone with a normal component. Consecuently, the rocks of this sector show gradual texture-structural modifications, without any differences in their modal mineralogy. Chemically, the minimal variations observed, instead of the deformation are a cause of the diferentiation by fractional crystallization, of plagioclase, biotite, amphibole, apatite and ilmenite. The high-temperature deformational processes -near to the magmatic solidus- observed in the Los Pedroches granodiorite, have not related any significant chemical alteration