Abstract

Discusses the genetic relationships between migmatites (amphibole granites and diorites with or without quartz) and basic rocks (melanocratic diorites, norites, hornblendites, peridotites) in the peripheral zone of the Querigut massif in the French Pyrenees. The massif is composed for the most part of normal biotite granites. The basic masses included in the migmatites are considered local segregation products formed in highly contaminated zones during a late stage of migmatization.

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