AR-40-AR-39 DATING OF AMPHIBOLITES FROM T HE LEPTYNO-AMPHIBOLITIC COMPLEX OF THE PLATEAU DAIGURANDE - VARISCAN COLLISION AT 390 MA IN THE NORTH-WEST FRENCH MASSIF-CENTRAL

Authors
BOUTIN R MONTIGNY R
Citation
R. Boutin et R. Montigny, AR-40-AR-39 DATING OF AMPHIBOLITES FROM T HE LEPTYNO-AMPHIBOLITIC COMPLEX OF THE PLATEAU DAIGURANDE - VARISCAN COLLISION AT 390 MA IN THE NORTH-WEST FRENCH MASSIF-CENTRAL, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 316(10), 1993, pp. 1391-1398
Citations number
22
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre → ACNP
ISSN journal
07644450
Volume
316
Issue
10
Year of publication
1993
Pages
1391 - 1398
Database
ISI
SICI code
0764-4450(1993)316:10<1391:ADOAFT>2.0.ZU;2-H
Abstract
An Ar-40-Ar-39 investigation has been carried out on amphibole from an allochthonous unit of the Plateau d'Aigurande (northwestern French Ma ssif Central). A 390 Ma age can be attributed to the metamorphism of t he amphibolite facies. The event is contemporaneous with the massif st ructuration, which accompanied the collision of Breton and Gondwanian plates during the Variscan orogeny. The age of 390 Ma is in accordance with those obtained elsewhere in other parts of the French Varican Be lt.