HERCYNIAN AGE OF AN EXTENSIONAL TECTONICS IN THE AGLY MASSIF (PYRENEES-ORIENTALES, FRANCE) - EVIDENCE FROM THE ANSIGNAN CHARNOCKITE AND ST-ARNAC GRANITE

Authors
ALTHOFF F BARBEY P PONS J
Citation
F. Althoff et al., HERCYNIAN AGE OF AN EXTENSIONAL TECTONICS IN THE AGLY MASSIF (PYRENEES-ORIENTALES, FRANCE) - EVIDENCE FROM THE ANSIGNAN CHARNOCKITE AND ST-ARNAC GRANITE, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 319(2), 1994, pp. 239-246
Citations number
15
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
319
Issue
2
Year of publication
1994
Part
2
Pages
239 - 246
Database
ISI
SICI code
0764-4450(1994)319:2<239:HAOAET>2.0.ZU;2-V
Abstract
Syn-magmatic structures of the Ansignan charnockite show that its empl acement occurred during an extensional tectonic event which can be est imated at around 316 Ma. This together with the relationships between the granite and its surrounding migmatites further imply that anatexis of the lower gneissic unit also occurred during extension. The emplac ement of the St.-Arnac granite appears to post-date this crustal thinn ing event.