THE GRANITIC BODIES OF THE HIGH MOULOUYA - GRANITIC LACCOLITHS IN THE EASTERN MESETA OF MOROCCO

Research areas:
Year:
1993
Authors:
Journal:
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II
Volume:
317
Number:
11
Pages:
1469-1476
Month:
DEC 2
ISSN:
1251-8069
BibTex:
Abstract:
The High-Moulouya granites from Aouli and Bou-Mia contain magmatic
structures, generated during emplacement in the crust, which provide
evidence for laccolithic injection. The first magmas, injected along
normal faults, were gabbroic in composition and cause a partial melting
of pelitic country-rocks. Evidence for magmatic mixing is provided by
various enclaves in the granitoids. Granitoid emplacement in the
oriental Meseta occurred in structural transtensional environment,
compatible with the structures of the occidental Meseta.