TECTONIC AND THERMAL CONSTRAINTS OF EMPLA CEMENT OF HIMALAYAN LEUKOGRANITES

Authors
GUILLOT S PECHER A LEFORT P
Citation
S. Guillot et al., TECTONIC AND THERMAL CONSTRAINTS OF EMPLA CEMENT OF HIMALAYAN LEUKOGRANITES, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 320(1), 1995, pp. 55-61
Citations number
19
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie → ACNP
ISSN journal
12518069
Volume
320
Issue
1
Year of publication
1995
Part
2
Pages
55 - 61
Database
ISI
SICI code
1251-8069(1995)320:1<55:TATCOE>2.0.ZU;2-F
Abstract
Thermobarometrical study of the metamorphic contact aureole of three H igh Himalayan leucogranites emphasizes the importance of magma rheolog y during pluton emplacement. In fact, the depth of emplacement at 12 /- 2 km seems to be controlled by an important increase of the magma v iscosity during the crossing of the hydrated solidus at this depth. Th e North Himalayan Normal Fault probably controls the pressure drop rec orded by the magma during its ascent and emplacement.