HP METAMORPHIC BELT ALONG THE INDUS SUTUR E ZONE OF NW HIMALAYA - NEWDISCOVERIES AND SIGNIFICANCE

Authors
LEFORT P GUILLOT S PECHER A
Citation
P. Lefort et al., HP METAMORPHIC BELT ALONG THE INDUS SUTUR E ZONE OF NW HIMALAYA - NEWDISCOVERIES AND SIGNIFICANCE, Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 325(10), 1997, pp. 773-778
Citations number
30
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes → ACNP
ISSN journal
12518050
Volume
325
Issue
10
Year of publication
1997
Pages
773 - 778
Database
ISI
SICI code
1251-8050(1997)325:10<773:HMBATI>2.0.ZU;2-H
Abstract
Two new occurrences of HP rocks have been found in the Indus suture zo ne on the eastern side of the Nanga Parbat-Haramosh massif: a retrogre ssed eclogitic assemblage in pyroxenitic boudins within the Ladakh isl and-arc sequence, and an HP granulitic paragenesis in mafic alternatio ns of High Himalaya banded gneisses. PT estimates on five samples with et-clinopyroxene-amphibole-plagioclase-quartz-FeTi oxide-biotite mine ral assemblage have respectively yielded 13 +/- 1 kbar for 610 +/- 30 degrees C, and 10 +/- 1kbar for 700 +/- 50 degrees C. This metamorphis m is linked to the continuous subduction of continental and arc materi al after India-Eurasia collision. The granulitic retrogression corresp onds to a phase of collage, with prograde granulites during exhumation .