Petrology and geothermometry of retrograded Hercynian charnockites and host gneisses, Agly Massif, French Pyrenees

Saved in:
Authors:Paquet, J.
Author Affiliations:Primary:
Univ. Lille, Lille, France
Volume Title:Journal of Metamorphic Geology
Source:Journal of Metamorphic Geology, 3(1), p.43-58. Publisher: Blackwell, Oxford, United Kingdom. ISSN: 0263-4929
Publication Date:1985
Note:In English. 28 refs.; illus. incl. 1 table, 4 plates, geol. sketch map
Summary:A Hercynian intrusion in the granulite facies of the Ansignan complex of the eastern Pyrenees contains biotite-garnet assemblages as the retrograde products of orthopyroxene alteration. Analysis of >170 biotite-garnet pairs and numerous individual crystals indicates equilibration at 550°-600°C, whereas those of the surrounding gneisses have equilibrated between 550° and 650°C. Two main thermal steps are recognized: one in the gneisses between 600° and 650°C and a second one both in the gneisses and retrograde granulitic rocks between 550° and 600°C. [R.A.H.]
Subjects:Charnockite; Geochemistry; Geologic thermometry; Gneisses; Granites; Igneous rocks; Intrusions; Laccoliths; Metamorphic rocks; Petrology; Phase equilibria; Plutonic rocks; Variscan Orogeny; Agly Massif; Europe; France; French Pyrenees; Pyrenees; Pyrenees-Orientales France; Western Europe
Abstract Numbers:85M/4846
Record ID:1985069847
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first