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Xenoliths evidence for a refractory oceanic mantle percolated by basaltic melts beneath the Kerguelen Archipelago

Michel Gregoire, Jean-Pierre Lorand, Jean-Yves Cottin, Andre Giret, Nadine Mattielli and Dominique Weis
Xenoliths evidence for a refractory oceanic mantle percolated by basaltic melts beneath the Kerguelen Archipelago
European Journal of Mineralogy (October 1997) 9 (5): 1085-1100

Abstract

Alkali basalts from the Kerguelen Is. have entrained many mantle peridotites (harzburgites and dunites) in addition to various other ultramafic and mafic xenoliths. The harzburgites and the dunites were equilibrated in the spinel peridotite stability field (T=850-1150 degrees C). They attest to the existence of a metasomatized refractory upper mantle beneath the southeastern province of the Kerguelen Is. To date no fertile mantle lherzolite has been found in this area. Details are discussed concerning the petrology, mineralogy, geochemistry, and formation processes of the harzburgites and dunites found in these islands. (Auth. mod.)


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 9
Serial Issue: 5
Title: Xenoliths evidence for a refractory oceanic mantle percolated by basaltic melts beneath the Kerguelen Archipelago
Affiliation: Universite Jean Monnet, Departement de Geologie-Petrologie-Geochimie, Saint Etienne, France
Pages: 1085-1100
Published: 199710
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 64
Accession Number: 1997-077055
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 6 tables, geol. sketch maps
S40°00'00" - S20°00'00", E60°00'00" - E100°00'00"
Secondary Affiliation: CNRS, Paris, FRA, FranceUniversite Libre de Bruxelles, Brussels, BEL, Belgium
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States
Update Code: 199724
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