The Carboniferous Baralacha La basaltic dykes (Upper Lahul, Ladakh): remnants of an early rifting event along the Indian northern plate

Détails

ID Serval
serval:BIB_63459D700C30
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
The Carboniferous Baralacha La basaltic dykes (Upper Lahul, Ladakh): remnants of an early rifting event along the Indian northern plate
Périodique
Bulletin de la Société Géologique de France
Auteur⸱e⸱s
Chauvet F., Lapierre H., Bosch D., Demant A., Bussy F., Vannay J.C., Mascle G.H., Brunet P., Cotten J., Keller F.
ISSN-L
0037-9409
Statut éditorial
Publié
Date de publication
2005
Peer-reviewed
Oui
Volume
176
Pages
499-511
Langue
anglais
Résumé
The Lower Carboniferous Baralacha La basaltic dykes were emplaced along
transtensional faults. The basalts exhibit tholeiitic and alkaline
affinities. The tholeiites are TiO2-poor, moderately enriched in light
rare earth (LREE), and display Nb and Ta negative and Th positive
anomalies. The alkali basalts, compared to the tholeiites, have higher
TiO2, rare earth and highly incompatible trace element contents and
greater LREE enrichments. The Nd and Pb isotope compositions of the
Baralacha La basalts suggest that they derive from the partial melting
of an enriched OIB mantle source. characterized by a HIMU component, and
contaminated by the lower continental crust. The Baralacha La dyke swarm
represent the remnants of an early rifting event on the northern Indian
passive margin.
Création de la notice
01/10/2012 19:07
Dernière modification de la notice
20/08/2019 14:19
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