Le magmatisme et le metamorphisme pan-africains temoins d'amincissement crustal dans la region de Laouni (Hoggar Central, Algerie)?

Translated title of the contribution: (Is Pan-African magmatism and metamorphism related to crustal thinning in the Laouni area (Central Hoggar, Algeria)?

J. Y. Cottin, M. Guiraud, J. P. Lorand

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The petrological data of the Laouni area are very different from those of the northern part of the Hoggar Massif. At Laouni, ultrabasic-basic layered bodies intruded a HT/LP metamorphic series and granites. These features hardly agree with the Himalayan-type collision which has been proposed for the northern part of the Hoggar, but on the contrary are consistent with extension during the Pan-African ages. It is supposed that this extensional regime existed in the southern part of the Central Hoggar. There is an abridged English version. -English summary

Original languageFrench
Pages (from-to)1345-1351
Number of pages7
JournalComptes Rendus - Academie des Sciences, Serie II
Volume311
Issue number11
Publication statusPublished - 1990

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