• Citer

Les camptonites du mont Cameroun, Cameroun, Afrique

par Ngounouno, Ismaïla;Déruelle, Bernard;Montigny, Raymond;Demaiffe, Daniel
Référence Comptes rendus. Géoscience, 338, 8, page (537-544)
Publication Publié, 2006-06

Article révisé par les pairs

• Accès en ligne
• Détails
• Contenu
• Statistiques

Résumé :

Camptonites have been discovered at Mount Cameroon. They contain phenocrysts of olivine + clinopyroxene + plagioclase ± kaersutite ± bi and ocelli of nepheline or analcite and carbonates. 87Sr/86Sri values are similar to those of the basalts of Mount Cameroon (≈ 0.7033). The camptonites are interpreted as resulting from fractional crystallization of a basaltic magma generated by a low degree of melting of an infra-lithospheric metasomatized mantle tapped by huge lithospheric cracks. To cite this article: I. Ngounouno et al., C. R. Geoscience 338 (2006). © 2006 Académie des sciences.