Zobrazeno 1 - 4
of 4
pro vyhledávání: '"M'hamed Megartsi"'
Autor:
René C. Maury, Hervé Bellon, M'hamed Megartsi, Serge Fourcade, Amina Louni-Hacini, Joseph Cotten, Daniel Hermitte, Christian Coulon, Alain Coutelle
Publikováno v:
Lithos. 62:87-110
During the Neogene, a magmatic change from calc-alkaline to alkaline types occurred in all the regions surrounding the western Mediterranean. This change has been studied in Oranie (western Algeria). In this area, potassic to shoshonitic calc-alkalin
Autor:
Mohamed Zerka, Michel Grégoire, Jean-Pierre Lorand, Jean-Yves Cottin, Mohamed Midoun, M'Hamed Megartsi
Publikováno v:
Comptes Rendus Geoscience. 334:387-394
Numerous ultramafic xenoliths occur within the Ain–Temouchent volcanic complex (Northwestern Oranie, Algeria). Most of them are type I mantle tectonites (lherzolites and harzburgites) and composite xenoliths (harzburgite/clinopyroxenite) are rare.
Autor:
Christian Coulon, Alain Coutelle, Alain Piqué, Ramon Capdevila, Hervé Bellon, Jean-Pierre Réhault, M'hamed Megartsi, Belkacem Semroud, Aziouz Ouabadi, Amina Louni-Hacini, Joseph Cotten, Ouardia Belanteur, Serge Fourcade, René C. Maury, M'hammed El Azzouzi, Jean Hernandez
Publikováno v:
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science. 331:159-173
A 1 200 km-long linear magmatic belt extends along the Mediterranean coast of the Maghreb from Eastern Tunisia to Morocco. This belt is mainly composed of Langhian calc-alkaline metaluminous to peraluminous granitoids and associated andesites/dacites
Autor:
M'hamed Megartsi, Gérard Bossière
Publikováno v:
Périodiques Scientifiques en Édition Électronique.
This paper presents the first petrologic study of pyroxenite inclusions in a new variety of rushayite discovered in 1971. The chemical study of minerals allows one to assume that they are high pressure cumulates issued from the upper mantle. They pro