 | | Journal (article/letter/editorial) | | The mafic mineralogy of the Pandë massif, Tikar plain, Cameroon: implications for a peralkaline affinity...ABSTR ACT The Pandé massif is a small (4.963.4 km) subvolcanic complex of the Cameroon Line striking W ...in all syenites, trachytes and granites. Rare biotite flakes are encountered in the coarse-grained or...voluminous Mayo Darlé granite bodies crystallized. K EY WORDS : Plutono-volcanism, Pandé, Tikar plain, Cameroon...of the Cameroon Line are more abundant, relatively in its middle part, between Foumban and Banyo (Fig. |  | | Journal (article/letter/editorial) | | larger Quiriri Pluton, which consists of subalkalic biotite (± hornblende) syenogranites, and associated volcanics...units within the massive facies, as well as the biotite syenogranites from the Quiriri Pluton. Typical...note inclusions of fluorite and quartz in the core region. (C) Arfvedsonite crystals interstitial to quartz...BSE) surrounded by bright yellowish-green (lighter region in BSE image) intermediate and rim zones. Compositional...flatter, though with some dispersion in the HREE region, which may be related to the low measured concentrations |  | | Journal (article/letter/editorial) | | post-magmatic sodic amphibole and Al-poor (“tetrasilicic”) biotite. © 2006 Elsevier B.V. All rights reserved. Keywords:...amphiboles (Hoshino, 1986) in association with Al-poor biotite (Czamanske and Dillet, 1988). 2. Local geology...were 15 kV, 20 nA and 5 μm for both amphibole and biotite. Maximum pulse integration times were between 10...estimates as originally recommended by Schumacher. For biotite, all Fe is presented as Fe2+, and formulae were...1984); 4 — Mulanje (Platt and Woolley, 1986); 5 — Pandé (Njonfang and Moreau, 2000); 6 — Puklen (Marks et |  | Vásquez, Paulina, Glodny, Johannes, Franz, Gerhard, Romer, Rolf L., Gerdes, Axel (2009) Origin of fayalite granitoids: New insights from the Cobquecura Pluton, Chile, and its metapelitic xenoliths. Lithos, 110 (1) 181-198 doi:10.1016/j.lithos.2009.01.001 | Journal (article/letter/editorial) | | composition of the lower crust of the forearc in this region. Triassic granitoids with minor gabbros occur as...that the Triassic magmatism in today's forearc region could have been generated in a suprasubduction...plagioclase, clinopyroxene, amphibole and minor olivine, biotite and orthopyroxene. Fayalite granitoids are medium-grained...In both granitoids and gabbros, amphibole and biotite are late magmatic minerals. Medium-grained fayalite-free...quartz, potassic feldspar, plagioclase and minor biotite. The suite of hybrid rocks consists of tonalite |  | | Report (issue) | | Hanley, Terry M. Seward, and Frederik Reutten 9. Cameroon Line alkaline magmatism (central Africa): A reappraisal...fingerprints of mantle metasomatism beneath Nyos volcano (Cameroon volcanic line) . . . . . . . . . . . . . . . ...14. New 40Ar-39Ar ages and petrogenesis of the Massif d’Ambre volcano, northern Madagascar . . . . ....propagation into the southern Tyrrhenian backarc region. . . . . . . . . . . . . . . . . . . . . . . ....among the volcanic provinces of the Saharan zone, Cameroon volcanic line, Angola and Namibia, and the East |
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