 | Wandji, Pierre, Tchokona Seuwui, Dieudonné, Bardintzeff, Jacques-Marie, Bellon, Hervé, Platevoet, Bernard (2008) Rhyolites of the Mbépit Massif in the Cameroon Volcanic Line: an early extrusive volcanic episode of Eocene age. Mineralogy and Petrology, 94 (3) 271-286 doi:10.1007/s00710-008-0013-6 | Journal (article/letter/editorial) | | ORIGINAL PAPER Rhyolites of the Mbépit Massif in the Cameroon Volcanic Line: an early extrusive volcanic episode...Mbépit Massif, one of the oldest volcanoes of the Cameroon Volcanic Line, was built up during the Eocene...44.0 Ma). Located in the Eastern part of the Noun Plain, North-East of Foumbot, this massif is made up...flows. Such felsic lavas are rather rare in the Cameroon Volcanic Line. Most rhyolites are porphyritic...Supérieure, Université de Yaoundé I, BP 47, Yaoundé, Cameroon e-mail: pierrewandji@yahoo.fr D. Tchokona Seuwui |  | Wandji, P., Tsafack, J. P. F., Bardintzeff, J. M., Nkouathio, D. G., Kagou Dongmo, A., Bellon, H., Guillou, H. (2009) Xenoliths of dunites, wehrlites and clinopyroxenites in the basanites from Batoke volcanic cone (Mount Cameroon, Central Africa): petrogenetic implications. Mineralogy and Petrology, 96 (1) 81-98 doi:10.1007/s00710-008-0040-3 | Journal (article/letter/editorial) | | the basanites from Batoke volcanic cone (Mount Cameroon, Central Africa): petrogenetic implications P...Mount Cameroon, a PlioQuaternary stratovolcano and the most important volcano along the Cameroon Volcanic...as interstitial grains between chrysolite and diopside grains, i.e. Cr2O3rich magnetites (19 to 21 wt...rich lherzolite in the upper mantle beneath the Cameroon Volcanic Line. The AlIV/AlVI ratios remain high...xenoliths from the CVL. Fig. 1 a Location map of the Cameroon Volcanic Line (CVL). The main geologic features |  | Mbassa, Benoît Joseph, Njonfang, Emmanuel, Benoit, Mathieu, Kamgang, Pierre, Grégoire, Michel, Duchene, Stephanie, Brunet, Pierre, Ateba, Bekoa, Tchoua, Félix M. (2012) Mineralogy, geochemistry and petrogenesis of the recent magmatic formations from Mbengwi, a continental sector of the Cameroon Volcanic Line (CVL), Central Africa. Mineralogy and Petrology, 106 (3) 217-242 doi:10.1007/s00710-012-0227-5 | Journal (article/letter/editorial) | | formations from Mbengwi, a continental sector of the Cameroon Volcanic Line (CVL), Central Africa Benoît Joseph...et Minières, IRGM/ARGV Ekona, B.P. 370, Buéa, Cameroon E. Njonfang Laboratoire de Géologie, Ecole Normale...Supérieure, Université de Yaoundé I, B.P. 47 Yaoundé, Cameroon M. Benoit : M. Grégoire (*) : S. Duchene : P....Sciences, Université de Yaoundé I, B.P. 812, Yaoundé, Cameroon in a trachyte from neighboring Bamenda Mountains...parental magmas along the CVL. Introduction The Cameroon volcanic line (CVL) is a tectono-magmatic structure |  | | Journal (article/letter/editorial) | | notes Mt. Vulture is located in the Basilicata region, Southern Italy [N40.935 lat; E15.622 long] at...abundant and consist of discrete xenocrysts of Cr-diopside, olivine, pargasitic amphibole and phlogopite...LZ990 Amphibole peridotite Amphibole xenocryst Diopside xenocryst sp-lherzolite 3. Analytical methods...carbonate inclusions described in lherzolitic diopside macrocrysts from Lac de Gras kimberlite (Van Achterberg...pools within the veins contain relicts of primary diopside poikilitically enclosing olivine. Thinner veinlets |  | | Journal (article/letter/editorial) | | unzoned clinopyroxene have an evolution sequence of diopside-hedenbergite-aegirine along with an increase in...large-scale extensional event and mantle upwelling in the region [21]. The widely distributed bimodal volcanic rocks...and K),were garnet (for Fe), rhodonite (for Mn), diopside (for Ca), and chromite (for Cr), were used for...determined on a Bruker M90 ICPFe), rhodonite (for Mn), diopside (for Ca), and chromite (for Cr), were used for...clinopyroxin basalt and trachyandesite arethe augite-diopside; T1 type(Figure clinopyroxenes enesareindiopside |  | | Journal (article/letter/editorial) | | 1997) gives us the possibility to study the root region of the volcano. Located in the southern Tyrrhenian...archipelago) or older (e.g. the sea-mount Anchise, a few km west of Ustica, whose age is 3.6– 5.0 Ma, Savelli, 1988)...(Bousquet and Lanzafame, 1992). As to the source region of magmatism, trace elements patterns and Sr isotopic...types of clinopyroxene are present: – a salitic to diopside (Wo47–50, En35–40, Fs13–17; Mg# = 0.67–0.75) type...xenoliths, Mount Sidley volcano, Marie Byrd Land, West Antarctica. Mineral. Mag. 67 (4), 639 – 651. Griffin |  | | Book | | both parts, one and two. The second part discusses West-African magmatism associated with the early opening...of the processes operating in the mantle beneath West Africa is also illustrated in this second part and...ring complexes and the chapter devoted to the Cameroon line. A detailed review of African ring complexes...Northeastern Africa .............................. 4.3 West Central Africa .............................. 5...Physical, Petrographic and Chemical Features of South West Ugandan Quaternary Volcanism ... 9.1 Physical.. |  | | 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) . . . . . . . . . . . . . . . ...propagation into the southern Tyrrhenian backarc region. . . . . . . . . . . . . . . . . . . . . . . ....among the volcanic provinces of the Saharan zone, Cameroon volcanic line, Angola and Namibia, and the East...studies of xenoliths from the lower crust in the region are from the Arabian plate, where juvenile Neoproterozoic |
|
