 | Zaitsev, A.N., Marks, M.A.W., Wenzel, T., Spratt, J., Sharygin, V.V., Strekopytov, S., Markl, G. (2012) Mineralogy, geochemistry and petrology of the phonolitic to nephelinitic Sadiman volcano, Crater Highlands, Tanzania. Lithos, 152. 66-83 doi:10.1016/j.lithos.2012.03.001 | Journal (article/letter/editorial) | | the phonolitic to nephelinitic Sadiman volcano, Crater Highlands, Tanzania A.N. Zaitsev a, b,⁎, M.A.W. Marks...2012 Available online 9 March 2012 Keywords: Nephelinite Phonolite Mineral composition Melt inclusions...inclusions Mineral stability fields Sadiman volcano a b s t r a c t Sadiman volcano is located in the Crater Highlands...Highlands area of northern Tanzania, which lies next to the western escarpment of the Gregory rift—a...phonolite lava and ijolite were observed within the nephelinite lavas with ijolite blocks occurring in phonolitic |  | | Journal (article/letter/editorial) | | ORIGINAL PAPER Nephelinite lavas at early stage of rift initiation (Hanang volcano, North Tanzanian...Lengai and Kerimasi volcanoes. Hanang volcano is the southernmost volcano in the North Tanzanian Divergence...the earliest stage of rift initiation. Hanang volcano erupted silica-undersaturated alkaline lavas with... apatite, and pyrrhotite. Lavas are low MgO-nephelinite with low Mg# and high silica content (Mg# = 22...considered as an important process leading to nephelinite magma, the complex zonation of cpx (e.g. abrupt |  | | Report (chapter) | | I T E Fossil hominids from the Laetolil Beds, Tanzania' Remains of x3 early hominids have beenfound in...in the Laetolil Beds in northern Tanzania, 3 ° miles south of Olduvai Gorge. Potassium-argon dating of...on the southern Serengeti Plains, in northern Tanzania. 20-30 miles from the camp site at Olduvai Gorge... 2015 Fossil hominidsfrom the Laetolil Beds, Tanzania x59 gave a thickness of about 5 m at the type...recognised that at least some of the tufts are of nephelinite composition. This picture was modified considerably |  | | Journal (article/letter/editorial) | | field-based study on carbonatites and nephelinites in Tanzania and for the PERALKCARB2011 workshop. This money...issue, dealing with the Sadiman volcano in the Crater Highlands of Tanzania. Given the focus of our research...carbonatites, and especially the Gregory Rift of Tanzania, make up the largest part of the current issue...available geological and geochemical data for nephelinite–melilitite–carbonatite volcanoes located in the...“small and large” volumes of carbonated olivine–nephelinite magma in the asthenosphere. The second paper |  | | Report (chapter) | | (Rosendahl 1987) and in parts of Kenya, the northern Tanzania basins are not enclosed within opposed faults...Valley and Neogene– Recent Volcanoes of Northern Tanzania. Geological Society, London, Memoirs, 33, 33–38...of pre-volcanic sedimentary basins in northern Tanzania derives from an exposure at the base of the rift...basins are underlain by Archaean rocks of the Tanzania Craton. They contain lakes that are seasonally...the Balangida Basin is occupied by the Hanang volcano which, on its northwestern side, sheds fanglomerates |  | | Journal (article/letter/editorial) | | 831 CEMENTATION OF THE FOOTPRINT TUFF, LAETOLI, TANZANIA Daniel S. BARKER§ and Kitty L. MILLIKEN Department...in this paper, the Pliocene Footprint Tuff in Tanzania records a series of rapidly deposited air falls...falls of crystal-vitric melilite nephelinite ash, rather than carbonatite as previously held. Footprints...Footprint Tuff, cementation, melilite nephelinite ash, Tanzania. Sommaire Comme nous le ré-interprétons...features is provided by the Laetolil Beds of northern Tanzania, one bedding surface of which displays Pliocene |  | | Journal (article/letter/editorial) | | forsterite–phlogopite ijolites at Oldoinyo Lengai Volcano, Tanzania: study of melt inclusions V.S. Sekisova a...minerals of ijolite xenoliths at Oldoinyo Lengai Volcano. Melt inclusions with different phase compositions...the Gulf of Aden through Ethiopia, Kenya, and Tanzania, is divided into two large tectonic zones: Western...volcanoes are divided into two main groups: nephelinite and basalt ones (Dawson, 2008). In the southern...example, Oldoinyo Lengai, which is located in Tanzania, ~16 km south of Lake Natron, near the Crater |  | Sharygin, Victor V., Kamenetsky, Vadim S., Zaitsev, Anatoly N., Kamenetsky, Maya B. (2012) Silicate–natrocarbonatite liquid immiscibility in 1917 eruption combeite–wollastonite nephelinite, Oldoinyo Lengai Volcano, Tanzania: Melt inclusion study. Lithos, 152. 23-39 doi:10.1016/j.lithos.2012.01.021 | Journal (article/letter/editorial) | | eruption combeite–wollastonite nephelinite, Oldoinyo Lengai Volcano, Tanzania: Melt inclusion study Victor...Silicate–carbonate liquid immiscibility Combeite wollastonite nephelinite Natrocarbonatite Oldoinyo Lengai a b s t r a...clinopyroxene) in the 1917 eruption combeite–wollastonite nephelinite at Oldoinyo Lengai. Silicate–melt inclusions...intermediate chamber when initial carbonated nephelinite melt was heterogeneous and represented a mixture...took place at high temperature and immiscible nephelinite and carbonatite liquids coexisted over a wide |  | Sharygin, Victor V., Pekov, Igor V., Zubkova, Natalia V., Khomyakov, Alexander P., Stoppa, Francesco, Pushcharovsky, Dmitry Yu. (2013) Umbrianite, K7Na2Ca2[Al3Si10O29]F2Cl2, a new mineral species from melilitolite of the Pian di Celle volcano, Umbria, Italy. European Journal of Mineralogy, 25 (4) 655-669 doi:10.1127/0935-1221/2013/0025-2306 | Journal (article/letter/editorial) | | species from melilitolite of the Pian di Celle volcano, Umbria, Italy VICTOR V. SHARYGIN1,*, IGOR V. PEKOV2...groundmass mineral in melilitolite of the Pian di Celle volcano, Umbria, Italy. It forms rectangular, lamellar...structure, melilitolite, kamafugite, Pian di Celle volcano, Italy. 1. Introduction Institute of Geology...for Umbria, the region of Central Italy where its type locality, the Pian di Celle volcano, is situated...background content of H2O (0.03 The Pian di Celle volcano is a part of a Pleistocene kamafugite-carbonatite |  | | Journal (article/letter/editorial) | | wollastonite and silicate magmas of Oldoinyo Lengai (Tanzania). Trace PT element partitioning of isovalent...key mineral of stage II (combeite wollastonite nephelinite). In recent times, during the OL explosive eruptions...been constrained experimentally for alkali-rich nephelinite magmas at low temperature (≤925 °C) and low pressure...undersaturated melt-carbonatite suites. AC We thank the Tanzania commission for science and technology (COSTECH)...of ijolite xenolith 10TL01 from Oldoinyo Lengai volcano. Abbreviations: Wo, wollastonite; Cpx, clinopyroxene; |  | | Journal (article/letter/editorial) | | Formation tuffs of the Rukwa Rift Basin, southwestern Tanzania L. Lawrence, C. Spandler, E.M. Roberts, H.L....Formation tuffs of the Rukwa Rift Basin, southwestern Tanzania, LITHOS (2020), https://doi.org/10.1016/j.lithos...occurring ~400 km beneath Ethiopia, Kenya and Tanzania, defined as the African superswell (Nyblade, 2011)...the Usangu Basin and Tukuyu Journal Pre-proof region of the Rungwe Volcanic Province (RVP) (Fig. 1b)...vent or source of appropriate age is known in the region for the NFT, which presents a further challenge |  | Braunger, S, Marks, M A W, Walter, B F, Neubauer, R, Reich, R, Wenzel, T, Parsapoor, A, Markl, G (2018) The Petrology of the Kaiserstuhl Volcanic Complex, SW Germany: The Importance of Metasomatized and Oxidized Lithospheric Mantle for Carbonatite Generation. Journal of Petrology, 59 (9) 1731-1762 doi:10.1093/petrology/egy078 | Journal (article/letter/editorial) | | 2005; Brooker & Kjarsgaard, 2011). The source region for most carbonatites and associated alkaline rocks...1990; 1991). The original size of the Kaiserstuhl volcano during its active period is difficult to reconstruct...limburgitic rocks Olivine nephelinites and a basanitic nephelinite contain phenocrysts of olivine (partly altered...with Ca and is highest in the olivine/basanitic nephelinite macrocrysts (up to 0.007 apfu; Fig. 11b). Downloaded...reconstruct the petrological evolution of this composite volcano. Depth of emplacement The only means to estimate |  | | Journal (article/letter/editorial) | | initial volatile concentrations in basanite/nephelinite magmas, from partial melting of volatile-bearing...crystallization from low-silica melts, with nephelinite, basanite, and melilitite primary compositions...Sodalite-bearing phonolite Ol Doinyo Lengai Sadiman Nephelinite and Basanite Eifel Saghro 8 basanite 6...Klaudius and Keller 2006; Zaitsev et al. 2012); and nephelinite and basanite, Eifel (white square = Mertes and...and Schmincke 1985; Wedepohl et al. 1994), nephelinite Saghro (black square = Berger et al. 2009). end-members |  | Salnikova, Ekaterina B., Chakhmouradian, Anton R., Stifeeva, Maria V., Reguir, Ekaterina P., Kotov, Alexander B., Gritsenko, Yulia D., Nikiforov, Anatoly V. (2019) Calcic garnets as a geochronological and petrogenetic tool applicable to a wide variety of rocks. Lithos, 338. 141-154 doi:10.1016/j.lithos.2019.03.032 | Journal (article/letter/editorial) | | Zima complex is located in the Tulun district of the Irkutsk Region, southern Siberia (Russia). The intrusion...1998. Peralkaline nephelinite–natrocarbonatite relationships at Oldoinyo Lengai, Tanzania. Journal of Petrology...Carbonatite Complex, Halls Creek Orogen, Kimberley region, Western Australia. Mineralogy and Petrology 110...carbonatite deposits of the Ziminski ore ED district (Eastern Sayan, Russia). Geology of Ore Deposits...1998. Phase relations of a carbonated high-CaO nephelinite at 0.2 and 0.5 GPa. Journal of Petrology 39, |  | | Book | | fossil vertebrates in tuffs of the spectacular volcano that I had mapped in 19909. Thereafter, from 1959...OLpuvaAiI GoRGE AND LAETOLIL, GREGORY RIFT VALLEY TANZANIA; OLORGESAILIE, KENYA I51 10. MARY D, LEAKEY...WHITE. Fossil hominids from the Laetolil Beds, Tanzania 157 ROBERT M. SHACKLETON. Geological Map of...artifacts from the Kapthurin Formation, Baringo District, Kenya 337 361 C. Tue Laxe TurKANA (RupoLpH)...It contains unique fossil localities in the Afar region of northern Ethiopia and the Omo valley in the |  | | Journal (volume) | | of Szeged On the cover: Map of the Carpathian region with type localities of new mineral species, rocks...History of mineralogy: The role of the Carpathian region in the 18th century..............................beneath Eyjafjallajökull volcano, and corresponding inflation of the volcano, a lateral eruption started...evolved FeTi-basalts of the neighbouring Katla volcano (MgO: 4.5-5.0%). During the historical period Katla...basalt (similar in composition to those of Katla volcano) and a dacitic melt, possibly left-over from the |
|
