 | Minissale, Silvia, Zanetti, Alberto, Tedesco, Dario, Morra, Vincenzo, Melluso, Leone (2019) The petrology and geochemistry of Nyiragongo lavas of 2002, 2016, 1977 and 2017 AD, and the trace element partitioning between melilitite glass and melilite, nepheline, leucite, clinopyroxene, apatite, olivine and Fe-Ti oxides: a unique scenario. Lithos, 332. 296-311 doi:10.1016/j.lithos.2019.02.023 | Journal (article/letter/editorial) | | com/locate/lithos The petrology and geochemistry of Nyiragongo lavas of 2002, 2016, 1977 and 2017 AD, and the...81100 Caserta, Italy d JOC, UN-MONUSCO, UN-Goma, Congo b a r t i c l e i n f o Article history: Received...2019 Available online xxxx a b s t r a c t The Nyiragongo lava of 2002, and the new one flowing from the...found in the Nyiragongo lavas. These new data indicate that the magmatic system of the Nyiragongo is in a...All rights reserved. 1. Introduction The Nyiragongo volcano belongs to the Virunga Volcanic Province |  | | Journal (article/letter/editorial) | | BP 190, Kinshasa XI, Democratic Republic of the Congo diffusion-controlled melting models), or in a phlogopitebearing...Metasomatism · Virunga volcanic field · Mugogo volcano · Carbonatite Introduction The Virunga volcanic...emitting basalts, basanites and tephrites, and the Nyiragongo erupting foiditic lavas (melilitites, 13 29...west branch are indicated (TA Toro-Ankole, SK South Kivu, R Rungwe). Stippled areas mark the extension of...its eight stratovolcanoes (N Nyamuragira, Ny Nyiragongo, M Mikeno, K Karisimbi, V Visoke, S Sabinyo, |  | | Journal (article/letter/editorial) | | combeite- and götzenite-bearing nephelinite at Nyiragongo, Virunga Volcanic Province in the East African...a c t The lavas and pyroclastic rocks of Nyiragongo volcano (East African Rift) range in composition...combeite nephelinite. In peralkaline nephelinites at Nyiragongo, titanium is hosted in mineral assemblages with...götzenite-bearing melilite nephelinite from Nyiragongo, Democratic Republic of Congo (Sahama, 1961, 1978; Sahama and...and Hill, 1998). The melilite nephelinite from Nyiragongo has provided type material for the mineral species |  | Chakrabarti, Ramananda, Basu, Asish R., Santo, Alba P., Tedesco, Dario, Vaselli, Orlando (2009) Isotopic and geochemical evidence for a heterogeneous mantle plume origin of the Virunga volcanics, Western rift, East African Rift system. Chemical Geology, 259 (3) 273-289 doi:10.1016/j.chemgeo.2008.11.010 | Journal (article/letter/editorial) | | active Virunga volcanoes, Nyiragongo and Nyamuragira, are 15 km apart. Nyiragongo shows unusual compositions...major, trace elements and Nd–Sr–Pb isotopes in Nyiragongo and Nyamuragira lavas including samples from...from 2002, 2003 and 2004 eruptions. The youngest Nyiragongo lavas are ultrapotassic, ultrasodic and have...basanites and tephrites, distinct from the foiditic Nyiragongo lavas. Both volcanic products show enrichment...Dy/Yb suggests residual garnet in the source(s). Nyiragongo and Nyamuragira lavas show high Nb/U similar |  | | Journal (article/letter/editorial) | | 5% normative nepheline) are restricted to Kiejo volcano in the southern portion of the province. Rungwe...CO2-rich peridotite at pressures that span the garnet-spinel transition. A geochemical comparison of Rungwe...individual volcanoes, although lavas from each volcano reflect a range in degree of melting. Significantly...1): Toro-Ankole (Uganda), Virunga (Zaire-Rwanda), Kivu (Zaire-Burundi) and Rungwe (Tanzania). In these...basanites are common in the southern provinces (Kivu and Rungwe). Detailed studies have also revealed |  | | Journal (article/letter/editorial) | | CONTAMINATION IN THE POTASSIC SUITE OF THE KARISlMBI VOLCANO (VIRUNGA, AFRICAN RIFT VALLEY) M. DE M U L D E...contamination in the potassic suite of the Karisimbi Volcano (Virunga, African Rift Valley). In: S. Deutsch...silica-undersaturated volcanics from the Karisimbi volcano (Virunga region, Western African Rift Valley, Rwanda...MIKENOoO LK I MUHAVURA O O GAHING~/Z o NYIRAGONGO RWANDA LAKE KIVU EAST AFRIC~ -ORO-'A.KOL~-t RU~GA t\...African Rift System. Adjacent Toro-Ankole and South Kivu fields are also shown. 1983; Vollmer and Norry |  | | Journal (article/letter/editorial) | | 40.509–40.866) along with the data of Karisimbi volcano form trends on isotope diagrams towards the EM...part of Virunga, and Muhavura is the easternmost volcano of the province. Visoke, one of the eight main...summit crater lake (Fig.1). Visoke, along with Nyiragongo and Nyamuragira, are the only volcanoes that...(Bagdasaryan et al. 1973), while for the nearby Karisimbi volcano ages range from 30,000 to 120, 000 years (De Mulder...1992, 1998). However, the last eruption of Visoke volcano occurred in 1957, when two small adventive cones |  | | Journal (article/letter/editorial) | | INTRODUCTION Esch (1901) described Mt Etinde as a volcano built (1983) and of Peterson (1989a, 19894). •Present...of Birmingham on May 30, 2015 Mt Etinde is a volcano situated on the southwestern flank of of leucitites...lavas. ana upwards limit oi sconae <$"' Gabon : Congo Garnet leucite nephelinites Hauyne nephelinites...of Mt Etinde after Nkoumbou (1990) modified; (c) north-iouth cross-iection at 9°7'E; Kwele cliff limits...group is briefly described as a complement active volcano) volcanic events (Deruelle etal., 1983; to Table |  | | Journal (article/letter/editorial) | | the mantle lithosphere. In their study of the volcano Karisimbi, De Mulder et al. (1986) and Rogers et...continental rift. It stretches from the Red Sea in the north to its southern extremities in Malawi and can be...Western Rift. However, even the most easterly volcano, Muhavura, has a very youthful morphology and appears...greater elevation. two currently active volcanoes, Nyiragongo and Nyamuragira; a contrast made all the more...<15 km. Nyamuragira is a more typical Virunga volcano erupting K-basanites and evolved derivatives such |  | Onuma, Naoki, Ninomiya, Shuji, Nagasawa, Hiroshi (1981) Mineral/groundmass partition coefficients for nepheline, melilite, clinopyroxene and perovskite in melilitenepheline basalt, Nyiragongo, Zaire. GEOCHEMICAL JOURNAL, 15 (4) 221-228 doi:10.2343/geochemj.15.221 | Journal (article/letter/editorial) | | nepheline, perovskite in melilite and basalt, Nyiragongo, Zaire NAOKIONUMA,*SHUJININOMIYA2 and HIROSHINAGASAWA3...structure basalt, control" for nepheline-, Nyiragongo volcano, mechanism. melilite and perovskite, values...University of Tokyo, from the central crater of Nyiragongo volcano, Zaire. Micro scopic investigation by M....University of Tokyo for giving us the valuable sample, Dr. M. TORIUMI of Ehime University and Drs. D. P. BLAN...earth elements (REE). Sc, and Sr for perovskite, spinel and melilite. Earth Planet. Sci. Lett. 46, 431-437 |  | | Journal (article/letter/editorial) | | perpotassic basaltic rocks were collected from Nyiragongo and Nyamuragira volcanoes located about 300 km...west of Lake Victoria in Africa. The rocks from Nyiragongo are nephelinite, melilitire and leucitite. Phenocrystic...picroilmenite megacrysts and groundmass comprising olivine, spinel, perovskite, apatite, calcite, dolomite, ankerite...zone and the east side of median valley in the north of Azores Islands, and by drilling at the IPOD/DSDP...in No. 15 1. Olivine bronzite tholeiite, Iwate volcano, N.E. Japan 1 111 0.20 0.08 2. Olivine tholeiite |  | Oppenheimer, Clive, Moretti, Roberto, Kyle, Philip R., Eschenbacher, Al, Lowenstern, Jacob B., Hervig, Richard L., Dunbar, Nelia W. (2011) Mantle to surface degassing of alkalic magmas at Erebus volcano, Antarctica. Earth and Planetary Science Letters, 306 (3) 261-271 doi:10.1016/j.epsl.2011.04.005 | Journal (article/letter/editorial) | | surface degassing of alkalic magmas at Erebus volcano, Antarctica Clive Oppenheimer a,b,c,⁎, Roberto...Mining and Technology, Socorro, NM 87801, USA g Volcano Hazards Team, U.S. Geological Survey, 345 Middlefield...Continental intraplate volcanoes, such as Erebus volcano, Antarctica, are associated with extensional tectonics...the degassing of the magmatic system at Erebus volcano using melt inclusion data and high temporal resolution...Introduction Erebus, the world's southernmost active volcano, offers an exceptional opportunity to examine the |  | | Book | | Volcanology Series editor Karoly Nemeth, Palmerston North, New Zealand Editor-in-Chief IAVCEI, Barcelona...outside the lakes. Such ash can be from the host volcano or from afar, giving valuable information about...cases, they capture a history of unrest of the volcano itself—precious data that predate modern monitoring...alkaline, has its own story to tell about its host volcano and its surroundings. The chapters in this monograph...Jean Vandemeulebrouck, and Johan C. Varekamp 1 Volcano-Hydrologic Hazards from Volcanic Lakes . . . . |  | Clague, David A., Frey, Frederick A., Garcia, Michael O., Huang, Shichun, McWilliams, Michael, Beeson, Melvin H. (2016) Compositional heterogeneity of the Sugarloaf melilite nephelinite flow, Honolulu Volcanics, Hawai‘i. Geochimica et Cosmochimica Acta, 185. 251-277 doi:10.1016/j.gca.2016.01.034 | Journal (article/letter/editorial) | | SiO2-undersaturated lavas, 98 such as those from Nyiragongo Volcano (Tazieff, 1977; Tedesco et al., 2007), are...lava composition similar to those erupted at Nyiragongo, the Sugarloaf eruption 101 produced a 15-m...into the 117 underlying shield lavas of Ko‘olau Volcano. Clague and Dalrymple (1987) refer to these lavas...olivine microphenocrysts with small enclosed Cr-spinel, 19-29 vol% melilite 215 microphenocrysts, 10-23...rates of strongly SiO2-undersaturated lava at Nyiragongo volcano in 476 1977 (Tazieff, 1977). The interstitial |  | | Journal (article/letter/editorial) | | accompanied by minor amounts of apatite, carbonate, spinel, glass and, rarely, monticellite. The rocks are...consistent with minor fractionation of olivine and Cr-spinel from melts originating at depths of 130±140 km...(partly primary), Mg±Mn-ilmenite, perovskite, Ti±Cr-spinel, Ti-magnetite, monticellite, and glass. UML can...made up by nepheline, phlogopite, perovskite, Cr-spinel, carbonates, titanomagnetite and glass with accessory...minerals Oxide minerals include perovskite, Cr-spinel and titanomagnetite, which occur with differing |  | | Journal (article/letter/editorial) | | to eruption), and shallow sources local to the volcano (e.g. revolatilisation of seawater, or other crustal...and SO2 fluxes can vary quite dramatically at one volcano during different phases of activity (best shown...shown, for example, at Soufriere Hills Volcano, Montserrat; Edmonds et al., 2001, 2002; Villemant et al....average data from multiple fumaroles at the same volcano in order to estimate a realistic mean fluid composition...of gases from some mafic intraplate volcanoes (Nyiragongo, Kilauea). 115 other important features are |  | | Journal (article/letter/editorial) | | Gaussberg olivine leucitite Gaussberg is a single volcano occurring on the coast of eastern Antarctica at...K2O content of the rock. The liquidus phase is Cr spinel, followed by olivine and then clinopyroxene and...close to NNO in the late stages, as determined from spinel compositions, Fe2O3 contents in leucite and Mg...units above NNO, which is fairly close to the older spinel-based fO2 estimate (Foley, 1985). The REE partition...leucite is a major factor in the evolution of the Nyiragongo lavas, which are similar apart from large variations |  | JAMBON, A., BOUDOUMA, O., FONTEILLES, M., GUILLOU, C. Le, BADIA, D., BARRAT, J.-A. (2008) Petrology and mineralogy of the angrite Northwest Africa 1670. Meteoritics & Planetary Science, 43 (11) 1783-1795 doi:10.1111/j.1945-5100.2008.tb00643.x | Journal (article/letter/editorial) | | section. With subordinate clinopyroxene and chrome-spinel microphenocrysts (0.2– 0.5 mm), they represent... NWA 1670 is a small (29 g) stone found in the north African desert (exact location unknown) and bought...less pronounced than that of olivines. Hercynitic spinel microphenocrysts are also present in this set of...are broken with fractures filled with groundmass, spinel in the groundmass having a different composition...xenocrysts. Their composition is similar to that of the spinel microcrysts in D’Orbigny (Mittlefehldt et al. 2002) |  | | Book | | HongKong Barcelona Budapest Professor Dr. A. B. KAMPUNZU Professor Dr. R. T. LUBALA Laboratoire de Petrologie...thank Springer-Verlag, the publishers, especially Dr. W. ENGEL (Geosciences Editorial) for the prompt...Permian times in Thdhak province (Fig. 2) along the north-south trending Tesoffi trough, on the eastern margin...northeastern Africa, especially in the Nile River valley, north from Khartoum towards the Egyptian frontier, the...continental trough on the southern borders of the Congo and Thnzania cratons, though comparable in size |  | Bailey, Ken, Lloyd, Felicity, Kearns, Stuart, Stoppa, Francesco, Eby, Nelson, Woolley, Alan (2005) Melilitite at Fort Portal, Uganda: Another dimension to the carbonate volcanism. Lithos, 85 (1) 15-25 doi:10.1016/j.lithos.2005.03.019 | Journal (article/letter/editorial) | | Uvalde nephelinite (Texas) and Nyiragongo volcano (nephelinite, Zaire (D.R. Congo)), as detailed in Deer et...with close similarities to those from Vulture volcano (Italy). A melilite from Vulture (Stoppa and Principe...monticellite, rosenhahnite reaction rims on quartz, and spinel rims on magnetite, none of which are found in the...al. (2003). A good specific case is the Vulture volcano, Italy, (which also has similar features in mineralogy |  | 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) | | petrology of the phonolitic to nephelinitic Sadiman volcano, Crater Highlands, Tanzania A.N. Zaitsev a, b,⁎...Mineral stability fields Sadiman volcano a b s t r a c t Sadiman volcano is located in the Crater Highlands...All rights reserved. 1. Introduction Sadiman volcano (3°11′S, 35°25′E), also known as Satiman, is part...as the 1.6–1.5 Ma Oldeani basalt–trachyandesite volcano (Dawson, 2008; Mollel et al., 2008; 2011). ⁎ Corresponding...Lemagarut, Oldeani and Ngorongoro (Fig. 1a). The volcano is well known having been previously cited as the |  | | Book (edition) | | co-author, teacher, mentor, colleague and friend, Dr. Joseph A. Mandarino. -Malcolm E. Back Fleischer's...they are: Dr. Peter Bayliss, Dr. Ernst A.J. Burke, Dr. Anton and hakhmouradian,Robert Gault, Dr. Julian...Låszl6 Horvåth, Dr. Uwe Kolitsch, Locock,Gaspare Malet.to,Dr. Roger Mitchell, Renato Pagano. Dr. Ole Petersen...Robert Ramik,Andy Roberts, hallit, Dr. Chris Stanley,Tony Steede and Dr. ThomasWitzke. upport and encouragementof...Red Sea covc, known as Sharm Abhur, about 30 km north of Jiddah. Saudi Arabia. 74, 500. 78. 235-236. CM |  | | Book | | manuscript. I thank my two sons Dr. Neal S. Gupta (Bryant University, USA), Dr. Rick S. Gupta of Weizmann.... . . . . . . . . . . . . . . . . . . . . 2.14 Spinel . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . 521 About the Author Dr. Alok Krishna Gupta was born on December 25, 1942...Raja Ramanna Fellow of the Atomic Energy Commission. Dr. Gupta has received many awards in his distinguished...phases commonly associated with lamproitic rocks. Mg-spinel (MgAl2O4), perovskite, titanomagnetite, pseudo-brookite |  | Jambon, A., Barrat, J. A., Boudouma, O., Fonteilles, M., Badia, D., Göpel, C., Bohn, M. (2005) Mineralogy and petrology of the angrite Northwest Africa 1296. Meteoritics & Planetary Science, 40 (3) 361-375 doi:10.1111/j.1945-5100.2005.tb00388.x | Journal (article/letter/editorial) | | (Mittlefehldt et al. 2002), we did not find hercynitic spinel. The same is true for the Fe-Ca-Al-Ti silicate...mineralogy (phase compositions, absence of hercynitic spinel, and rhönite in NWA 1296), which we explain by...was advocated previously that this results from spinel fractionation (Mittlefehldt and Lindstrom 1990;...and because of the high degree of partial melting spinel is not residual. The angritic CaO/Al2O3 value is...are necessary: Al2O3 depletion might result from spinel fractionation as suggested previously (Mittlefehldt |  | Chen, Heng, Savage, Paul S., Teng, Fang-Zhen, Helz, Rosalind T., Moynier, Frédéric (2013) Zinc isotope fractionation during magmatic differentiation and the isotopic composition of the bulk Earth. Earth and Planetary Science Letters, 369. 34-42 doi:10.1016/j.epsl.2013.02.037 | Journal (article/letter/editorial) | | from Kilauea Iki lava lake, Hawaii, and Hekla volcano, Iceland, which both show clear evidence of having...0.41%, and two basaltic samples from the Nyiragongo volcano which have d66Zn of 0.22 and 0.37%. The d66Zn...d66Zn of four andesitic samples from Merapi volcano are homogeneous with values between 0.23 and 0.25%...from Kilauea Iki lava lake, Hawaii, and Hekla volcano, Iceland. These two volcanic systems represent...the southeast of Hawaii Island. When the Kilauea volcano erupted in 1959, part of the lava ponded into a |
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