 | | Journal (article/letter/editorial) | | Virunga) volcanic province (Fig. 1) is situated north of Lake Kivu. The most important and still active volcanoes...province are Nyamuragira and Nyiragongo. According to Sahama (1973) the Nyiragongo volcano is mostly composed...of phonolitic to tephritic foidite. The Nyamuragira volcano shows tephritic to phonolitic rocks too....basaltic rocks of ~outh Kivu is about 0.3. The volcanic activity in the South Kivu provirce began in Lower...Lueshe is located in the Ruindi Mountains of North Kivu (NE-gaire)~ about 40 km SSW of Lake ~ w a r d |  | | Journal (article/letter/editorial) | | 1.09) are close to the values found for the Nyamuragira basanites. But the most striking feature is the...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...active volcanoes located only 12 km apart, the Nyamuragira emitting basalts, basanites and tephrites, and...west branch are indicated (TA Toro-Ankole, SK South Kivu, R Rungwe). Stippled areas mark the extension of |  | | Journal (article/letter/editorial) | | is recorded in the western branch of the EARS at Kivu during this time. In contrast, the Early Rift Development...distinct from xenolith suites recovered further north. Lee lP and Rudnick (1999) established a compositionally... from which rifting has of propagated to the north and south during multiple periods in the past 20...Volcanic Province at ca. 17 Ma (Mesko et al., 2014) and Kivu ca. 20 Ma (Pouclet et al., 2016) is coincident with...while the border fault is thought to have formed in Kivu by ca. 10 Ma (Ebinger, 1989a). The formation of |  | | Book | | as a separate mineral, but only as a variety of biotite. In this discussion, the chronology of the first...Buttgenbach H. (1 947) Les Mineraux de Belgique et du Congo Beige. 573 p. Paris: Ed. Dunod. Cesbron, F. (1985)...the government of the Democratic Republic of the Congo introduced a new admin istrative subdivision for...Haut-Loma mi Province. What formerly was called the Bas-Congo Province is known today by the name of Central Kongo...abbreviated (B = Belgium; D.R. Congo = Democratic Republic of the Congo; F = France). 4. The biographical |  | | 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...two currently active volcanoes, Nyiragongo and Nyamuragira; a contrast made all the more dramatic by the...volcanoes are separated by <15 km. Nyamuragira is a more typical Virunga volcano erupting K-basanites and evolved |  | | Journal (article/letter/editorial) | | subduction at the Eocene Cordilleran margin of North America: a petrogenetic study from the southwestern...MINERALOGIST Vol. 41, No. 6, 2003 Composition of biotite from granitic rocks of the Canadian Appalachian...the sediment-hosted Grimsey hydrothermal field north of Iceland—T. Kuhn, P.M. Herzig, M.D Hannington...Archaea on a Mariana forearc serpentinite mud volcano: Ocean Drilling Program Leg 195 —Michael J. Mottl...Great Smoky Mountains National Park, Tennessee, and North Carolina, USA— Jane M. Hammarstrom, Robert R. Seal |  | | Journal (article/letter/editorial) | | anorthoclase to sodic sanidine. Kaersutite and titan biotite are restricted to the phenocrysts of the trachyandesite...indicate that olivine, clinopyrox kaersutite, biotite and alkali feldspar are the dominant fractionated...01ivine; Cpx,ciinopyroxene; Amp, amphibole; Bi, biotite; tr, trace (less than 0.1%); -, absent; P1, plagioclase;...atom%)で alkalis"の ト 成 分 は 平 均5.4 あ る。 欝 陵 島 の Nyamuragira(Aoki で あ り,イ タ リ ア のVico の も の よ りKとNaに リュ... detected. Table a, kaersutite; e, titan-biotite; 7. Representative b, ferrokaersutite; Mg. |  | | 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 |  | | Journal (article/letter/editorial) | | Petrology of Calc-alkaline Lavas from Ruapehu Volcano and Related Vents, Taupo Volcanic Zone, New Zealand...hornblende-bearing andesites from nearby Maungakatote volcano. Type 5 lavas are clinopyroxene-olivine-phyric...arc into the continental crustal environment of North Island, New Zealand and represents oblique subduction...zone extends approximately 300 km north-northeast across the North Island from Ohakune to White Island...part but narrows northwards and southwards. This volcano-tectonic depression (Taupo-Rotorua depression; |  | | Journal (article/letter/editorial) | | Mana et al., na (2015) suggest that within the North Tanzania Divergence, melting depths range from 140-85...In particular, the composition of lavas from Nyamuragira, Karisimbi, Sabinyo, Muhavura, old Bisoke, and...enriched (excluding carbonatites) are from the Virunga-Kivu region. More evolved samples (i.e., lower MgO) are...for a Nd/144Nd, in comparison to Turkana and the North Kenya Rift that have less Journal Pre-proof radiogenic... re rhyolites there are additional roles for biotite, amphibole, aenigmatite, and zircon (MacDonald |  | Guarino, Vincenza, Wu, Fu-Yuan, Lustrino, Michele, Melluso, Leone, Brotzu, Pietro, Gomes, Celso de Barros, Ruberti, Excelso, Tassinari, Colombo Celso Gaeta, Svisero, Darcy Pedro (2013) U–Pb ages, Sr–Nd- isotope geochemistry, and petrogenesis of kimberlites, kamafugites and phlogopite-picrites of the Alto Paranaíba Igneous Province, Brazil. Chemical Geology, 353. 65-82 doi:10.1016/j.chemgeo.2012.06.016 | Journal (article/letter/editorial) | | Serra Negra (83.4–83.7 Ma, biotite separates), Salitre (82.5–86.3 Ma, biotite separates and 79.0–94.5 Ma...whole-rock), Araxá (77.4–97.6 Ma, biotite separates) and Tapira (71.2–87.2 Ma, biotite separates); Machado (1991)...areas (Fig. 1), as also observed elsewhere (e.g., North Atlantic Craton, Tappe et al., 2008, 2011; Tanzanian...1985. Petrology and geochemistry of the Nyamuragira Volcano, Zaire. Journal of Volcanology and Geothermal...152, 143–175. De Mulder, M., 1985. The Karisimbi Volcano, (Virunga). Mus´ee Royale de l'Afrique Centrale |  | | Report (volume) | | DELGADO, H. Particles from the plume of Popocatepetl volcano, Mexico - the FESEM/EDS approach 123 MCGONIGLE...emissions 149 GERLACH, T. M. Elevation effects in volcano applications of the COSPEC 169 CARN, S. A., KRUEGER...proxies for plume chemistry at Soufrière Hills volcano, Montserrat 203 Part III Field investigations...high-frequency gas monitoring at Soufrière Hills volcano, Montserrat 219 vi CONTENTS WARDELL, L. I...emissions from fumarolic ice towers, Mount Erebus volcano, Antarctica 231 VASELLI, O., TASSI, F, MINISSALE |  | | Report (issue) | | 5-18, 1961. The potassium-argon ages of rough biotite concentrates from the late Paleozoic microcline...the Tsypka River are at about 170 m . y. Pure biotite concentrates from the postJurassic granites of...56-75, 1961. Potassium-argon age measurements on biotite and other minerals give the following time scale...83-91, 1961. Age measurements on muscovite and biotite by the K/ Ar method give the following tie-points...Tagilo-Kurshinsky region, Central Urals, 380; biotite from Lower AGE DETERMINATIONS 5 Ordovician |  | SANTACROCE, R., BERTAGNINI, A., CIVETTA, L., LANDI, P., SBRANA, A. (1993) Eruptive Dynamics and Petrogenetic Processes in a very Shallow Magma Reservoir: the 1906 Eruption of Vesuvius. Journal of Petrology, 34 (2) 383-425 doi:10.1093/petrology/34.2.383 | Journal (article/letter/editorial) | | how greatly and rapidly the eruptive style of a volcano can change during a single event (Rittmann, 1962;...already present at very shallow depth beneath the volcano when the eruption started. This body formed over...clinopyroxene (7-10 vol.%), rare plagioclase, and biotite phenocrysts. Leucite grains are very abundant in...groundmass, where plagioclase, clinopyroxene, and biotite are relatively scarce. Apatite is abundant, mainly...and typically contain leucite aggregates. Rare biotite and plagioclase phenocrysts occur sporadically |  | | Report (issue) | | H. Particles from the plume of Popocatépetl volcano, Mexico — the FESEM/EDS Ws approach McGONIGLE...emissions 149 GERLACH, T. M. Elevation effects in volcano applications of the COSPEC 169 CARN, S. A., KRUEGER...proxies for plume chemistry at Soufriere Hills volcano, Montserrat Part III Field investigations of degassing...high-frequency gas monitoring at Soufriere Hills volcano, Montserrat ING, Vi CONTENTS WARDELL, L. J...emissions from fumarolic ice towers, Mount Erebus volcano, Antarctica VASELLI, O., TASSI, F., MINISSALE, |  | | Book (edition) | | 1943, six weeks after the first appearance of the volcano. See pp. 316-18 {Three Lions Inc., New York) Arthur...been given by Professor Tom F. W. Barth, Dr Lucien Cahen, Dr Lauge Koch, Professor L. Egyed, Professor...colleagues at the Lamont Geological Observatory), Dr R. W. Girdler, Professor W. Nieuwenkamp and Professor...constructive criticisms. To my wife and fellow geologist, Dr Doris L. Reynolds, I am, as always, more deeply indebted...Sub-stages of the Quaternary Ice Age The Great Lakes of North America Recession of the Scandinavian Ice Sheet |  | Konecke, Brian A., Fiege, Adrian, Simon, Adam C., Linsler, Stefan, Holtz, Francois (2019) An experimental calibration of a sulfur-in-apatite oxybarometer for mafic systems. Geochimica et Cosmochimica Acta, 265. 242-258 doi:10.1016/j.gca.2019.08.044 | Journal (article/letter/editorial) | | Xirouchakis et al., 2001), reactions involving biotite, magnetite and orthoclase (Wones and Eugster, 1965;...T. and Tailby N. (2014) Variation in XANES in biotite as a function of orientation, crystal composition...into magmatic processes: A case study at Nyamuragira volcano, Africa. Geochim. Cosmochim. Acta 226, 149–173...1126– 1128. Wones D, Eugster H (1965) Stability of biotite–experiment theory and application. Am. Mineral |  | | Book | | richer in Fe, like amphiboles (7 Sect. 11.4.3), biotite (7 Sect. 11.5.2), chlorite (7 Sect. 11.5.5), tourmaline...and anhedral quartz (grey), whereas flakes of biotite (black) are subordinate. Reichenbach (Dzerżoniów)...nearly 38 Chapter 2 · Minerals . Fig. 2.7 Biotite in nephelinesyenite pegmatite, Saga Quarry, Tvedalen... amphiboles (. Fig. 11.35), micas, especially biotite (. Figs. 2.3, 2.7), olivine (. Fig. 2.8), as well...Cretaceous age are widely exposed on the coasts of the North and Baltic Sea, e.g., in southern England and on |  | | Report (chapter) | | incorporated in jarosite, the trioctahedral micas (e.g. biotite) have been observed to be the most susceptible...observed chalcanthite among the sublimates at Nyamuragira Volcano, Zaire, and Africano and Bernard (2000) reported...composition in the fumarolic environment of Usu Volcano, Japan. There are a number of localities that use...alteration in the fumarolic environment of Usu volcano, Hokkaido, Japan. In Varekamp JC, Rowe GL Jr (eds)...sulfate occurrences at Navarana Fjord, central North Greenland. Bull Geol Soc Denmark 37:175-180 Jambor |  | | Report (chapter) | | proportions of both K and A1 include sanidine, biotite, leucite and rare kalsilite; the molar ratio K/A1...classed the Prairie Creek, Arkansas, lamproite with biotite-peridotites but the Leucite Hills rocks with leucite...shallowcrustal country-rock fragments) are biotitite, biotite-clinopyroxenite and pyroxenite xenoliths that are...Basin (WKB) magmatic and volcanic rocks (Mount North phlogopite lamproite, vesicular 81 mile vent phlogopite...Hague; HAL, Hallock; END, Endlich; NP, North Pilot Butte; NT, North Table Butte; ST, South Table Butte; |  | | Book | | series is phlogopite: (OH)zMg3Si3Al01o. I K In biotite, the octahedral sheet contains Mg and Fe 2 + and...layers including biotite are well known (RuTHRUFF, 1941), such as biotite-chlorite or biotite-vermiculite...weathering products and is called "hydrobiotite". But biotite is fragile in hydrosphere, so that in soils and...MinnesotaHe Bowlingite Zn,Mg Sauconite f Ledikite (Biotite) Vermiculite Jefferisite K (Lepidomelane) l TABLES...seemed composed of fragments of magnesian minerals (biotite, chlorite, and others). LAVEZARD (1906) studied |  | | Report (volume) | | White Mountain alkaline igneous provinces, eastern North America 433 vi Contents UPTON, B. G. J. & EMELEUS...example, biotites from the Poohbah Lake syenite in north-western Ontario have been dated at around 2.7 Ga...Monteregian Hills and White Mountain provinces of eastern North America (Eby), for example, show no obvious progression...example, biotites from the Poohbah Lake syenite in north-western Ontario have been dated at around 2.7 Ga...Monteregian Hills and White Mountain provinces of eastern North America (Eby), for example, show no obvious progression |  | | Book | | Tables Springer-Verlag Berlin Heidelberg GmbH Prof. Dr. Herve Chamley University ofLille I F-59655 Villeneuve...put together information arising from European, North-American, and other laboratories, whose respective...not automatically comprise only hydrogenous or volcano-hydrothermal minerals and may include noticeable.... 473 New-Zealand Region, Cenozoic . . . . 474 North Atlantic Domain, Late Mesozoic . 476 Other Regions...Regions. 496 19.2.1 North Atlantic Basins at Albian Time. . 496 500 19.2.2 North Atlantic Ocean, Cretaceous |  | | Book | | Berlin Heidelberg New York London Paris Tokyo Prof. Dr. JOSEPH V. SMITH Department of Geophysical Sciences...Chicago 5734 S. Ellis Avenue Chicago IL 60637 USA Dr. WILLIAM L. BROWN CRPG Centre National de la Recherche...Nyiragongo, anorthite-rich nodule, N (Sahama 1978); North Otago, gabbroic inclusions in mafic phonolite (Price...megacrysts 0.05-0.06 (Gutmann and Martin 1976), North Otago, gabbro, pI 0.01, 0.02 (Price and Wallace...plagioclase-pyroxene-amphibole rocks, and 2-50 ppm for biotite granites. Almost all the higher values (> 20 ppm) |  | | Report (volume) | | ON THE COVER: Top Left: Image from Kawah Ijen volcano, Java, Indonesia in 1998. It shows sulfur being...near-atmospheric pressure. Rev Mineral Geochem 73:143-165 Baker DR, Moretti R (2011) Modeling the solubility of sulfur...certain minerals, such as pyroxene, amphibole, or biotite (Studley et al. 2002) included with the sulfur-bearing...reef, Bushveld complex. J Petrol 41:545-561 Bandura DR, Baranov VI, Tanner SD (2002) Detection of ultratrace...ICP-MS study of melt inclusions from Galunggung Volcano, Indonesia. Geochim Cosmochim Acta 65:3147-3164 |
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