Dawson, J. B. (1998). Peralkaline nephelinite–natrocarbonatite relationships at Oldoinyo Lengai, Tanzania. Journal of Petrology, 39(11-12), 2077-2094.

Reference Search (possible matching items)

	*KLAUDIUS, J, KELLER, J (2006) Peralkaline silicate lavas at Oldoinyo Lengai, Tanzania. Lithos, 91 (1) 173-190 doi:10.1016/j.lithos.2006.03.017*	Journal (article/letter/editorial)
	com/locate/lithos Peralkaline silicate lavas at Oldoinyo Lengai, Tanzania Jurgis Klaudius ⁎, Jörg Keller Institut für...June 2006 Abstract A detailed study of Oldoinyo Lengai has led to the recognition of two major cone-building...phonolitic stage, Lengai I, forms the southern cone. The recent nephelinitic Lengai II developed following...collapse event over Lengai I. Petrography of Lengai II lavas show that nephelinite is combeite- and wollastonite-bearing...wollastonite-bearing. All Oldoinyo Lengai lavas are peralkaline and highly evolved in terms of low Mg#
	Nabyl, Zineb, Massuyeau, Malcolm, Gaillard, Fabrice, Tuduri, Johann, Iacono-Marziano, Giada, Rogerie, Grégory, Le Trong, Emmanuel, Di Carlo, Ida, Melleton, Jérémie, Bailly, Laurent (2020) A window in the course of alkaline magma differentiation conducive to immiscible REE-rich carbonatites. Geochimica et Cosmochimica Acta, 282. 297-323 doi:10.1016/j.gca.2020.04.008	Journal (article/letter/editorial)
	(calcio-carbonate type) and silicate melts (nephelinite to phonolite type). The experimental data shows...consisted of a mixture between synthetic hydrated nephelinite powder and synthetic calcite, in a ratio 90:10...(bulk composition from Kjarsgaard, 1998). The nephelinite powder was made from the mixture of synthetic... the silicate liquid compositions vary from nephelinite to phonolite, with SiO2 contents from 44.3 ±...African Rift, including data from the Ol Doinyo Lengai volcano in Tanzania (De Moor et al., 2013), the most
	Sherrod, David R., Magigita, Masota M., Kwelwa, Shimba (2013) Geologic map of Oldonyo Lengai (Oldoinyo Lengai) Volcano and surroundings, Arusha Region, United Republic of Tanzania. Open-File Report 2013-1306. US Geological Survey doi:10.3133/ofr20131306	Report (issue)
	Oldonyo Lengai (Oldoinyo Lengai) Volcano and Surroundings, Arusha Region, United Republic of Tanzania By David...Oldonyo Lengai (Oldoinyo Lengai) and surroundings, Arusha Region, United Republic of Tanzania: U.S. Geological... . . . . . . . . . . . . 17 Oldonyo Lengai . . . . . . . . . . . . . . . ..... . . . . . . . . . 32 Age of Oldonyo Lengai . . . . . . . . . . . . . . . .... . . 32 Previously Published Ages from Oldonyo Lengai . . . . . . . . . . . . . . .
	Lee, Cin-Ty, Rudnick, Roberta L., McDonough, William F., Horn, Ingo (2000) Petrologic and geochemical investigation of carbonates in peridotite xenoliths from northeastern Tanzania. Contributions to Mineralogy and Petrology, 139 (4) 470-484 doi:10.1007/s004100000144	Journal (article/letter/editorial)
	carbonates in peridotite xenoliths from northeastern Tanzania Received: 30 July 1999 / Accepted: 5 February...xenoliths from the East African Rift in northeastern Tanzania occur as intergranular patches with accessory...located in the rift valley proper in northern Tanzania (Dawson and Smith 1988). These sites are near...near the well-known carbonatite volcanoes, Ol Doinyo Lengai and Kerimasai. The host lava for both Pello and...garnet-bearing lithologies, the lithosphere beneath this region probably extends no deeper than 90 km, consistent
	*(1986) Role of tephra in the preservation of fossils in Cenozoic deposits of East Africa. Special Publication, 25. Geological Society of London. 339-344 doi:10.1144/gsl.sp.1986.025.01.28*	Report (chapter)
	Uganda; Songhor and Koru, Kenya; and Laetoli, Tanzania. Some, and perhaps most, of the carbonatite ash...carbonatite eruptions were from O1 Doinyo Lengai, in northern Tanzania (Fig. 1), which has discharged both... ~" ' ~" "~'" .,~ "~"'",~ Tanzania . 2o - .x" ~ . . Oldoinyo Lengai Olduvai G o r g e * ~ '~-~...carbonatite volcanic rocks of Kerimasi volcano in Tanzania (Hay 1983) and the Tinderet centre in Kenya (Deans...Gold 1973), and natrocarbonatite lava of Oldoinyo Lengai has 6180 of c. +7%0 (O'Neil & H a y 1973). Isotopic
	Sekisova, V.S., Sharygin, V.V., Zaitsev, A.N., Strekopytov, S. (2015) Liquid immiscibility during crystallization of forsterite-phlogopite ijolites at Oldoinyo Lengai Volcano, Tanzania: study of melt inclusions. Russian Geology and Geophysics, 56 (12) 1717-1737 doi:10.1016/j.rgg.2015.11.005	Journal (article/letter/editorial)
	forsterite–phlogopite ijolites at Oldoinyo Lengai Volcano, Tanzania: study of melt inclusions V.S. Sekisova...inclusions in minerals of ijolite xenoliths at Oldoinyo Lengai Volcano. Melt inclusions with different phase compositions...ijolite; nyerereite; natrocarbonatite; Oldoinyo Lengai Introduction The East African Rift System, expanding...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
	Keller, J., Zaitsev, A.N. (2012) Reprint of “Geochemistry and petrogenetic significance of natrocarbonatites at Oldoinyo Lengai, Tanzania: Composition of lavas from 1988 to 2007”. Lithos, 152. 47-55 doi:10.1016/j.lithos.2012.08.012	Journal (article/letter/editorial)
	signiﬁcance of natrocarbonatites at Oldoinyo Lengai, Tanzania: Composition of lavas from 1988 to 2007”☆...Available online 27 August 2012 Keywords: Oldoinyo Lengai Natrocarbonatite Average composition and compositional...Peralkaline nephelinite a b s t r a c t The natrocarbonatites of Oldoinyo Lengai, Tanzania, are unique...petrology. The historical activity of Oldoinyo Lengai has seen changes from nephelinitic to natrocarbonatitic...relationship to the silicate magmas of Oldoinyo Lengai. The “type” natrocarbonatite major and trace element
	Keller, J., Zaitsev, A.N. (2012) Geochemistry and petrogenetic significance of natrocarbonatites at Oldoinyo Lengai, Tanzania: Composition of lavas from 1988 to 2007. Lithos, 148. 45-53 doi:10.1016/j.lithos.2012.05.022	Journal (article/letter/editorial)
	signiﬁcance of natrocarbonatites at Oldoinyo Lengai, Tanzania: Composition of lavas from 1988 to 2007 J...Available online 1 June 2012 Keywords: Oldoinyo Lengai Natrocarbonatite Average composition and compositional...Peralkaline nephelinite a b s t r a c t The natrocarbonatites of Oldoinyo Lengai, Tanzania, are unique...petrology. The historical activity of Oldoinyo Lengai has seen changes from nephelinitic to natrocarbonatitic...relationship to the silicate magmas of Oldoinyo Lengai. The “type” natrocarbonatite major and trace element
	*Foley, Stephen F., Fischer, Tobias P. (2017) An essential role for continental rifts and lithosphere in the deep carbon cycle. Nature Geoscience, 10 (12) 897-902 doi:10.1038/s41561-017-0002-7*	Journal (article/letter/editorial)
	been quantified for the Natron–Magadi area on the Tanzania/Kenya border and is estimated5 to release 1 ±0...carbon: Mount Nyiragongo at 5 Mt C yr–1 and Ol Doinyo Lengai at 0.7 Mt C yr–1 (ref. 13). The estimate of...equivalents16,17. Carbonatites at localities such as Ol Doinyo Lengai in East Africa release significant mantle-derived...tapped: 41 of 42 carbonatites in Kenya, Uganda and Tanzania were emplaced in the last 40 million years22,...carbonatites at 123– 133 Ma in Malawi and 1,040 Ma in Tanzania indicate a recurrence of CO2-rich magmatism, which
	Mangler, Martin F., Marks, Michael A.W., Zaitzev, Anatoly N., Eby, G. Nelson, Markl, Gregor (2014) Halogens (F, Cl and Br) at Oldoinyo Lengai volcano (Tanzania): Effects of magmatic differentiation, silicate–natrocarbonatite melt separation and surface alteration of natrocarbonatite. Chemical Geology, 365. 43-53 doi:10.1016/j.chemgeo.2013.11.027	Journal (article/letter/editorial)
	com/locate/chemgeo Halogens (F, Cl and Br) at Oldoinyo Lengai volcano (Tanzania): Effects of magmatic differentiation...Natrocarbonatite Halogen fractionation Bromine TXRF Oldoinyo Lengai Leaching a b s t r a c t Halogen abundances of...and their alteration products from Oldoinyo Lengai (Tanzania) are compared to those of associated silicate...alteration. In the associated silicate rocks at Oldoinyo Lengai concentrations of all three halogens increase from...melilitite to evolved combeite–wollastonite nephelinite, demonstrating their incompatible behavior during
	Rock, N. M. S. (1976) The comparative strontium isotopic composition of alkaline rocks: New data from Southern Portugal and East Africa. Contributions to Mineralogy and Petrology, 56 (2) 205-228 doi:10.1007/bf00399605	Journal (article/letter/editorial)
	ijolite (e.g. LeBas, 1975); iii) Contamination of nephelinite by crustal material (Wimmenauer, 1966); iv) Simple...syenite, Ocholminarot village plateau Phonolitic nephelinite, type Tvpn3, Gotjope hill Carbonatite, ring-dyke...ring-dyke at edge of plateau, S. Ruri Phonolitic nephelinite, type Tvpn2, Sikiri Point Carbonatite, Sokolo...Sokolo point Mount Meru ME2 ME5 ME1 ME8 ME10 Nephelinite, near Park Headquarters, Momela Gate Trachyte with...with anorthoclase, Fig Tree Arch Nephelinite, lava flow at Boma la Megi Kaersutite-rich pyroxenite, Kitoto
	Simandl, George J., Paradis, Suzanne (2018) Carbonatites: related ore deposits, resources, footprint, and exploration methods. Applied Earth Science, 127 (4) 123-152 doi:10.1080/25726838.2018.1516935	Journal (article/letter/editorial)
	[(Na,K,Cax)2–x(CO3)], known from Ol Doinyo Lengai volcano (Tanzania). A reﬁnement to the IUGS chemical...(<600°C) natrocarbonatitic lavas from Ol Doinyo Lengai, Tanzania that contain 38–40 wt.% combined Na2O...Roberts 1984; Zaitsev et al. 2013); Kerimasi, Tanzania (Hay 1983; Zaitsev 2010; Guzmics et al. 2011);... PARADIS 2010) to very recent (e.g. Ol Doinyo Lengai, Tanzania, which is considered an active volcano)... Carbonatites with mineralogy similar to Ol Doinyo Lengai natrocarbonatite may have been relatively
	Jung, Seung Gi, Choi, Sung Hi, Ji, Kang Hyeun, Ryu, Jong-Sik, Lee, Der-Chuen (2019) Geochemistry of volcanic rocks from Oldoinyo Lengai, Tanzania: Implications for mantle source lithology. Lithos, 350. 105223 doi:10.1016/j.lithos.2019.105223	Journal (article/letter/editorial)
	Geochemistry of volcanic rocks from Oldoinyo Lengai, Tanzania: Implications for mantle source lithology...Geochemistry of volcanic rocks from Oldoinyo Lengai, Tanzania: Implications for mantle source lithology...Geochemistry of volcanic rocks from Oldoinyo Lengai, Tanzania: 2 Implications for mantle source lithology...(S.H. Choi) 18 19 20 Abstract 21 22 Oldoinyo Lengai is the only active carbonatite volcano within the...the East African Rift Valley in 23 northern Tanzania. The volcano is dominated by peralkaline silicate
	Filina, Maria I., Aksenov, Sergey M., Sorokhtina, Natalia V., Chukanov, Nikita V., Kononkova, Natalia N., Belakovskiy, Dmitriy I., Britvin, Sergey N., Kogarko, Lia N., Chervonnyi, Alexandr D., Rastsvetaeva, Ramiza K. (2019) The new mineral fluorbarytolamprophyllite, (Ba,Sr,K)₂[(Na,Fe²⁺)₃TiF₂][Ti₂(Si₂O₇)₂O₂] and chemical evolution of lamprophyllite-group minerals in agpaitic syenites of the Kola Peninsula. Mineralogy and Petrology, 113 (4) 533-553 doi:10.1007/s00710-019-00664-0	Journal (article/letter/editorial)
	Russian Academy of Sciences, Chernogolovka, Moscow region 142432, Russia 5 Fersman Mineralogical Museum...al. 1994), peralkaline nephelinite lava of the Oldoinyo Lengai volcano, Tanzania (Dawson 1998), alkaline...alkaline basalts of the Eifel paleovolcanic region, Germany (Chukanov et al. 2011, 2012, 2014), fenites of...and tectonophysical studies of the Kola-Karelian region, the Paleozoic carbonatite and alkaline massifs...Bearpaw (Chakhmouradian and Mitchell 1999), Ol Doinyo Lengai (Dawson 1998), P2-West Kimberlite (Kaur and
	Baudouin, Céline, Parat, Fleurice (2015) Role of volatiles (S, Cl, H2O) and silica activity on the crystallization of haüyne and nosean in phonolitic magmas (Eifel, Germany and Saghro, Morocco) American Mineralogist, 100 (10) 2308-2322 doi:10.2138/am-2015-5318	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...Central Sodalite-bearing phonolite Ol Doinyo Lengai Sadiman Nephelinite and Basanite Eifel Saghro 8 basanite...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
	Néron, Alexandre, Bédard, Léo, Gaboury, Damien (2018) The Saint-Honoré Carbonatite REE Zone, Québec, Canada: Combined Magmatic and Hydrothermal Processes. Minerals, 8 (9) 397 doi:10.3390/min8090397	Journal (article/letter/editorial)
	is located in the Saguenay region of Québec, Canada (Figure 1). This region is comprised of three petrographic...carbonatite-related fluid. The best example is Ol Doinyo Lengai, which features salt fumaroles [64]. However... B.; Hamilton, D.; Peterson, T. Peralkaline nephelinite/carbonatite liquid immiscibility: Comparison...in experiments and natural lavas from oldoinyo lengai. In Carbonatite Volcanism; Springer Nature: Berlin/Heidelberg...43–55. [CrossRef] Von Eckermann, H. The Alkaline District of Alnö Island (Alnö Alkalina Område); A. b. Kartografiska
	*Frostick, L. E., Renault, R. W., Reid, I., Tiercelin, J. J. - Eds.* (1986) Sedimentation in the African Rifts. Special Publication Vol. 25. Geological Society of London**	Report (volume)
	Chad, Ethiopia, Kenya, Malawi, Nigeria, Sudan, Tanzania and Uganda. However, in the last few years there...Depth to metamorphic basement in the Koobi Fora region from seismic and gravity data. 75 Watkins, R.T...record of Pleistocene deposits, Lake Natron basin, Tanzania... Bonnefille, G. & R„ Tiercelin, Sedimentation...countries—Chad, Eth¬ iopia, Kenya, Malawi, Nigeria, Sudan, Tanzania and Uganda. Geographical representation is very...waterfall dams and in rivers. There is thus no region of the world to match African lakes for the study
	*Wang, Zhen-Yu, Fan, Hong-Rui, Zhou, Lingli, Yang, Kui-Feng, She, Hai-Dong (2020) Carbonatite-Related REE Deposits: An Overview. Minerals, 10 (11) 965 doi:10.3390/min10110965*	Journal (article/letter/editorial)
	(Russia), and natrocarbonatite in the Ol Doinyo Lengai volcano (Tanzania) mainly consisting of Na-K-Ca carbonates...calcite/dolomite carbonatite. fenite mainly consists Region [61,62]. The ore-forming is extremely complex,...carbonatite, such as Oldoinyo Lengai sodic carbonatite in northern Tanzania [19,57,58]. However, carbonatites...grassland, Baotou City, Inner Mongolia Autonomous Region [61,62]. The ore-forming process is extremely complex...silicate and carbonatite rocks from Oldoinyo Lengai volcano (Tanzania). J. Afr. Earth Sci. 2018, 142, 193–206
	*Baker, B. H. (1958) Geology of the Magadi Area. Report* 42. Geological Survey of Kenya**	Report (issue)
	were that part of the Rift Valley not a volcanic region, it is unlikely that the deposits would have accumulated...(a) Olorgesailie Volcanic Series (b) Shanamu (2) Ol Keju Nero Basalts (3) Kirikiti Basalts (4) Lengitoto...sediment (5) The Plateau Trachyte Series (6) Ol Doinyo Nyegi Volcanics (7) Ash and scoriaceous lava vents...through Ol Doinyo Nyegi hill Fig. 5.- -Section in a stream one mile south-west of Ol Doinyo Nyegi Fig...area was formerly in the Masai Extra-Provincial District but is now in Southern Province, that part east
	*Bishop, Walter W. (1978) Geological Background to Fossil Man* - Recent research in the Gregory Rift Valley, East Africa. The Geological Society of London, London.**	Book
	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)... Cates ery — 7 ’ co) te \| Ded uit Ai im, ol + ’ ai _ ie gta ve o* FT eee = = pre...It contains unique fossil localities in the Afar region of northern Ethiopia and the Omo valley in the
	Huston, David L., Mernagh, Terrence P., Hagemann, Steffen G., Doublier, Michael P., Fiorentini, Marco, Champion, David C., Lynton Jaques, A., Czarnota, Karol, Cayley, Ross, Skirrow, Roger, Bastrakov, Evgeniy (2016) Tectono-metallogenic systems — The place of mineral systems within tectonic evolution, with an emphasis on Australian examples. Ore Geology Reviews, 76. 168-210 doi:10.1016/j.oregeorev.2015.09.005	Journal (article/letter/editorial)
	1910; Both and Williams, 1968: Fig. 2A). This district is zoned mineralogically relative to the ~360...pyrite- to siderite-dominated. The Bingham Canyon district in NU Utah, western USA is also strongly zoned...extinct carbonatite volcanos (e.g. Ol Doinyo Lengai in northern Tanzania: Hay, 1989), and Zn deposits (e...Hackett and Bischoff, 1973). Although the Ol Doinyo Lengai system is not known to contain significant...(Kelley et al., 2004) and deposits in the Gamsberg district in South Africa (Rozendaal et al., 1986; Ryan
	*Middlemost, Eric A. K. (1985) Magmas and magmatic rocks* - An introduction to igneous petrology. Longman.**	Book
	differentiation 51 rocks Differentiation in wholly ol The diversity of magmatic liquid magmas Fractional...rocks 121 124 126 129 129 Contents Chapter 7 (ol Nad) General statement Textures and modal TS Geochemistry... Guttard studied the rocks of the Auvergne region of central France and recognized many recently...work (1894-1933) on the igneous rocks of the Oslo region of Norway; (b) the publication in 1895 of Alfred...uniquely able to provide substantial data about the region where they originated. The term primary magma should
	*Gallotti, Rosalia, Mussi, Margherita - Eds.* (2018) The Emergence of the Acheulean in East Africa and Beyond. Springer International Publishing. doi:10.1007/978-3-319-75985-2**	Book
	discoveries, dated to 1.8 Ma at Olduvai Gorge in Tanzania. During these years, he was working for the Institut...African Early Acheulean of Peninj (Lake Natron, Tanzania) . . . . . 129 Fernando Diez-Martín, Policarpo...the TK Acheulean Site (Bed II, Olduvai Gorge, Tanzania): New Excavations 50 Years After Mary Leakey ...Dar es Salaam, P.O. Box 35050, Dar es Salaam, Tanzania Rita Melis Dipartimento di Scienze chimiche e...Acheulian occupation at Amanzi Springs, Uitenhage District, Cape Province. Annals of the Cape Provincial
	*Hazen, Robert M., Jones, Adrian P., Baross, John A. - Eds.* (2013) Carbon in Earth. Reviews in Mineralogy and Geochemistry Vol. 75. Mineralogical Society of America**	Report (volume)
	Carbonatite lava flow from an eruption of Oldoinyo Lengai, Tanzania. Photo courtesy of Tobias Fischer. Series...more than 10,000 prospectors to the semi-desert region, and inevitably led to the recognition of diamond...Coal Mine 45, Kopeisk, Urals R3 Is River, Isovsky District, Urals C C I, To MCo CoF Pla I M M N, Ta Pla...Luobusha ophiolite complex, Autonomous Tibetan Region; (2) within the Mengyin kimberlite field, Linyi...three carbides that are unknown from any other region: qusongite (WC; Fang et al. 2009; Shi et al. 2009)
	*Okrusch, Martin, Frimmel, Hartwig E. (2020) Mineralogy. Springer Berlin Heidelberg. doi:10.1007/978-3-662-57316-7*	Book
	coccoliths. From plankton sample of the Kimberley region, Australia, kindly provided by CSIRO Tasmania (picture...which the transport medium can move from the source region to the locus of ore precipitation; 5 an energy...crystal faces of the cube {100}. Kondjor, Chabarowsk district, Eastern Siberia, Russia hexagonal with 6/m2/m2/m...deposits of the Namib Desert and in the offshore region of Namibia. Many occurrences of diamond are known...Kokchetau Massif of Siberia, the Western Gneiss region of Norway and the Saxonian Erzgebirge in Germany

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Nephelinite from Ol Doinyo Lengai, Ngorongoro District, Arusha region, Tanzania

Nephelinite from
Ol Doinyo Lengai, Ngorongoro District, Arusha region, Tanzania