Historic and Recent Eruptive Activity of Oldoinyo Lengai
作者： J. B. Dawson , J. Keller , C. Nyamweru
DOI: 10.1007/978-3-642-79182-6_2
关键词: Period (geology) 、 Impact crater 、 Olduvai Gorge 、 Geology 、 Geochemistry 、 Natrocarbonatite 、 Lava 、 Carbonatite
摘要: The eruptive history of Oldoinyo Lengai began <0.37Ma ago, with eruptions nephelinitic and phonolitic tuffs agglomerates from the southern, now extinct, crater. Following a period erosion, black ashes were erupted starting about 1250 new northern crater, which has been site subsequent activity; altered natrocarbonatite lava blocks occur in these tuffs. Natrocarbonatite was first recorded summit area 1904, though earlier verbal reports “snow” on mountain may refer to carbonatite ash.
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springerlink.com参考文章(22)
J. B. Dawson, The geology of Oldoinyo Lengai Bulletin of Volcanology. ,vol. 24, pp. 349- 387 ,(1962) , 10.1007/BF02599356
T. Alexander Barns, The Highlands of the Great Craters, Tanganyika Territory The Geographical Journal. ,vol. 58, pp. 401- 416 ,(1921) , 10.2307/1781718
J. B. Dawson, P. Bowden, G. C. Clark, Activity of the carbonatite volcano Oldoinyo Lengai, 1966 International Journal of Earth Sciences. ,vol. 57, pp. 865- 879 ,(1968) , 10.1007/BF01845369
J. B. DAWSON, Sodium Carbonate Lavas from Oldoinyo Lengai, Tanganyika Nature. ,vol. 195, pp. 1075- 1076 ,(1962) , 10.1038/1951075A0
Ross W Williams, James B Gill, Kenneth W Bruland, Ra-Th disequilibria systematics: Timescale of carbonatite magma formation at Oldoinyo Lengai volcano, Tanzania Geochimica et Cosmochimica Acta. ,vol. 50, pp. 1249- 1259 ,(1986) , 10.1016/0016-7037(86)90408-4
Celia Nyamweru, Activity of Ol Doinyo Lengai volcano, Tanzania, 1983–1987 Journal of African Earth Sciences. ,vol. 7, pp. 603- 610 ,(1988) , 10.1016/0899-5362(88)90110-8
R. M. MACINTYRE, J. G. MITCHELL, J. B. DAWSON, Age of Fault Movements in Tanzanian Sector of East African Rift System Nature. ,vol. 247, pp. 354- 356 ,(1974) , 10.1038/247354A0
J. B. Dawson, A supposed sövite from Oldoinyo Lengai, Tanzania: result of extreme alteration of alkali carbonatite lava Mineralogical Magazine. ,vol. 57, pp. 93- 101 ,(1993) , 10.1180/MINMAG.1993.057.386.09
J. B. Dawson, J. V. Smith, I. M. Steele, 1966 Ash Eruption of the Carbonatite Volcano Oldoinyo Lengai: Mineralogy of Lapilli and Mixing of Silicate and Carbonate Magmas Mineralogical Magazine. ,vol. 56, pp. 1- 16 ,(1992) , 10.1180/MINMAG.1992.056.382.01
J. B. Dawson, M. S. Garson, B. Roberts, Altered former alkalic carbonatite lava from Oldoinyo Lengai, Tanzania: Inferences for calcite carbonatite lavas Geology. ,vol. 15, pp. 765- 768 ,(1987) , 10.1130/0091-7613(1987)15<765:AFACLF>2.0.CO;2