Mineralogical and geochemical characterization of ashes from an early phase of the explosive September 2007 eruption of Oldoinyo Lengai (Tanzania)

Journal of African Earth Sciences

Volumn 58, Issue 5, 2010, Pages 752-763

  Mattsson, Hannes B ^a   Reusser, Eric ^a  

^a ETH ZURICH   (Switzerland)

Author keywords

Eruption; Explosive; Magma mixing; Natrocarbonatite; Nephelinite; Oldoinyo Lengai

Indexed keywords

CARBONATITE; CHEMICAL COMPOSITION; EXPLOSIVE VOLCANISM; IGNEOUS GEOCHEMISTRY; MAGMA CHEMISTRY; MINERALOGY; NEPHELINITE; VOLCANIC ASH; VOLCANIC ERUPTION;

OLDOINYO LENGAI; TANZANIA;

EID: 78149467855     PISSN: 1464343X     EISSN: 1464343X     Source Type: Journal    
DOI: 10.1016/j.jafrearsci.2010.06.005     Document Type: Article

References (42)

1. Baker M.B., Wyllie P.J. Liquid immiscibility in the nephelinite-carbonate system at 25kbar and implications for carbonatite origin. Nature 1990, 346:168-170.
2. Church A.A., Jones A.P. Silicate-carbonate immiscibility at Oldoinyo Lengai. Journal of Petrology 1995, 36(4):869-889.
3. Dawson J.B. The geology of Oldoinyo Lengai. Bulletin of Volcanology 1962, 24:349-387.
4. Dawson J.B., Powell D.G. The Natron-Engaruka explosion crater area, northern Tanzania. Bulletin Volcanologique 1969, 33:791-817.
5. Dawson J.B., Bowden P., Clark G.C. Activity of the carbonatite volcano Oldoinyo Lengai, 1966. International Journal of Earth Sciences 1968, 57(3):865-879.
6. 9 from Oldoinyo Lengai, Tanzania. Journal of Geology 1989, 97:365-372.
7. Dawson J.B., Pinkerton H., Norton G.E., Pyle D. Physiochemical properties of alkali carbonatite lavas: data from the 1988 eruption of Oldoinyo Lengai, Tanzania. Geology 1990, 18:260-263.
8. Dawson J.B., Smith J.V., Steele I.M. 1966 ash eruption of the carbonatite volcano Oldoinyo Lengai: mineralogy of lapilli and mixing of silicate and carbonate magmas. Mineralogical Magazine 1992, 56:1-16.
9. Dawson J.B., Pinkerton H., Pyle D.M., Nyamweru C. June 1993 eruption of Oldoinyo Lengai, Tanzania; exceptionally viscous and large carbonatite lava flows and evidence for coexisting silicate and carbonate magmas. Geology 1994, 22:799-802.
10. Dawson J.B., Pinkerton H., Norton G.E., Pyle D.M., Browning P., Jackson D., Fallick A.E. Petrology and geochemistry of Oldoinyo Lengai lavas extruded in November 1988: magma source, ascent and crystallization. Carbonatitite volcanism - Oldoinyo Lengai and the Petrogenesis of Natrocarbonatites 1995, 47-69. Springer Verlag. K. Bell, J. Keller (Eds.).
11. Dawson J.B., Keller J., Nyamweru C. Historic and recent eruptive activity of Oldoinyo Lengai. Carbonatitite Volcanism - Oldoinyo Lengai and the Petrogenesis of Natrocarbonatites 1995, 4-22. Springer Verlag. K. Bell, J. Keller (Eds.).
12. Dawson J.B., Pyle D.M., Pinkerton H. Evolution of natrocarbonatite from a wollastonite nephelinite parent: evidence from the June, 1993 eruption of Oldoinyo Lengai, Tanzania. Journal of Geology 1996, 104:41-54.
13. Druitt T.H., Young S.R., Baptie B., Bonadonna C., Calder E., Clarke A.B., Cole P.D., Harford C.L., Herd R.A., Luckett R., Ryan G., Voight B. Episodes of cyclic Vulcanian activity with fountain collapse at Soufrière Hills Volcano, Montserrat. The Eruption of Soufrière Hills Volcano, Montserrat, from 1995 to 1999 2002, vol. 21:281-306. Geological Society London, Memoirs.
14. Escardino A., Garcia-Ten J., Feliu C. Kinetic study of calcite particle (powder) thermal decomposition: Part I. Journal of the European Ceramic Society 2008, 28:3011-3020.
15. Genge M.J., Balme M., Jones A.P. Salt-bearing fumarole deposits in the summit crater of Oldoinyo Lengai, northern Tanzania: interaction between natrocarbonatite lava and meteoric water. Journal of Volcanology and Geothermal Research 2001, 106:111-122.
16. Keller J., Krafft M. Effusive natrocarbonatite activity of Oldoinyo Lengai, June 1988. Bulletin of Volcanology 1990, 52:629-645.
17. Keller J., Zaitsev A.N., Wiedenmann D. Primary magmas at Oldoinyo Lengai: the role of olivine melilitites. Lithos 2006, 91:150-172.
18. Keller, J., Klaudius, J., Kervyn, M., Ernst, G.G.J., Mattsson, H.B., 2010. Fundamental changes in the activity of the natrocarbonatite volcano Oldoinyo Lengai, Tanzania: I. New magma composition during the 2007-2008 explosive eruptions. Bulletin of Volcanology, doi:. doi:10.1007/s00445-010-0371-x.
19. Kervyn M., Ernst G.G.J., Klaudius J., Keller J., Kervyn F., Mattsson H.B., Belton F., Mbede E., Jacobs P. Voluminous lava floods at Oldoinyo Lengai in 2006: chronology of events, vent construct instability and insights into the shallow magmatic system of a natrocarbonatite volcano. Bulletin of Volcanology 2008, 70:1069-1086.
20. Kervyn, M., Ernst, G.G.J., Vaughan, G.R., Keller, J., Klaudius, J., Pradal, E., Belton, F., Mattsson, H.B., Mbede, E., Jacobs, P., 2010. Fundamental changes in the activity of the natrocarbonatite volcano Oldoinyo Lengai, Tanzania: II. Eruptive behaviour during the 2007-2008 explosive eruptions. Bulletin of Volcanology, doi:. doi:10.1007/s00445-010-0360-0.
21. Kjarsgaard B.A., Hamilton D.L. The genesis of carbonatites by immiscibility. Carbonatites: Genesis and Evolution 1989, 388-404. Unwin Hyman, London. K. Bell (Ed.).
22. Klaudius J., Keller J. Peralkaline silicate lavas at Oldoinyo Lengai, Tanzania. Lithos 2006, 91:173-190.
23. L'vov B.V., Polzik L.K., Ugolkov V.L. Decomposition kinetics of calcite: a new approach to the old problem. Thermochimica Acta 2002, 390:5-19.
24. Mattsson H.B., Caricchi L. Experimental constraints on the crystallization of natrocarbonatitic lava flows. Bulletin of Volcanology 2009, 71:1179-1193.
25. McKie D., Frankis E.J. Nyerereite a new volcanic carbonate mineral from Oldoinyo Lengai, Tanzania. Zeitschrift für Kristallographie 1977, 145:73-95.
26. Mitchell R.H. Carbonate-carbonate immiscibility, neighborite and potassium iron sulfide in Oldoinyo Lengai natrocarbonatite. Mineralogical Magazine 1997, 61:779-789.
27. Mitchell R.H. Sylvite and fluorite microcrysts, and fluorite-nyerereite intergrowths from natrocarbonatite, Oldoinyo Lengai, Tanzania. Mineralogical Magazine 2006, 70:103-114.
28. Mitchell, R.H., 2009. Peralkaline nephelinite-natrocarbonatite immiscibility and carbonatite assimilation at Oldoinyo Lengai, Tanzania. Contributions to Mineralogy and Petrology. doi: 10.1007/s00410-009-0398-1.
29. Mitchell R.H., Belton F. Niocalite-cuspidine solid solution and manganoan monticellite from natrocarbonatite, Oldoinyo Lengai, Tanzania. Mineralogical Magazine 2004, 68:787-799.
30. Mitchell R.H., Dawson J.B. The 24th September 2007 ash eruption of the carbonatite volcano Oldoinyo Lengai, Tanzania: mineralogy of the ash and implications for formation of a new hybrid magma type. Mineralogical Magazine 2007, 71(5):483-492.
31. Morogan V., Martin R.F. Mineralogy and partial melting of fenitized crustal xenoliths in the Oldoinyo Lengai carbonatitic volcano, Tanzania. American Mineralogist 1985, 70:1114-1126.
32. Muhongo S. Anatomy of the Mozambique Belt of eastern and southern Africa: evidence from Tanzania. Gondwana Research 1999, 2:369-375.
33. Nandedkar, R.H., 2008. Petrology of the Lake Natron-Engaruka Monogenetic Field, Tanzania. Unpublished MSc-Thesis, ETH Zürich, pp. 130.
34. Peterson T.D. Petrology and genesis of natrocarbonatite. Contributions to Mineralogy and Petrology 1990, 105:143-155.
35. Petibon C.M., Kjarsgaard B.A., Jenner G.A., Jackson S.E. Phase relationships of a silicate-bearing natrocarbonatite from Oldoinyo Lengai at 20 and 100 MPa. Journal of Petrology 1998, 39:2137-2151.
36. Sparks R.S.J. The dynamics of bubble formation and growth in magmas-a review and analysis. Journal of Volcanology and Geothermal Research 1978, 3:1-37.
37. Sparks R.S.J., Bursik M.I., Carey S.N., Gilbert J.S., Glaze L.S., Sigurdsson H., Woods A.W. Volcanic Plumes 1997, Wohn Wiley & Sons.
38. Vergniolle, S., Cashman, K., 2000. Hawaiian and Strombolian eruptions. In: Sigurdsson, H., Houghton, B., McNutt, S., Rymer, H., Stix, J. (Eds.), Encyclopedia of Volcanoes. Academic Press, San Diego, pp. 447-461.
39. 7), a new mineral from the active carbonatite-nephelinite-phonolite volcano Oldoinyo Lengai, northern Tanzania. Mineralogical Magazine 2009, 73:373-384.
40. Zaitsev A.N., Keller J. Mineralogical and chemical transformation of Oldoinyo Lengai natrocarbonatites, Tanzania. Lithos 2006, 91:191-207.
41. Zaitsev A.N., Keller J., Spratt J., Jeffries T.E., Sharygin V.V. Chemical composition of nyerereite and gregoryite from natrocarbonatites of Oldoinyo Lengai volcano, Tanzania. Zapiski (Proceedings) of the Russian Mineralogical Society 2008, 137(4):101-111.
42. Zaitsev A.N., Keller J., Spratt J., Perova E.N., Kearsley A. Nyerereite-pirssonite-calcite-shortite relationships in altered natrocarbonatites, Oldoinyo Lengai, Tanzania. Canadian Mineralogist 2008, 46:843-860.