Petrology and geochemistry of alkaline lava series, Kilimanjaro Tanzania: New constraints on petrogenetic processes

Special Paper of the Geological Society of America

Volumn 478, Issue , 2011, Pages 127-158

  Nonnotte, Philippe ^a   Benoit, Mathieu ^a,b   Le Gall, Bernard ^a   Hémond, Christophe ^a   Rolet, Joël ^a   Cotten, Joseph ^a   Brunet, Pierre ^b   Makoba, Edikafumeni ^c  

^a INSTITUT UNIVERSITAIRE EUROPÉEN DE LA MER   (France)

^b Environmental Research Observatory (ORE) HYBAM Centre IRD d'Ile de France   (France)

^c UNIVERSITY OF DAR ES SALAAM   (Tanzania)

Author keywords

[No Author keywords available]

Indexed keywords

GASOLINE; GEOCHEMISTRY; ISOTOPES; LITHOLOGY; MELTING; PETROLOGY; STRUCTURAL GEOLOGY; VOLCANOES;

CONTINENTAL LITHOSPHERE; FRACTIONAL CRYSTALLIZATION; GEOCHEMICAL FEATURES; ISOTOPIC INVESTIGATION; LITHOSPHERIC MANTLE; MAJOR AND TRACE ELEMENTS; PETROGENETIC PROCESS; THERMAL HEATING;

TRACE ELEMENTS;

AMPHIBOLE; BASANITE; FRACTIONAL CRYSTALLIZATION; IGNEOUS GEOCHEMISTRY; ISOTOPIC ANALYSIS; PARTIAL MELTING; PETROGENESIS; PETROLOGY; PHONOLITE; SPATIAL DISTRIBUTION; TRACE ELEMENT; UPWELLING;

KILIMANJARO [KILIMANJARO (RGA)]; KILIMANJARO [TANZANIA]; TANZANIA;

EID: 80051909809     PISSN: 00721077     EISSN: None     Source Type: Book Series    
DOI: 10.1130/2011.2478(07)     Document Type: Article

References (77)

1. Ablay, G.J., Carrol, M.R., Palmer, M.R., Marti, J., and Sparks, R.S., 1998, Basanite-phonolite lineage of the Teide-Pico Viejo volcanic complex, Tenerife, Canary Islands: Journal of Petrology, v. 39, p. 905-936, doi:10.1093/petrology/39.5.905. (Pubitemid 28415901)
2. Albarède, F., Luais, B., Fitton, J.G., Semei, M.P., Kaminski, E., Upton, B.G.J., Bachelery, P., and Cheminée, J.L., 1997, The geochemical regimes of Piton de la Fournaise volcano (Réunion) during the last 530, 000 years: Journal of Petrology, v. 38, p. 171-201, doi:10.1093/petrology/38.2. 171.
3. Arndt, N.T., and Christensen, U., 1992, The role of lithospheric mantle in continental flood volcanism: Thermal and geochemical constraints: Journal of Geophysical Research, v. 97, no. B7, p. 10, 967-10, 981, doi:10.1029/92JB00564.
4. Bagdasaryan, G.P., Gerasimovskiy, V.I., Polyakov, A.I., and Gukasyan, R.K., 1973, Age of volcanic rocks in the rift zones of East Africa: Geochemistry International, v. 10, p. 66-71.
5. Baker, B.H., 1967, Geology of the Mount Kenya Area: Geological Survey of Kenya Report 79, 78 p.
6. Baker, B.H., Williams, L.A.J., Miller, J.A., and Fitch, F.J., 1971, Sequence and geochronology of the Kenya Rift volcanics: Tectonophysics, v. 11, p. 191-215, doi:10.1016/0040-1951(71)90030-8.
7. Barrat, J.-A., Keller, F., Amossé, J., Taylor, R.N., Nesbitt, R.W., and Hirata, T., 1996, Determination of rare earth elements in sixteen silicate reference samples by ICP-MS after Tm addition and ion exchange separation: Geostandards Newsletter, v. 20, p. 133-139, doi:10.1111/j.1751-908X. 1996.tb00177.x. (Pubitemid 126820745)
8. Barrat, J.-A., Fourcade, S., Jahn, B.M., Cheminée, J.L., and Capdevila, R., 1998, Isotope (Sr, Nd, Pb, O) and trace element geochemistry of volcanics from the Erta' Ale range (Ethiopia): Journal of Volcanology and Geothermal Research, v. 80, p. 85-100, doi:10.1016/S0377-0273(97)00016-4.
9. Bell, K., and Blenkinshop, J., 1987, Nd and Sr isotopic compositions of East African carbonatites: Implications for mantle heterogeneity: Geology, v. 15, p. 99-102, doi:10.1130/0091-7613(1987)152.0.CO;2.
10. Bell, K., and Tilton, G.R., 2001, Nd, Pb and Sr isotopic compositions of East African carbonatites: Evidence for mantle mixing and plume inhomogeneity: Journal of Petrology, v. 42, no. 10, p. 1927-1945, doi:10.1093/petrology/42.10. 1927.
11. Birt, C.S., Maguire, P.K., Khan, M.A., Thybo, H., Keller, G.R., and Patel, J., 1997, The influence of pre-existing structures on the evolution of the southern Kenya Rift Valley-Evidence from seismic and gravity studies: Tectonophysics, v. 278, p. 211-242, doi:10.1016/S0040-1951(97)00105-4.
12. Burton, K.W., Schiano, P., Birck, J.L., Allègre, C.J., Rehk̈mper, M., Halliday, A.N., and Dawson, J.B., 2000, The distribution and behaviour of rhenium and osmium amongst mantle minerals and the age of the lithospheric mantle beneath Tanzania: Earth and Planetary Science Letters, v. 183, p. 93-106, doi:10.1016/S0012-821X(00)00259-4. (Pubitemid 32010667)
13. Caroff, M., Maury, R.C., Leterrier, J., Joron, J.L., Cotton, J., and Guille, G., 1993, Trace element behaviour in the alkali basalt-comenditic trachyte series from Mururoa Atoll, French Polynesia: Lithos, v. 30, p. 1-22, doi:10.1016/0024-4937(93)90002-T. (Pubitemid 23391789)
14. Clague, D.A., and Frey, F.A., 1982, Petrology and trace element geochemistry of the Honolulu volcanics, Oahu: Implications for the oceanic mantle below Hawaii: Journal of Petrology, v. 23, p. 447-504.
15. Class, C., and Goldstein, S.L., 1997, Plume-lithosphere interactions in the ocean basins: Constraints from the source mineralogy: Earth and Planetary Science Letters, v. 150, p. 245-260, doi:10.1016/S0012-821X(97)00089-7.
16. Class, C., Goldstein, S.L., Altherr, R., and Bachélery, P., 1998, The process of plume-lithosphere interactions in the ocean basins-The case of Grande Comore: Journal of Petrology, v. 39, p. 881-903, doi:10.1093/petrology/ 39.5.881. (Pubitemid 28415900)
17. Clément, J.P., Caroff, M., Hémond, C., Tiercelin, J.J., Bollinger, C., Guillou, H., and Cotten, J., 2003, Pleistocene magmatism in a lithospheric transition area: Petrogenesis of alkaline and peralkaline lavas from the Baringo-Bogoria Basin, central Kenya Rift: Canadian Journal of Earth Sciences, v. 40, p. 1239-1257, doi:10.1139/e03-046. (Pubitemid 37418372)
18. Cohen, R.S., O'Nions, R.K., and Dawson, J.B., 1984, Isotope geochemistry of xenoliths from East Africa: Implications for development of mantle reservoirs and their interaction: Earth and Planetary Science Letters, v. 68, p. 209-220, doi:10.1016/0012-821X(84)90153-5.
19. Cotten, J., Le Dez, A., Bau, M., Caroff, M., Maury, R.C., Dulski, P., Fourcade, S., Bohn, M., and Brousse, R., 1995, Origin of anomalous rareearth element and yttrium enrichments in subaerially exposed basalts: Evidence from French Polynesia: Chemical Geology, v. 119, p. 115-138, doi:10.1016/0009- 2541(94)00102-E.
20. Dawson, J.B., 1992, Neogene tectonics and volcanicity in the North Tanzania sector of the Gregory Rift Valley: Contrasts with the Kenya sector: Tectonophysics, v. 204, p. 81-92, doi:10.1016/0040-1951(92)90271-7.
21. De Mulder, M., Hertojen, J., Deutsch, S., and André, L., 1986, The role of crustal contamination in the potassic suite of Karisimbi volcano (Virunga), African Rift Valley: Chemical Geology, v. 57, p. 117-136, doi:10.1016/0009-2541(86)90097-5.
22. Downie, C., and Wilkinson, P., 1972, The Geology of Kilimanjaro: Sheffield, UK, Department of Geology, The University of Sheffield, 253 p.
23. Downie, C., Humphries, D.W., Wilcockson, W.H., and Wilkinson, P., 1956, Geology of Kilimanjaro: Nature, v. 178, p. 828-830, doi:10.1038/178828a0.
24. Downie, C., Humphries, D.W., Moore, L.R., Neves, R., Wilcockson, W.H., Wilkinson, P., Guest, N.J., Leedal, G.P., Sampson, D.N., Hartley, E.W., Orridge, G.R., Empson, H.E., and Pallister, J.W., 1965, Quarter Degree Sheets 42, 56 and 57, Kilimanjaro-Moshi and Explanatory Notes: Dodoma, Tanzanian Geological Survey, scale 1:125, 000.
25. Ebinger, C., and Sleep, N.H., 1998, Cenozoic magmatism throughout East Africa resulting from impact of a single plume: Nature, v. 395, p. 788-791, doi:10.1038/27417. (Pubitemid 28485443)
26. Ebinger, C.J., Poudjom Djomani, Y., Mbede, E., Foster, A.N., and Dawson, J.B., 1997, Rifting Archean lithosphere: Eyasi-Manyara-Natron Rifts, East Africa: Journal of the Geological Society of London, v. 154, p. 947-960, doi:10.1144/gsjgs.154.6.0947. (Pubitemid 127576175)
27. Fisk, M.R., Upton, B.G.J., Ford, C.E., and White, W.M., 1988, Geochemical and experimental study of the genesis of magmas of Reunion island, Indian Ocean: Journal of Geophysical Research, v. 93B, p. 4933-4950, doi:10.1029/JB093iB05p04933.
28. Francis, D., and Ludden, J., 1990, The mantle source for olivine nephelinite, basanite and alkaline olivine basalt at Fort Selkirk, Yukon, Canada: Journal of Petrology, v. 31, p. 371-400.
29. Francis, D., and Ludden, J., 1995, The signature of amphibole in mafic alkaline lavas, a study in the northern Canadian Cordillera: Journal of Petrology, v. 36, p. 1171-1191. (Pubitemid 26459005)
30. Fretzdorff, S., and Haase, K.M., 2002, Geochemistry and petrology of lavas from the submarine fl anks of Reunion island (Western Indian Ocean): Implications for magma genesis and the mantle source: Mineralogy and Petrology, v. 75, p. 153-184, doi:10.1007/s007100200022.
31. Furman, T., 2007, Geochemistry of East African Rift basalts: An overview: Journal of African Earth Sciences, v. 48, p. 147-160, doi:10.1016/j.jafrearsci. 2006.06.009. (Pubitemid 46832181)
32. Furman, T., and Graham, D., 1999, Erosion of lithospheric mantle beneath East African Rift system: Geochemical evidence from the Kivu volcanic province: Lithos, v. 48, p. 237-262, doi:10.1016/S0024-4937(99)00031-6. (Pubitemid 30034054)
33. Furman, T., Bryce, J.G., Karson, J., and Iotti, A., 2004, East African Rift system (EARS) plume structure: Insights from Quaternary mafic lavas of Turkana, Kenya: Journal of Petrology, v. 45, p. 1069-1088, doi:10.1093/ petrology/egh004. (Pubitemid 38549561)
34. Gallagher, K., and Hawkesworth, C., 1992, Dehydration melting and the generation of continental flood basalts: Nature, v. 358, p. 57-59, doi:10.1038/358057a0.
35. Goldich, S.S., Treves, S.B., Suhr, N.H., and Stuckless, J.S., 1975, Geochemistry of the Cenozoic volcanic rocks of Ross island and vicinity, Antarctica: The Journal of Geology, v. 83, p. 415-435, doi:10.1086/628120.
36. Goles, G.G., 1976, Some constraints on the origin of phonolites from the Gregory Rift, Kenya, and interferences concerning basaltic magmas in the rift system: Lithos, v. 9, p. 1-8, doi:10.1016/0024-4937(76)90051-7.
37. Hamelin, B., Dupré, B., and Allègre, C.J., 1986, Pb-Sr-Nd isotopic data in Indian Ocean ridges: New evidence of large-scale mapping of mantle heterogeneities: Earth and Planetary Science Letters, v. 76, p. 288-298, doi:10.1016/0012-821X(86)90080-4.
38. Hay, D.E., and Wendlandt, R.F., 1995, Origin of Kenya Rift plateau-type flood phonolites: Integrated petrologic and geophysical constraints on the evolution of the crust and upper mantle beneath the Kenya Rift: Journal of Geophysical Research, v. 100, no. B7, p. 10, 549-10, 557, doi:10.1029/94JB03036.
39. Hay, D.E., Wendlandt, R.F., and Wendlandt, E.D., 1995, The origin of Kenya Rift plateau-type phonolites: Evidence from geochemical studies for fusion of lower crust modifi ed by alkali basaltic magmatism: Journal of Geophysical Research, v. 100, no. B1, p. 411-422, doi:10.1029/94JB02159.
40. Kaszuba, J.P., and Wendlandt, R.F., 2000, Effect of carbon dioxide on dehydration melting reactions and melt compositions in the lower crust and the origin of alkaline rocks: Journal of Petrology, v. 41, p. 363-386, doi:10.1093/petrology/41.3.363. (Pubitemid 30166546)
41. Kyle, P.R., Moore, J.A., and Thirlwall, M.F., 1992, Petrologic evolution of anorthoclase phonolite lavas at Mount Erebus, Ross Island, Antarctica: Journal of Petrology, v. 33, p. 849-875.
42. Last, R.J., Nyblade, A.A., and Langston, C.A., 1997, Crustal structure of the East African plateau from receiver functions and Rayleigh wave phase velocities: Journal of Geophysical Research, v. 102, no. B11, p. 24, 469-24, 483, doi:10.1029/97JB02156.
43. Lee, C.-T., Rudnick, R.L., McDonough, W.F., and Horn, I., 2000, Petrologic and geochemical investigation of carbonates in peridotite xenoliths from northeastern Tanzania: Contributions to Mineralogy and Petrology, v. 139, p. 470-484, doi:10.1007/s004100000144. (Pubitemid 30667135)
44. Le Gall, B., Nonnotte, P., Rolet, J., Benoit, M., Guillou, H., Mousseau-Nonnotte, M., Albaric, J., and Deverchère, J., 2008, Rift propagation at craton margin. Distribution of faulting and volcanism in the North Tanzanian divergence (East Africa) during Neogene times: Tectonophysics, v. 448, p. 1-19, doi:10.1016/j.tecto.2007.11.005.
45. Legendre, C., Maury, R.C., Caroff, M., Guillou, H., Cotten, J., Chauvel, C., Bollinger, C., Hémond, C., Guille, G., Blais, S., Rossi, P., and Savanier, D., 2005, Origin of exceptionally abundant phonolites on Ua Pou island (Marquesas, French Polynesia): Partial melting of basanites followed by crustal contamination: Journal of Petrology, v. 46, no. 9, p. 1925-1962, doi:10.1093/petrology/egi043. (Pubitemid 41222641)
46. Le Maitre, R.W., Bateman, P., Duddek, A., Keller, J., Le Bas, M.J., Sabine, P.A., Schmid, R., Sorensen, H., Streckeisen, A., Woolley, A.R., and Zanettin, B., 1989, A Classifi cation of Igneous Rocks and Glossary of Terms: Oxford, UK, Blackwell, 193 p.
47. Le Roex, A.P., Cliff, R.A., and Adair, B.J.I., 1990, Tristan da Cunha, South Atlantic: Geochemistry and petrogenesis of a basanite-phonolite lava series: Journal of Petrology, v. 31, p. 779-812.
48. Le Roex, A.P., Sp̈th, A., and Zartman, R.E., 2001, Lithospheric thickness beneath the southern Kenya Rift: Implications from basalt geochemistry: Contributions to Mineralogy and Petrology, v. 142, p. 89-106, doi:10.1007/s004100100273. (Pubitemid 33030797)
49. Lippard, S.J., 1973, The petrology of phonolites from the Kenya Rift: Lithos, v. 6, p. 217-234, doi:10.1016/0024-4937(73)90083-2.
50. Luais, B., 2004, Temporal changes in Nd isotopic composition of Piton de la Fournaise magmatism (Réunion Island, Indian Ocean): Geochemistry Geophysics Geosystems, v. 5, doi:10.1029/2002GC000502.
51. MacDonald, R., Rogers, N.W., Fitton, J.G., Black, S., and Smith, M., 2001, Plume-lithosphere interactions in generation of the basalts of the Kenya Rift, East Africa: Journal of Petrology, v. 42, no. 5, p. 877-900, doi:10.1093/petrology/42.5.877. (Pubitemid 32425016)
52. Mahoney, J.J., Natland, J.H., White, W.M., Poreda, R.J., Bloomer, S.M., Fisher, R.L., and Baxter, A.N., 1989, Isotopic and chemical provinces of the Western Indian Ocean spreading centers: Journal of Geophysical Research, v. 94, p. 4033-4052, doi:10.1029/JB094iB04p04033.
53. McKenzie, D., 1989, Some remarks on the movement of small melt fractions in the mantle: Earth and Planetary Science Letters, v. 95, p. 53-72, doi:10.1016/0012-821X(89)90167-2.
54. McKenzie, D., and Bickle, J., 1988, The volume and composition of melt generated by extension of the lithosphere: Journal of Petrology, v. 29, no. 3, p. 625-679.
55. Middlemost, E.A.K., 1989, Iron oxidation ratios, norm and the classifi cation of volcanic rocks: Chemical Geology, v. 77, p. 19-26, doi:10.1016/0009-2541(89)90011-9.
56. Newsom, H.E., White, W.M., Jochum, K.P., and Hofmann, A.W., 1986, Siderophile and chalcophile element abundances in oceanic basalts, Pb isotope evolution and growth of the Earth's core: Earth and Planetary Science Letters, v. 80, p. 299-313, doi:10.1016/0012-821X(86)90112-3.
57. Nonnotte, P., Guillou, H., Le Gall, B., Benoit, M., Cotten, J., and Scaillet, S., 2008, New K-Ar age determinations of Kilimanjaro volcano in the North Tanzanian diverging rift, East Africa: Journal of Volcanology and Geothermal Research, v. 173, p. 99-112, doi:10.1016/j.jvolgeores.2007.12.042.
58. Nyblade, A.A., and Robinson, S.W., 1994, The African superswell: Geophysical Research Letters, v. 21, p. 765-768, doi:10.1029/94GL00631.
59. O'Hara, M.J., 1977, Geochemical evolution during fractional crystallization of a periodically refi lled magma chamber: Nature, v. 266, p. 503-507, doi:10.1038/266503a0.
60. Paslick, C.R., Halliday, A.N., James, D., and Dawson, J.B., 1995, Enrichment of the continental lithosphere by OIB melts: Isotopic evidence from the volcanic province of northern Tanzania: Earth and Planetary Science Letters, v. 130, p. 109-126, doi:10.1016/0012-821X(95)00002-T.
61. Paslick, C.R., Halliday, A.N., Lange, R.B., James, D., and Dawson, J.B., 1996, Indirect crustal contamination: Evidence from isotopic and chemical disequilibria in minerals from alkali basalts and nephelinites from northern Tanzania: Contributions to Mineralogy and Petrology, v. 125, p. 277-292, doi:10.1007/s004100050222.
62. Paul, D., White, W.M., and Blichert-Toft, J., 2005, Geochemistry of Mauritius and the origin of rejuvenescent volcanism on ocean island volcanoes: Geochemistry Geophysics Geosystems, v. 6, doi:10.1029/2004GC000883.
63. Peng, Z.X., and Mahoney, J.J., 1995, Drillhole lavas from the northwestern Deccan Traps and the evolution of Reunion hotspot mantle: Earth and Planetary Science Letters, v. 134, p. 169-185, doi:10.1016/0012-821X(95)00110- X. (Pubitemid 26455330)
64. Pik, R., Deniel, C., Coulon, C., Yirgu, G., and Marty, B., 1999, Isotopic and trace element signatures of Ethiopian flood basalts: Evidence for plumelithosphere interactions: Geochimica et Cosmochimica Acta, v. 63, no. 15, p. 2263-2279, doi:10.1016/S0016-7037(99)00141-6. (Pubitemid 30014920)
65. Price, R.C., Johnson, R.W., Gray, C.M., and Frey, F.A., 1985, Geochemistry of phonolites and trachytes from the summit region of Mt. Kenya: Contributions to Mineralogy and Petrology, v. 89, p. 394-409, doi:10.1007/ BF00381560.
66. Rogers, N., De Mulder, M., and Hawkesworth, C., 1992, An enriched mantle source for potassic basanites: Evidence from Karisimbi volcano, Virunga volcanic province, Rwanda: Contributions to Mineralogy and Petrology, v. 111, p. 543-556, doi:10.1007/BF00320908.
67. Rogers, N., MacDonald, R., Fitton, J.G., George, R., Smith, M., and Barreiro, B., 2000, Two mantle plume beneath East African Rift system: Sr, Nd and Pb isotope evidence from Kenya Rift basalts: Earth and Planetary Science Letters, v. 176, p. 387-400, doi:10.1016/S0012-821X(00)00012-1. (Pubitemid 30234131)
68. Rollinson, H.R., 1993, Using Geochemical Data: Evaluation, Presentation, Interpretation: Essex, UK, Pearson Education, 352 p.
69. Rudnick, R.L., and Fountain, D.M., 1995, Nature and composition of continental crust: A lower crustal perspective: Reviews of Geophysics, v. 33, p. 267-309, doi:10.1029/95RG01302. (Pubitemid 26456752)
70. Sp̈th, A., Le Roex, A.P., and Duncan, R.A., 1996, The geochemistry of lavas from the Comores Archipelago, Western Indian Ocean: Petrogenesis and mantle source region characteristics: Journal of Petrology, v. 37, no. 4, p. 961-991, doi:10.1093/petrology/37.4.961.
71. Sp̈th, A., Le Roex, A.P., and Opiyo-Akech, N., 2000, The petrology of Chyulu Hills volcanic Province, Southern Kenya: Journal of African Earth Science, v. 31, no. 2, p. 337-358. (Pubitemid 32062794)
72. Sp̈th, A., Le Roex, A.P., and Opiyo-Akech, N., 2001, Plume-lithosphere interaction and the origin of continental rift-related alkaline volcanism-The Chyulu Hills volcanic province, southern Kenya: Journal of Petrology, v. 42, no. 4, p. 765-787, doi:10.1093/petrology/42.4.765. (Pubitemid 32386353)
73. Sun, S.S., and McDonough, W.F., 1989, Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes, in Saunders, A.D., and Norry, M.J., eds., Magmatism in the Ocean Basins: Geological Society of London Special Publication 42, p. 313-345.
74. Turner, S., Hawkesworth, C., Gallagher, K., Stewart, K., Peate, D., and Mantovani, M., 1996, Mantle plumes, flood basalts, and thermal models for melt generation beneath continents: Assessment of a conductive heating model and application to the Paranà: Journal of Geophysical Research, v. 101, no. B5, p. 11, 503-11, 518, doi:10.1029/96JB00430.
75. Weaver, B.L., 1990, Geochemistry of highly-undersaturated ocean island basalt suites from the South Atlantic Ocean: Fernando de Noronha and Trindade Islands: Contributions to Mineralogy and Petrology, v. 105, p. 502-515, doi:10.1007/BF00302491.
76. Wilkinson, P., Mitchell, J.G., Cattermole, P.J., and Downie, C., 1986, Volcanic chronology of the Meru-Kilimanjaro region, northern Tanzania: Journal of the Geological Society of London, v. 143, p. 601-605, doi:10.1144/gsjgs.143. 4.0601.
77. Zindler, A., and Hart, S., 1986, Chemical geodynamics: Annual Review of Earth and Planetary Sciences, v. 14, p. 493-571, doi:10.1146/annurev .ea.14.050186.002425.