Plume dynamics beneath the African plate inferred from the geochemistry of the Tertiary basalts of southern Ethiopia

Contributions to Mineralogy and Petrology

Volumn 144, Issue 3, 2002, Pages 286-304

  George, R M ^a   Rogers, N W ^a  

^a UNIVERSITY OF BRISTOL   (United Kingdom)

^b OPEN UNIVERSITY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

AFRICAN PLATE; FLOOD BASALT; GEOCHEMISTRY; MAGMATIC DIFFERENTIATION; MAGMATISM; MANTLE PLUME; TERTIARY;

(SOUTH); ETHIOPIA;

EID: 0036930090     PISSN: 00107999     EISSN: None     Source Type: Journal    
DOI: 10.1007/s00410-002-0396-z     Document Type: Article

References (67)

1. Albarède F, Luais B, Fitton G, Semet M, Kaminski E, Upton BGJ, Bachelery P, Cheminee JL (1997) The geochemical regimes of Piton de la Fournaise volcano (Reunion) during the last 530,000 years. J Petrol 38:171-201
2. Altherr R, Henjes-Kunst F, Pulchet H, Baumann A (1988) Volcanic activity in the Red Sea axial trough - evidence for a large mantle diapir? Tectonophysics 150:121-133
3. Baker BH, Mohr PA, Williams LAJ (1972) Geology of the Eastern Rift System of Africa. Geol Soc Am Spec Pap 136:67
4. Baker J, Snee L, Menzies M (1996a) A brief Oligocene period of flood volcanism in Yemen; implications for the duration and rate of continental flood volcanism at the Afro-Arabian triple junction. Earth Planet Sci Lett 138:39-55
5. Baker JA, Thirlwall MF, Menzies MA (1996b) Sr-Nd-Pb isotopic and trace element evidence for crustal contamination of plume-derived flood basalts: Oligocene flood volcanism in western Yemen. Geochim Cosmochim Acta 60:2559-2581
6. Bedini RM, Bodinier JL, Dautria JM, Morten L (1997) Evolution of LILE-enriched small melt fractions in the lithospheric mantle: a case study from the East African Rift. Earth Planet Sci Lett 153:67-83
7. Bosworth W, Morley CK (1994) Structural and stratigraphic evolution of the Anza rift, Kenya. Tectonophysics 236:93-115
8. Collet B, Parrot JF, Taud H (2000) Orientation of absolute African plate motion revealed by tomomorphometric analysis of the Ethiopian dome. Geology 28:1147-1149
9. Courtillot V, Jaupart C, Manighetti I, Tapponnier P, Besse J (1999) On causal links between flood basalts and continental breakup. Earth Planet Sci Lett 166:177-195
10. Cox KG, Bell JD, Pankhurst RJ (1979) The interpretation of igneous rocks. Allen and Unwin, London
11. Davidson A (1983) The Omo River project: reconnaissance geology and geochemistry of parts of Illubabor, Kefa, Gemu and Sidamo, Ethiopia. Bull Ethiopian Inst Geol Surv. Ministry of Mines and Energy, vol 2
12. Deniel C, Vidal P, Coulon C, Vellutini PJ, Piguet P (1994) Temporal evolution of mantle sources during continental rifting: the volcanism of Djibouti (Afar). J Geophys Res 99:2853-2869
13. Duyverman HJ, Harris NBW, Hawkesworth CJ (1982) Crustal accretion in the Pan-African: Nd and Sr isotope evidence from the Arabian shield. Earth Planet Sci Lett 59:315-326
14. Ebinger CJ, Sleep NH (1998) Cenozoic magmatism throughout East Africa resulting from impact of a single plume. Nature 395:788-791
15. Ebinger C, Bechtel T, Forsyth D, Bowin C (1989) Effective elastic thickness beneath the East African and Afar plateaus and dynamic compensation of the uplifts. J Geophys Res 94:2883-2901
16. Ebinger CJ, Yemane T, WoldeGabriel G, Aronson JL, Walter RC (1993) Late Eocene-Recent volcanism and faulting in the southern main Ethiopian rift. J Geol Soc Lond 150:99-108
17. Eissen J-P, Juteau T, Joron J-L, Dupre B, Humler E, Al'Mkhamedov A (1989) Petrology and geochemistry of basalts from the Red sea axial rift at 18° north. J Petrol 30:791-839
18. George R, Rogers N (1999) The petrogenesis of Plio-Pleistocene alkaline volcanic rocks from the Tosa Sucha region. Arba Minch. southern Main Ethiopian Rift. Acta Vulcanol 11:121-131
19. George R, Rogers N, Kelley S (1998) Earliest magmatism in Ethiopia: evidence for two mantle plumes in one flood basalt province: Geology 26:923-926
20. Ghiorso MS, Sack RO (1995) Chemical mass transfer in magmatic processes; IV, a revised and internally consistent thermodynamic model for the interpolation and extrapolation of liquid-solid equilibria in magmatic systems at elevated temperatures and pressures. Contrib Mineral Petrol 119:197-212
21. Gordon RG, Jurdy DM (1986) Cenozoic global plate motions. J Geophys Res 91:12389-12406
22. Halliday AN, Lee D-C, Tommasini S, Davies GR, Paslick CR, Fitton JG, James DE (1995) Incompatible trace elements in OIB and MORB and source enrichment in the sub-oceanic mantle. Earth Planet Sci Lett 133:379-395
23. Hart SR (1984) A large scale isotopic anomaly in the Southern Hemisphere mantle. Nature 309:753-757
24. Hart WK, WoldeGabriel G, Walter RC, Mertzman SA (1989) Basaltic volcanism in Ethiopia: constraints on continental rifting and mantle interactions. J Geophys Res 94:731-748
25. Hendrie DB, Kuznir NJ, Morley CK, Ebinger CJ (1994) Cenozoic extension in northern Kenya: a quantitative model of rift basin development in the Turkana region. Tectonophysics 236:409-438
26. Herzberg C, Zhang J (1996) Melting experiments on anhydrous peridotite KLB-1: composition of magmas in the upper mantle and transition zone. J Geophys Res 101:8271-8295
27. Hirose K, Kushiro I (1993) Partial melting of dry peridotites at high pressures: determination of compositions of melts segregated from peridotite using aggregates of diamond. Earth Planet Sci Lett 114:477-489
28. Hofmann AW, Jochum KP (1996) Source characteristics derived from very incompatible trace elements in Mauna Loa and Mauna Kea basalts, Hawaii Scientific Drilling Project. J Geophys Res 101:11831-11839
29. Hofmann C, Courtillot V, Féraud G, Rochette P, Yirgu G, Ketefo E, Pik R (1997) Timing of the Ethiopian flood basalt event and implications for plume birth and global change. Nature 389:838-841
30. Jones PW (1976) Age of the lower flood basalts of the Ethiopian plateau. Nature 261:567-569
31. Klein EM, Langmuir CH (1987) Global correlations of ocean ridge basalt chemistry with axial depth and crustal thickness. J Geophys Res 92:8089-8115
32. Lassiter JC, DePaulo DJ (1997) Plume/lithosphere interaction in the generation of continental and oceanic flood basalts: chemical and isotopic constraints. In: Mahoney JJ. Coffin MF (eds) Large igneous provinces - continental, oceanic and planetary volcanics. American Geophysical Union, Washington, pp 335-357
33. Macdonald GA, Katsura T (1964) Chemical composition of Hawaiian lavas. J Petrol 5:82-133
34. Marty B, Pik R, Gezahegn Y (1996) Helium isotopic variations in Ethiopian plume lavas: nature of magmatic sources and limit on lower mantle contribution. Earth Planet Sci Lett 144:223-237
35. McGuire AV, Stern RJ (1993) Granulite xenoliths from Saudi Arabia: the lower crust of the late Precambrian Arabian-Nubian shield. Contrib Mineral Petrol 114:395-408
36. McKenzie DP, Bickle MJ (1988) The volume and composition of melt generated by extension of the lithosphere. J Petrol 29:625-679
37. McKenzie DP, O'Nions RK (1991) Partial melt distributions from inversion of Rare Earth element concentrations. J Petrol 32:1021-1091
38. Nelson DR, Chivas AR, Chappell BW, McCulloch MT (1988) Geochemical and isotopic systematics in carbonatites and implications for the evolution of ocean-island sources. Geochim Cosmochim Acta 52:1-17
39. O'Connor JM, Stoffers P, van den Bogaard P, McWilliams M (1999) First seamount age evidence for significantly slower African plate motion since 19 to 30 Ma. Earth Planet Sci Lett 171:575-589
40. Paslick C, Halliday A, James D, Dawson JB (1995) Enrichment of the continental lithosphere by OIB melts - isotopic evidence from the volcanic province of Tanzania. Earth Planet Sci Lett 130:109-126
41. Pik R, Deniel C, Coulon C, Yirgu G, Hofmann C, Ayelew D (1998) The northwestern Ethiopian Plateau flood basalts. Classification and spatial distribution of magma types. J Volcanol Geotherm Res 81:91-111
42. Pik R, Deniel C, Coulon C, Yirgu G, Marty B (1999) Isotopic and trace element signatures of Ethiopian flood basalts: evidence for plume-lithosphere interactions. Geochim Cosmochim Acta 63:2263-2279
43. Potts PJ (1999) X-ray fluorescence analysis. In: Marshall CP. Fairbridge RW (eds) Encyclopedia of geochemistry. Kluwer, Dordrecht
44. Potts PJ, Williams-Thorpe O, Issacs MC, Wright DW (1985) High precision instrumental neutron activation analysis of geological samples employing simultaneous counting with both planar and coaxial detectors. Chem Geol 48:145-155
45. Pyle DG, Christie DM, Mahoney JJ, Duncan RA (1995) Geochemistry and geochronology of ancient southeast Indian and southwest Pacific seafloor. J Geophys Res 100:22261-22282
46. Robinson JAC, Wood BJ (1998) The depth of the spinel to garnet transition at the peridotite solidus. Earth Planet Sci Lett 164:277-284
47. Rochette P, Tamrat E, Féraud G, Pik R, Courtillot V, Ketefo E, Coulon C, Hoffmann C, Vandamme D, Yirgu G (1998) Magnetostratigraphy and timing of the Oligocene Ethiopian Traps. Earth Planet Sci Lett 164:497-510
48. Roeder PL, Emslie RF (1970) Olivine-liquid equilibrium. Contrib Mineral Petrol 29:275-289
49. Rogers N, Macdonald R, Fitton JG, George R, Smith M, Barreiro B (2000) Two mantle plumes beneath the East African Rift system: Sr, Nd and Pb isotope evidence from Kenya Rift basalts. Earth Planet Sci Lett 176:387-400
50. Rudnick RL, McDonough WF, Chappell BW (1993) Carbonatite metasomatism in the northern Tanzanian mantle: petrographic and geochemical characteristics. Earth Planet Sci Lett 114:463-475
51. Schilling J-G, Kingsley RH, Hanan BB, McCully BL (1992) Nd-Sr-Pb isotopic variations along the Gulf of Aden: evidence for the Afar mantle plume-lithosphere interaction. J Geophys Res 97:10927-10966
52. Silver PG, Russo RM, Lithgow-Bertelloni C (1998) Coupling of South American and African plate motion and plate deformation. Science 279:60-63
53. Stewart K, Rogers N (1996) Mantle plume and lithosphere contributions to basalts from southern Ethiopia. Earth Planet Sci Lett 139:195-211
54. Sun S-S, McDonough WF (1989) Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Geol Soc Lond Spec Publ 42:313-345
55. Taylor SR, McLennan SM (1985) The continental crust: its composition and evolution. Blackwell Scientific Publications, London
56. Teklay M, Kröner A, Mezger K, Oberhänsli R (1996) Geochemistry, Pb-Pb single zircon ages and Nd-Sr isotope ratios of Precambrian rocks from southern and eastern Ethiopia: implications for crustal evolution in east Africa. J Conf Abstr 1:617
57. Thirlwall MF, Upton BGJ, Jenkins C (1994) Interaction between continental lithosphere and the Iceland plume - Sr-Nd-Pb isotope geochemistry of Tertiary basalts, NE Greenland. J Petrol 35:839-879
58. 205Pb double spike for high-precision lead isotopic analyses, In: Basu A, Hart S (eds) Earth processes, reading the isotopic code. Geophys Monogr Am Geophys Union 95:429-437
59. Turner S, Hawkesworth C (1995) The nature of the sub-continental mantle: constraints from the major-element composition of continental flood basalts. Chem Geol 120:295-314
60. Turner S, Hawkesworth C, Gallagher K, Stewart K, Peate D, 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 Paraná. J Geophys Res 101:11503-11518
61. Turner S, Platt JP, George RM, Kelley SP, Pearson DG, Nowell GM (1999) Magmatism associated with orogenic collapse of the Betic-Alboran Domain, SE Spain. J Petrol 40:1011-1036
62. Watson S, McKenzie D (1991) Melt generation by plumes: a study of Hawaiian volcanism. J Petrol 32:501-537
63. Weaver BL (1991) Trace element evidence for the origin of ocean-island basalts. Geology 19:123-126
64. Westcott WA, Stone DM, Wigger ST (1995) Geological and geophysical reconnaissance of the Lotikipi plain of northwestern Kenya and its relationship to the northern Kenya Rift. J Afr Earth Sci 21:241-251
65. Wilson M, Guiraud R (1992) Magmatism and rifting in Western and Central Africa, from Late Jurassic to Recent times. Tectonophysics 213:203-225
66. Wood B, Blundy J (1997) A predictive model for rare earth element partitioning between clinopyroxene and anhydrous silicate melt. Contrib Mineral Petrol 129:166-181
67. Zindler A, Hart SR (1986) Chemical geodynamics. Annu Rev Earth Planet Sci 14:493-571