Petrogenesis of A-type granitoids from the Wallagga area, western Ethiopia: Constraints from mineralogy, bulk-rock chemistry, Nd and Sr isotopic compositions

Precambrian Research

Volumn 121, Issue 1-2, 2003, Pages 1-24

  Kebede, Tesfaye ^a   Koeberl, Christian ^a  

^a UNIVERSITY OF VIENNA   (Austria)

Author keywords

A type granite; Arabian Nubian shield; Ethiopia; Monzodiorite; Nd model age; Nd Sr isotopes

Indexed keywords

ALUMINUM; CALCIUM OXIDE; IRON OXIDE; MAGNESIUM OXIDE; NEODYMIUM; SILICON DIOXIDE; STRONTIUM;

A-TYPE ROCK; DECOMPRESSION; GRANITOID; IGNEOUS GEOCHEMISTRY; OROGENY; PETROGENESIS; PRECAMBRIAN;

CHEMICAL COMPOSITION; CRYSTALLIZATION; ETHIOPIA; GEOCHEMICAL ANALYSIS; GEOCHEMISTRY; GRANITE; ISOTOPE ANALYSIS; MINERALOGY; REVIEW;

ETHIOPIA; WALLAGGA;

EID: 0037470552     PISSN: 03019268     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0301-9268(02)00198-5     Document Type: Article

References (88)

1. Abate, B., Koeberl, C., Kruger, F.J., Underwood, J.R., Jr., 1999. BP and oasis impact structures, Libya, and their relation to Libyan Desert Glass. In: Dressler, B.O., Sharpton, V.L. (Eds.), Large meteorite impacts and planetary evolution II: Boulder, Colorado. Geol. Soc. Am. Spec. Paper 339, 177-192.
2. Abdel-Rahman, A.M., 1995. Tectonic-magmatic stages of shield evolution: the Pan-African belt in northeastern Egypt. Tectonophysics 242, 223-240.
3. Abdelsalam, M.G., Stern, R.J., 1996. Sutures and shear zones in the Arabian-Nubian Shield. J. Afr. Earth Sci. 23, 289-310.
4. Abraham, A., 1989. Tectonic history of the Pan-African low grade belt of western Ethiopia. Note No. 305, Eth. Inst. Geol. Surv., p. 15.
5. Alemu, A.T., 1998. Geochemistry of Neoproterozoic granitoids from the Axum area, northern Ethiopia. J. Afr. Earth Sci. 27, 437-460.
6. Almond, D.C., Osman, A.A., Ahmed, F., 1997. The Arba'at granite, Sudan: a mineralized Pan-African intrusion enhanced by hydrothermal metasomatism. J. Afr. Earth Sci. 24, 335-350.
7. Anderson, J.L., 1983. Proterozoic anorogenic granite plutonism of North America. Mem. Geol. Soc. Am. 161, 133-152.
8. Anderson, J.L., Smith, D.R., 1995. The effect of temperature and oxygen fugacity on Al-in-hornblende barometry. Am. Mineral. 80, 549-559.
9. Anderson, U.B., 1991. Granitoid episodes and mafic-felsic magma interaction in the Svecofennian of the Fennoscandian Shield, with main emphasis on the ∼1.8 Ga plutonics. In: Haapala, I., Condie, K.C. (Eds.), Precambrian granitoids - petrogenesis, geochemistry and metallogeny. Precam. Res. 51, 127-149.
10. Arndt, N.T., Goldstein, S.L., 1987. Use and abuse of crust-formation ages. Geology 15, 893-895.
11. Ayalew, T., Bell, K., Moore, J.M., Parish, R.R., 1990. U-Pb and Rb-Sr geochronology of the Western Ethiopian shield. Geol. Soc. Am. Bull. 102, 1309-1316.
12. Ayalew, T., Peccerillo, A., 1998. Petrology and geochemistry of the Gore-Gambella plutonic rocks, implications for magma genesis and the tectonic setting of the Pan-African Orogenic Belt of western Ethiopia. J. Afr. Earth Sci. 27, 397-416.
13. Barbarin, B., 1999. A review of the relationships between granitoid types, their origins and their geodynamic environments. Lithos 46, 605-626.
14. Bea, F., 1996. Residence of REE, Y, Th and U in granites and crustal protoliths implications for the chemistry of crustal melts. J. Petrol. 37, 521-552.
15. Berhe, S.M., 1990. Ophiolites in northeast and east Africa: implications for Proterozoic crustal growth. J. Geol. Soc. London 147, 41-57.
16. Beyth, M., Stern, R.J., Altherr, R., Kr̈ner, A., 1994. The late Precambrian Timna igneous complex, Southern Israel, evidence for comagmatic-type sanukitoid monzodiorite and alkali granite magma. Lithos 31, 103-124.
17. Bonin, B., 1991. The enclaves of the alkaline anorogenic granites: an overview. In: Didier, J., Barbarin, B. (Eds.), Enclaves and granite petrology. Elsevier, Amsterdam, pp. 179-189.
18. Chappell, B.W., 1996. Magma mixing and the production of compositional variation within granite suites, evidence from the granites of Southeastern Australia. J. Petrol. 37, 449-470.
19. Clemens, J.D., Holloway, J.R., White, A.J.R., 1986. Origin of A-type granites, experimental constraints. Am. Mineral. 71, 317-324.
20. Collins, W.J., Beams, S.D., White, A.J.R., Chappell, B.W., 1982. Nature and origin of A-type granites with particular reference to southeastern Australia. Contrib. Mineral. Petrol. 80, 189-200.
21. Creaser, R.A., Price, R.C., Wormald, R.J., 1991. A-type granites revisited, assessment of a residual-source model. Geology 19, 163-166.
22. Cullers, R.L., Graf, J.L., 1984. Rare earth elements in igneous rocks of the continental crust, intermediate and silicic rock-ore petrogenesis. In: Henderson, P. (Ed.), Rare earth element geochemistry. Elsevier, Amsterdam, pp. 275-316.
23. Davidson, A., 1983. The Omo River Project, reconnaissance geology and geochemistry of parts of Ilubabor, Kefa, Gemu Gofa and Sidamo, Ethiopia. Eth. Inst. Geol. Surv. Bull. 2, 89.
24. Depaolo, D.J., 1981. Neodymium isotopes in the Colorado Front Range and crust-mantle evolution in the Proterozoic. Nature 291, 193-196.
25. Drury, S.A., de Souza Filho, C.R., 1998. Neoproterozoic terrane assemblages in Eritrea: review and prospect. J. Afr. Earth Sci. 27, 331-348.
26. Eby, G.N., 1990. The A-type granitoids: a review of their occurrence and chemical characteristics and speculations on their petrogenesis. Lithos 26, 115-134.
27. Eby, G.N., 1992. Chemical subdivision of the A-type granitoids: petrogenetic and tectonic implications. Geology 20, 641-644.
28. Faure, G., 1986. Principles of isotope geology, 2nd edition. Wiley, New York, 589 p.
29. Faure, G., 1998. Principles and applications of geochemistry. Prentice-Hall, New Jersey, 600 p.
30. Förster, H.J., Tischendorf, G., Trumbull, R.B., 1997. An evaluation of the Rb vs. (Y+Nb) discrimination diagram to infer tectonic setting of silicic igneous rocks. Lithos 40, 261-293.
31. Gichile, S., Fyson, W.K., 1993. An inference of the tectonic setting of the Adola Belt of Southern Ethiopia from the geochemistry of magmatic rocks. J. Afr. Earth Sci. 16, 235-246.
32. Gromet, L.P., Silver, L.T., 1983. Rare earth element distributions among minerals in a granodiorite and their petrogenetic implications. Geochim. Cosmochim. Acta 47, 925-940.
33. Hammarstrom, J.M., Zen, E-an., 1986. Aluminum in hornblende, an empirical igneous geobarometer. Am. Mineral. 71, 1297-1313.
34. Harris, N.B.W., Gass, I.G., 1981. Significance of contrasting magmatism in North East Africa and Saudi Arabia. Nature 289, 394-396.
35. Harris, N.B.W., Marzouki, F.M.H., Ali, S., 1986. The Jabal Sayid Complex, Arabian Shield, geochemical constraints on the origin of peralkaline and related granites. J. Geol. Soc. London 183, 287-295.
36. Harris, N.B.W., Marriner, G.F., 1980. Geochemistry and petrogenesis of a peralkaline granite complex from the Midian Mountains, Saudi Arabia. Lithos 13, 325-337.
37. Hibbard, M.J., 1995. Petrography to Petrogenesis. Prentice-Hall, New Jersey, p. 587.
38. Holland, T., Blundy, J., 1994. Non-ideal interactions in calcic amphiboles and their bearing on amphibole-plagioclase thermometry. Contrib. Mineral. Petrol. 116, 433-447.
39. Hollister, L.S., Grissom, G.C., Peters, E.K., Stowell, H.H., Sisson, V.B., 1987. Confirmation of the empirical correlation of A1 in hornblende with pressure of solidification of calc-alkaline plutons. Am. Mineral. 72, 231-239.
40. Huppert, H.E., Sparks, R.S.J., Turner, J.S., 1983. Laboratory investigations of viscous effects in replenished magma chambers. Earth Planet. Sci. Lett. 65, 377-381.
41. Jackson, N.J., Walsh, J.N., Pegram, E., 1984. Geology, geochemistry and petrogenesis of late precambrian granitoids in the Central hijaz Region of the Arabian Shield. Contrib. Mineral. Petrol. 87, 205-219.
42. Johnson, M.C., Rutherford, M.J., 1989. Experimental calibration of an aluminum-in-hornblende geobarometer with application to Long Valley caldera (California) volcanic rocks. Geology 17, 837-841.
43. Kazmin, V., Shiferaw, A., Tefera, M., Berhe, S.M., Chewaka, S., 1979. Precambrian structure of western Ethiopia. Annals Geol. Surv. Egypt 9, 1-8.
44. Kebede, T., Koeberl, C., Koller, F., 1999. Geology, geochemistry and petrogenesis of intrusive rocks of the Wallagga area, western Ethiopia. J. Afr. Earth Sci. 29, 715-734.
45. 206 Pb ages and evolution of granitoid magmatism in western Ethiopia. Abstracts: 18th Colloquium of African Geology, Graz. J. Afr. Earth Sci. 30, 45.
46. Kebede, T., Kloetzli, U.S., Koeberl, C., 2001a. U/Pb and Pb/Pb zircon ages from granitoid rocks of Wallagga area: constraints on magmatic and tectonic evolution of Precambrian rocks of western Ethiopia. Mineral. Petrol. 71, 251-271.
47. Kebede, T., Koeberl, C., Koller, F., 2001b. Magmatic evolution of the Suqii-Wagga garnet-bearing two-mica granite, Wallagga area, western Ethiopia. J. Afr. Earth Sci. 32, 193-221.
48. Key, R.H., Charsely, T.J., Hackman, B.D., Wilkinson, A.F., Rudle, C.C., 1989. Superimposed Upper Proterozoic collision controlled orogenesis in the Mozambique Belt of Kenya. Precam. Res. 44, 197-225.
49. Klemenic, P.M., Poole, S., 1988. The geology and geochemistry of Upper Proterozoic granitoids from the Red Sea Hills, Sudan. J. Geol. Soc. London 145, 635-643.
50. Koeberl, C., 1993. Instrumental neutron activation analysis of geochemical and cosmochemical samples: a fast and reliable method for small sample analysis. J. Radioanal. Nucl. Chem. 168, 47-60.
51. Kretz, R., 1983. Symbols for rock forming minerals. Am. Mineral. 68, 277-279.
52. Kröner, A., Linnebacher, P., Stern, R.J., Reischmann, T., Manton, W., Hussein, I.M., 1991. Evolution of Pan-African island arc assemblages in the southern Red Sea Hills, Sudan, and in southwestern Arabia as exemplified by geochemistry and geochronology. Precam. Res. 53, 99-118.
53. Kröner, A., Sassi, F.P., 1996. Evolution of the northern Somali basement: new constraints from zircon ages. J. Afr. Earth Sci. 22, 1-15.
54. Kröner, A., Stem, R.J., Dawoud, A.S., Compston, W., Reischmann, T., 1987. The Pan-African continental margin in northeastern Africa: evidence from a geochronological study of granulites at Sabaloka, Sudan. Earth Planet. Sci. Lett. 85, 91- 104.
55. Landenberger, B., Collins, W.J., 1996. Derivation of A-type granites from a dehydrated Chamockitic lower crust, evidence from the Chaelundi Complex, Eastern Australia. J. Petrol. 37, 145-170.
56. Langmuir, C.H., Vocke, R.D., Hanson, G.N., Hart, S.R., 1977. A general mixing equation with applications to icelandic basalts. Earth Planet. Sci. Lett. 37, 380-392.
57. Loiselle, M.C., Wones, D.R., 1979. Characteristics and origin of anorogenic granites. Geol. Soc. Am. Abstr. Programs 11, 468.
58. Michard, P., Gurriet, P., Soudant, N., Albarede, F., 1985. Nd, external vs. internal aspects of crustal evolution. Geochim. Cosmochim. Acta 49, 601-610.
59. Moghazi, A.M., Andersen, T., Oweiss, G.A., Bouseily, A.M.E.L., 1998. Geochemical and Sr-Nd-Pb isotopic data bearing on the origin of Pan-Africaan granitoids in the Kid area, southeast Sinai, Egypt. J. Geol. Soc. London 155, 697-710.
60. Moore, J.M., Morgan, J., Tefera, M., Telday, M., 1986. Precambrian geology of Gore-Gambela Geotraverse, Western Ethiopia. Newsletter 5, 101-113 (UNESCO, Geology for Economic Development).
61. Neary, C.R., Gass, I.G., Cavanagh, B.J., 1976. Granitic association of north-eastern Sudan. Bull. Geol. Soc. Am. 87, 1501-1512.
62. Pearce, J.A., Harris, N.B.W., Tindle, A.G., 1984. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks. J. Petrol. 25, 956-983.
63. Phillips, W.R., Griffen, D.T., 1981. Optical mineralogy, The nonopaque minerals. Freeman, San Francisco, p. 677.
64. Pouchou, J.L., Pichoir, E, 1991. Quantitative analysis of homogeneous or stratified microvolumes applying the model "PAP". In: Heinrich, K.F.J., Newbury, D.E., (Eds.), Electron probe quantitation. Plenum Press, New York, pp. 31-75.
65. Reimold, W.U., Koeberl, C., Bishop, J., 1994. Roter Kamm impact crater, Namibia: geochemistry of basement rocks and breccias. Geochim. Cosmochim. Acta 58, 2689-2710.
66. Reimold, W.U., Koeberl, C., Brandstätter, F., Kruger, F.J., Armstrong, R.A., Bootsman, C., 1999. Morokweng impact structure, South Africa: Geologic, petrographic, and isotopic results, and implications for the size of the structure. In: Dressler, B.O., Sharpton, V.L. (Eds.), Large meteorite impacts and planetary evolution II: Boulder, Colorado, Geol. Soc. Am. Spec. Paper 339, pp. 61-90.
67. Rogers, J.J.W., Ghuma, M.A., Nagy, R.M., Greenberg, J.K., Fullagar, P.D., 1978. Plutonism in Pan-African belts and the geologic evolution of northeastern Africa. Earth Planet. Sci. Lett. 39, 109-117.
68. Rollinson, H., 1993. Using geochemical data: evaluation, presentation, interpretation. Addison-Wesley/Longman, Harlow, England, p. 352.
69. Shirey, S.B., Hanson, G.N., 1984. Mantle-derived Archaean monzodiorites and trachyandesites. Nature 310, 222-224.
70. Shirey, S.B., Hanson, G.N., 1986. Mantle heterogeneity and crustal recycling in Archean granite-greenstone belts: evidence from Nd isotopes and trace elements in the Rainy Lake area, Superior Province, Ontario, Canada. Geochim. Cosmochim. Acta 50, 2631-2651.
71. Skjerlie, K.P., Johnston, A.D., 1992. Vapor-absent melting at 10 kbar of biotite- and amphibole-bearing tonalitic gneiss: implications for the generation of A-type granites. Geology 20, 263-266.
72. Skjerlie, K.P., Johnston, A.D., 1993. Fluid-absent melting behaviour of an F-rich tonalitic gneiss at mid-crustal pressures: implications for the generation of anorogenic granites. J. Petrol. 34, 785-815.
73. Stern, R.J., 1994. Arc assembly and continental collision in the Neoproterozoic East African Orogen: implications for the consolidation of Gondwanaland. Annu. Rev. Earth Planet. Sci. 22, 319-351.
74. Stern, R.J., Abdelsalam, M.G., 1998. Formation of juvenile continental crust in the Arabian-Nubian Shield, evidence from granitic rocks of the Nakasib suture, NE Sudan. Geol. Rundsch. 87, 150-160.
75. Stern, R.J., Dawoud, A.S., 1991. Late Precambrian (740 Ma) chamockite, enderbite, and granite from jebel Moya, Sudan: a link between the Mozambique Belt and the Arabian-Nubian shield? J. Geol. 99, 648-659.
76. Stern, R.J., Gottfried, D., 1986. Petrogenesis of a late Precambrian (575-600 Ma) bimodal suite in Northeast Africa. Contrib. Mineral. Petrol. 92, 492-501.
77. Stern, R.J., Hedge, C.E., 1985. Geochronologic and isotopic constraints on late Precambrian crustal evolution in the eastern desert of Egypt. Am. J. Sci. 285, 97-127.
78. Stern, R.J., Kröner, A., 1993. Late Precambrian crustal evolution in NE Sudan: isotopic and geochronologic constraints. J. Geol. 101, 555-574.
79. Tadesse, T., 1996. Structure across a possible intra-oceanic suture zone in the low-grade Pan-African rocks of northern Ethiopia. J. Afr. Earth Sci. 23, 375-381.
80. Tadesse, T., Hoshino, M., Suzuki, K., Iizumi, S., 2000. Sm-Nd, Rb-Sr and Th-U-Pb zircon ages of syn- and post-tectonic granitoids from the Axum area of northern Ethiopia. J. Afr. Earth Sci. 30, 313-327.
81. Taylor, S.R., McLennan, S.M., 1985. The continental crust: its composition and evolution. Blackwell, Oxford, p. 312.
82. Taylor, R.P, Strong, D.F., Fryer, B.J., 1981. Volatile control of contrasting trace element distributions in peralkaline granitic and volcanic rocks. Contrib. Mineral. Petrol. 77, 267-271.
83. Teklay, M., Kröner, A., Mezger, K., 2000. Geochemistry, geochronology and isotope geology of the Nakfa intrusive rocks, northern Eritrea, implications for the formation of Neoproterozoic juvenile crust in the southern Arabian-Nubian Shield. J. Afr. Earth Sci. (Special Absract Issue) 30, 84-85.
84. Whalen, J.B., Currie, K.L., 1984. The Topsails terrane, Western Newfoundland, evidence for magma mixing. Contrib. Mineral. Petrol. 87, 319-327.
85. Whalen, J.B., Currie, K.L., Chappell, B.W., 1987. A-type granites, chemical characteristics, discrimination and petrogenesis. Contrib. Mineral. Petrol. 95, 407-419.
86. White, A.J.R., Chappell, B.W., 1983. Granitoid types and their distribution in the Lachlan Fold Belt, southeastern Australia. Geol. Soc. Am. Mem. 159, 21-34.
87. 8 between coexisting microcline and plagioclase and its effect on geothermometric calculations. Am. Mineral. 62, 687-691.
88. Wright, T.L., Doherty, P.C., 1970. A linear programming and least squares computer method for solving petrologic mixing problems. Geol. Soc. Am. Bull. 81, 1995-2008.