Evolution of the northern Somali basement: New constraints from zircon ages

Journal of African Earth Sciences

Volumn 22, Issue 1, 1996, Pages 1-15

  Kroner A ^a   Sassi, F P ^b  

^a JOHANNES GUTENBERG UNIVERSITY   (Germany)

^b UNIVERSITY OF PADOVA   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

AGE DETERMINATION; BASEMENT; PROTEROZOIC; ZIRCON;

SOMALIA;

EID: 0029773240     PISSN: 08995362     EISSN: None     Source Type: Journal    
DOI: 10.1016/0899-5362(95)00121-2     Document Type: Article

References (45)

1. Abbate, E., Ali Kassim, M., Dal Piaz, G. V., Gosso, G., Ibrahim, H. A. and Rigatti, G. 1981. Note di rilevamento sul basamento cristallino della Somalia settentrionale nell'area Rugay-Maydh-Hiis (Distretto di Ceerigavo). Rendiconti Società Geologica Italiana 4, 333-337.
2. Abbate, E., Bonazzi, A., Savioli Mariani, E., Dal Piaz, G. V., Del Moro, A., Gosso, G. and Ibrahim, H. A. 1985. Il settore dell'Unità di Inda Ad ed il granito di Arar (Somalia settentrionale). Quaderni Geologia Somalia 8, 7-25.
3. Abbate, E., Sagri, M. and Sassi, F. P. (Editors) 1989. Geology and mineral resources of Somalia and surrounding regions. 734p. Relazioni e Monografie 113A/1993 Istituto Agronomico Oltremare, Firenze.
4. Ayalew, T., Bell, K., Moore, J. M. and Parish, R. R. 1990. U-Pb and Rb-Sr geochronology of the Western Ethiopian shield. Geological Society America Bulletin 102, 1309-1316.
5. Bakos, F. and Sassi, F. P. 1994. Il giacimento uranotorifero di Alio Ghelle nel contesto evolutivo del basamento cristallino dei Buur (Somalia Sudoccidentale). In: Abstracts Giornata Lincea sulla Geologia della Somalia, 4 November 1994 pp37-39. Accademia Nazionale dei Lincei, Roma.
6. Beydoun, Z. R. 1970. Southern Arabia and Northern Somalia: comparative geology. Philosophical Transactions Royal Society London A267, 267-292.
7. Bigioggero, B., Dal Piaz, G. V., Del Moro, A., Ibrahim, H. A., Martin, S., Rigatti, G. and Savioli Mariani, E. 1989. Pan-African foliated granites and post-tectonic granitoids from North-Eastern Somalia. In: Geology and mineral resources of Somalia and surrounding regions (Edited by Abbate, E., Sagri, M. and Sassi, F. P.) pp91-118. Relazioni e Monografie 113A/1993 Istituto Agronomico Oltremare, Firenze.
8. Binda, M., Omenetto, P. and Warden, A. J. 1989. Mineral deposits and occurrences in the Precambrian in northeast Africa and Arabia: a review. In: Geology and mineral resources of Somalia and surrounding regions (Edited by Abbate, E., Sagri, M. and Sassi, F.P.) pp429-516. Relazioni e Monografie 113A/1993 Istituto Agronomico Oltremare, Firenze.
9. Carmignani, L., Ferrara, G., Ricci, C. A., Sassi, F. P., Tonarini, S., Visonà, D. and Zirpoli, G. 1987. New radiometric ages on the "Younger Granites" of the Bur Area (Southern Somalia). In: Abstracts International Meeting Geology Somalia GEOSOM '87, p46. Somali National University, Mogadishu, Somalia.
10. Chapman, H. J. and Roddick, J. C. 1994. Kinetics of Pb release during the zircon evaporation technique. Earth Planetary Science Letters 121, 601-611.
11. Compston, W., Williams, I. S., Campbell, I. H. and Greshan, J. J. 1986. Zircon xenocrysts from the Kambalda volcanics: age constraints and direct evidence for older continental crust below the Kambalda-Norseman greenstones. Earth Planetary Science Letters 76, 299-311.
12. Dal Piaz, G. V. and Sassi, F. P. 1986. The crystalline basements of Somalia: a review. Memorie Società Geologica Italiana 31, 351-361.
13. Dal Piaz, G. V., Rigatti, G., Galli, L., Messiga, B., Piccardo, G. B., Borgognoni, S., Gosso, G., Spalla, M. I., Peccerillo, A., Poli, G., Parrini, P. L., Todaro, M. L., Ferrara, G. and Tonarini, S. 1985. Il gabbro di Sheikh (Somalia settentrionale): dati geologici, petrografici, geochimici e geocronologici preliminari. Quaderni Geologia Somalia 8, 151-186.
14. Dal Piaz, G. V., Ibrahim, H. A., Gosso, G., Piccardo, G. B. and Rigatti, G. 1987. The Sheikh gabbro body and the Hudiso paragneisses. In: Guidebook Excursion B. (International Meeting Geology Somalia GEOSOM '8T) pp23-42. Somali National University, Mogadishu, Somalia.
15. Dal Piaz, G. V., Ibrahim, H. A., Martin, S., Piccardo, G. B., Rigatti, G. and Venturelli, G. 1989. Pan-African metabasalts from the Maydh area, Northeastern Somalia. In: Geology and mineral resources of Somalia and surrounding regions (Edited by Abbate, E., Sagri, M. and Sassi, F. P.) pp41-57. Relazioni e Monografie 113A/1993 Istituto Agronomico Oltremare, Firenze.
16. D'Amico, C., Ibrahim, H. A. and Sassi, F. P. 1981. Outline of the Somalian Basement. Geologische Rundschau 70, 882-896.
17. Daniels, J. L., Skiba, W. J. and Sutton, J. 1965. The deformation of some banded gabbros in the northern Somalia fold-belt. Quarterly Journal Geological Society London 121, 111-142.
18. Dixon, W. J. 1950. Analyses of extreme values. Annals Mathematics Statistics 21, 488-506.
19. Gatto, G. O., Ibrahim, H. A., Sassi, F. P., Visonà, D. and Ali Kassim, M. 1981. Contributo alla conoscenza del basamento della Somalia (distretti di Berbera e Burao). Quaderni Geologia Somalia 5, 27-41.
20. Gatto, G. O., Visonà, D. and Said, A. A. 1985. Note di rilevamento sul basamento cristallino della Somalia (distretti di Berbera e Burao). Quaderni Geologia Somalia 8, 243-255.
21. Guide Book to the Excursion B. 1987, International Meeting Geology Somalia GEOSOM '87. 48p. Somali National University, Mogadishu, Somalia.
22. Haider, A. 1989. Géologie de la formation ferrifere précambrienne et du complexe granulitique encaissant de Buur (sud de la Somalie). Implications sur l'évolution crustale du socle de Buur. Ph. D. thesis 157p. INPL Nancy, France.
23. 206Pb age investigations on single zircons using a double-filament thermal ion source. Contributions Mineralogy Petrology 93, 482-490.
24. 206Pb age investigations using thermal ion mass spectrometry, and implications to zirconology. Contributions Mineralogy Petrology 96, 63-71.
25. Kober, B., Pidgeon, R. T. and Lippolt, H. J. 1989. Single-zircon dating by stepwise Pb-evaporation constrains the Archean history of detrital zircons from the Jack Hills, Western Australia. Earth Planetary Science Letters 91, 286-296.
26. Kröner, A. and Todt, W. 1988. Single zircon dating constraining the maximum age of the Barberton greenstone belt, southern Africa. Journal Geophysical Research 93, 15329-15337.
27. Kröner, A. and Williams, I. S. 1993. Age of metamorphism in the high-grade rocks of Sri Lanka. Journal Geology 101, 513-521.
28. Kröner, A., Eyal, M., Eyal, Y., Sassi, F. P. and Teklay, M. 1989. Extension of the Arabian-Nubian shield into southern Israel, Ethiopia and northern Somalia. Terra Abstracts, pp363.
29. Kröner, A., Byerly, C. R. and Lowe, D. R. 1991. Chronology of early Archaean granite-greenstone evolution in the Barberton Mountain Land, South Africa, based on precise dating by single zircon evaporation. Earth Planetary Science Letters 103, 41-54.
30. Lenoir, J. L., Küster, D., Liégeois J.-P., Utke, A., Haider, A. and Matheis, G. 1994. Origin and regional significance of late Precambrian and early Palaeozoic granitoids in the Pan-African belt of Somalia. Geologische Rundschau 83, 624-641.
31. Paquette, J.-L., Nédélec, A., Moine, B. and Rakotondrazafy, M. 1994. U-Pb, single zorcon evaporation and Sm-Nd isotopic study of a granulitic domain in S.E. Madagascar. Journal Geology 102, 523-538.
32. Pidgeon, R. T., Furfaro, D., Kennedy, A. and van Bronswjk, W. 1994. Calibration of the CZ3 zircon standard for the Curtin SHRIMP II. US Geological Survey Circular 1107, 251.
33. Pohl, W. 1988. Precambrian metallogeny of Northeast Africa. In: The Pan-African Belt of Northeast Africa and adjacent areas (Edited by El-Gaby, S. and Greiling, R. O.) pp319-341. Vieweg and Sohn, Braunschweig.
34. Said, A. A. 1987. Preliminary data on the amphibolization of the layered gabbros NW of Sheik (Northern Somalia). In: Abstracts International Meeting Geology Somalia GEOSOM '87. pp117. Somali National University, Mogadishu, Somalia.
35. Said, A. A. 1988. Trasformazione gabbro-anfibolite: un esempio dal basamento della Somalia settentrionale. Ph. D. dissertation 137p. University of Padova, Italy.
36. Sassi, F. P. and Ibrahim, H. A. 1981. Tentativo di schematizzazione dei problemi litostratigrafici e di correlazione del basamento della Somalia Settentrionale. Quaderni Geologia Somalia 5, 91-101.
37. Sassi, F. P. and Visonà, D. 1989. Relics of granulitic mineral assemblages in the Northern Somali crystalline basement. In: Geology and mineral resources of Somalia and surrounding regions (Edited by Abbate, E., Sagri, M. and Sassi, F. P.), pp83-90. Relazioni e Monografie 113A/1993 Istituto Agronomico Oltremare, Firenze.
38. Sassi, F. P., Visonà, D., Ferrara, G., Gatto, G. O., Ibrahim, H. A. and Tonarini, S. 1989. The crystalline basement of northern Somalia: lithostratigraphy and the sequence of events. In: Geology and mineral resources of Somalia and surrounding regions (Edited by Abbate, E., Sagri, M. and Sassi, F. P.), pp3-40. Relazioni e Monografie 113A/1993 Istituto Agronomico Oltremare, Firenze.
39. Shackleton, R. M. 1988. Contrasting structural relationships of Proterozoic ophiolites in Northeast and East Africa. In: The Pan-African Belt of Northeast Africa and adjacent areas (Edited by El-Gaby, S. and Greiling, R. O.) pp183-193. Vieweg and Sohn, Braunschweig.
40. Stöser, D. B., Stacey, J. S., Greenwwod, W. R. and Fisher, L. B. 1984. U/Pb zircon geochronology of the southern part of the Nabitah mobile belt and Pan-African continental collision in the Saudi Arabia. Technical Record UGSG-TR-04-5, 88p. Saudi Arabian Deputy Ministry Mineral Resources, Jeddah, Saudi Arabia.
41. Teklay, M., Kröner, A. and Oberhänsli, R. 1993. Reconnaissance Pb-Pb zircon ages from Precambrian rocks in eastern and southern Ethiopia and an attempt to define crustal provinces, In: Geoscientific research in northeast Africa (Edited by Thorweihe, U. and Schandelmeier, H.) pp133-138. Balkema, Rotterdam.
42. Visonà, D. 1989. The Daba Shabeli gabbro-syenite complex: an element of the Gabbro Belt in the Northern Somali Basement In: Geology and mineral resources of Somalia and surrounding regions (Edited by Abbate, E., Sagri, M. and Sassi, F. P.) pp59-82. Relazioni e Monografie 113A/1993 Istituto Agronomico Oltremare.
43. Warden, A. J. and Daniels, J. L. 1984. Evolution of the Precambrian of Northern Somalia. Bulletin Faculty Earth Sciences King Abdulaziz University Jeddah 6, 145-164.
44. Warden, A. J. and Horkel, A. D. 1984. The geological evolution of the NE branch of the Mozambique Belt (Kenya, Somalia, Ethiopia). Mitteilungen Österreichen Geologischen Gesellschaft 77, 161-184.
45. Whitehouse, M. J., Windley, B. F. and Ba-Bttat, M. A. 1993. Tectonic framework and geochronology of the southern Arabian shield, Yemen. EOS, Transactions American Geophysical Union Supplement 74, 300-301.