Moho depths and Poisson's ratios of Precambrian crust in East Africa: Evidence for similarities in Archean and Proterozoic crustal structure

Earth and Planetary Science Letters

Volumn 355-356, Issue , 2012, Pages 73-81

  Tugume, Fred ^a   Nyblade, Andrew ^a   Julià, Jordi ^b  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

^b FEDERAL UNIVERSITY OF RIO GRANDE DO NORTE   (Brazil)

Author keywords

Africa; Crust; Precambrian; Tectonics

Indexed keywords

AFRICA; ARCHEAN; CRUST; CRUSTAL COMPOSITION; CRUSTAL MATERIALS; CRUSTAL STRUCTURE; CRUSTAL THICKNESS; DATA SETS; EAST AFRICA; EAST AFRICANS; ECLOGITES; FIRST-ORDER; LITHOSPHERIC RHEOLOGY; MANTLE STRUCTURE; MOHO DEPTH; POISSON'S RATIO; PRECAMBRIAN; PROTEROZOIC; RECEIVER FUNCTIONS; SEISMIC STATION; TANZANIA;

POISSON RATIO; SEISMOLOGY; TECTONICS;

STRUCTURAL GEOLOGY;

ARCHEAN; CRUSTAL STRUCTURE; CRUSTAL THICKNESS; ECLOGITE; MANTLE STRUCTURE; MOHO; P-WAVE; POISSON RATIO; PRECAMBRIAN; PROTEROZOIC; RIFTING; TECTONIC STRUCTURE;

EAST AFRICAN PLATEAU; TANZANIA; UGANDA;

EID: 84867120361     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.epsl.2012.08.041     Document Type: Article

References (59)

1. Arndt N.T. An open boundary between lower continental crust and mantle: its role in crust formation and crustal recycling. Tectonophysics 1989, 161:201-212.
2. Austrheim H. Eclogite formation and dynamics of crustal roots under continental collision zones. Terra Nova 1991, 3:492-499.
3. Begg G.C., Griffin W.L., Natapov L.M., O'Reilly, Suzanne Y., Grand S.P., O'Neill C.J., Hronsky J.M.A., Djomani Y.P., Swain C.J., Deen T., Bowden P. The lithospheric architecture of Africa: Seismic tomography, mantle petrology, and tectonic evolution. Geosphere 2009, 5(1):23-50. 10.1130/GES00179.1.
4. Bonjer K.P., Fuchs K., Wohlenburg J. Crustal structure of the East African rift system from spectral response ratios of long period bodywaves. Z. Geophys. 1970, 36:287-297.
5. Bram K., Schmeling B.D. Structure of the crust and upper-mantle beneath the western rift of East Africa, derived from investigations of near earthquakes. Afar Between Continental and Oceanic Rifting 1975, 138-142. Schweizerbart, Stuttgart, Germany. A. Pilger, A. Rosler (Eds.).
6. Cahen L., Snelling N., Delhal J., Vail J. The Geochronology and Evolution of Africa 1984, Clarendon Press, Oxford, United Kingdom.
7. Chen Y., Niu F., Liu R., Huang Z., Tkalicic H., Sun L., Chan W. Crustal structure beneath China from receiver function analysis. J. Geophys. Res. 2010, 115:B03307. 10.1029/2009JB006386.
8. Chevrot N.I., van der Hilst R.D. The Poisson's ratio of the Australian crust; geological and geophysical implications. Earth Planet. Sci. Lett. 2000, 183:121-132.
9. Christensen N.I. Poisson's ratio and crustal seismology. J. Geophys. Res. 1996, 101:3139-3156.
10. Christensen N.I., Mooney W.D. Seismic velocity structure and composition of the continental crust: a global view. J. Geophys. Res. 1995, 100:9761-9788.
11. Costa S., Rey P. Lower crustal rejuvenation and growth during post-thickening collapse-insights from a crustal cross-section through a Variscan metamorphic core complex. Geology 1995, 23:905-908.
12. De Waele B., Johnson S.P., Pisarevsky S.A. Palaeoproterozoic to Neoproterozoic growth and evolution of the eastern Congo Craton: its role in the Rodinia puzzle. Precambrian Res. 2008, 160:127-141.
13. Dugda M.T., Nyblade A.A., Julia J., Langston C.A., Ammon C.J., Simiyu S. Crustal structure in Ethiopia and Kenya from receiver function analysis: implications for rift development in eastern Africa. J. Geophys. Res. 2005, 110:B01303. 10.1029/2004JB003065.
14. Dugda M.T., Nyblade A.A., Julia J. S-wave velocity structure of the crust and upper mantle beneath Kenya in comparison to Tanzania and Ethiopia: implication or the formation of the East African and Ethiopian plateaus. S. Afr. J. Geol. 2009, 112:241-250. 10.2113/gssajg.112.3-4.241.
15. Durrheim R.J., Mooney W.D. Archean and Proterozoic crustal evolution: evidence from crustal seismology. Geology 1991, 19:606-609.
16. Durrheim R.J., Mooney W.D. Evolution of the Precambrian lithosphere: seismological and geochemical constraints. J. Geophys. Res. 1994, 99:15359-15374.
17. Ebinger C.J. Tectonic development of the western branch of the East Africa Rift System. Bull. Seismol. Soc. Am. 1989, 101:885-903.
18. Efron B., Tibshirani R. Statistical data analysis in computer age. Science 1991, 253:390-395.
19. Fuchs K., Altherr B., Muller B., Prodehl C. Structure and dynamic processes in the lithosphere of the Afro-Arabian rift system. Tectonophysics 1997, 278:1-352.
20. Griffiths D., King R., Khan M., Blundell D. Seismic refraction line in the Gregory Rift. Nature 1971, 229:69-71.
21. Goodwin A.M. Principles of Precambrian Geology 1996, Academic Press, London, (pp. 327).
22. Hebert L., Langston C.A. Crustal thickness estimate at AAE (Addis-Ababa, Ethiopia) and NAI (Nairobi, Kenya) using teleseismic P-wave conversions. Tectonophysics 1985, 111:299-327.
23. Hetzel R., Strecker M.R. Late Mozambique Belt structures in western Kenya and their influence on the evolution of the Cenoizoic Kenya Rift. J. Struct. Geol. 1994, 16(2):189-201.
24. Jarchow C.M., Thompson G.A. The nature of the Mohorovicic Discontinuity. Annu. Rev. Earth Planet. Sci. 1989, 17:475-506.
25. Julia J., Ammon C.J., Nyblade A.A. Evidence for mafic lower crust in Tanzania, East Africa, from joint inversion of receiver functions and Rayleigh wave dispersion velocities. Geophys. J. Int. 2005, 162:555-569.
26. Julia J. Constraining velocity and density contrasts across the crust mantle boundary with receiver function amplitudes. Geophys. J. Int. 2007, 171:286-301. 10.1111/j.1365-2966.2007.03502.x.
27. Kennett B.L.N., Salmon M., Saygin E. AusMoho: the variation of Moho depth in Australia. Geophys. J. Int. 2012, 187:946-958. Ausmoho working group.
28. Kgaswane E.M., Nyblade A.A., Julia J., Dirks P.H.G.M., Durrheim R.J., Pasyanos M.E. Shear wave velocity structure of the lower crust in Southern Africa: evidence for composition heterogeneity within the Archean and Proterozoic terrains. J. Geophys. Res. 2009, 114:B12304. 10.1029/2008JB006217.
29. Klerkx J. Crustal evolution of northern Kibaran Belt, eastern and central Africa. Geodyn. Ser. 1987, 17:217-233.
30. Langston C.A. Structure under Mount Rainier, Washington, inferred from teleseismic body waves. J. Geophys. Res. 1979, 84:4749-4762.
31. Last R.J., Nyblade A.A., Langston C.A., Owens T.J. Crustal structure of the East African Plateau from receiver functions and Rayleigh wave phase velocities. J. Geophys. Res. 1997, 102:24469-24483.
32. Lenoir J.L., Liegeois J.P., Theunissen K., Klerkx J. The palaeoproterozoic Ubendian shear belt in Tanzania; geochronology and structure. J. Afr. Earth Sci. 1994, 19:160-184.
33. Ligorria J.P., Ammon C.J. Iterative deconvolution and receiver function estimation. Bull. Seismol. Soc. Am. 1999, 89:1395-1400.
34. Long R.E., Backhouse R.W., Maguire P.K.H., Sundarlingham K. The structure of East Africa using the surface wave dispersion and Durham seismic array data. Tectonophysics 1972, 15:165-178.
35. Manya S.M., Maboko M.A.H. Dating basaltic volcanism in the Neoarchean Sukumaland Greenstone Belt of the Tanzania Craton using the Sm-Nd method: implications for the geological evolution of the Tanzania Craton. Precambrain Res. 2003, 121:35-45.
36. McConnell R.B. Geological development of the rift system of eastern Africa. Geol. Soc. Am. Bull. 1972, 83:2549-2572.
37. Moucha R., Forte A.M. Changes in African topography driven by mantle convection. Nat. Geosci. 2011, 4:707-712.
38. Mueller S., Bonjer K.P. Average structure of the crust and upper mantle in East Africa. Tectonophysics 1973, 20:238-253.
39. Nair S.K., Gao S.S., Liu K.H., Silver P.G. Sothern Africa crustal evolution and composition: constraints from receiver function studies. J. Geophys. Res. 2006, 111:B02304. 10.1029/2005JB003802.
40. Nolet G., Mueller S. A model for the deep structure of the East African rift system from the simultaneous inversion of teleseismic data. Tectonophysics 1982, 84:151-178.
41. Nyblade A.A., Brazier R.A. Precambrian lithospheric controls on the development of the East Africa Rift System. Geology 2002, 30(8):755-758.
42. Nyblade A.A., Langston C.A. Broadband seismic experiments probe the East African rift. EOS Trans. AGU 2002, 83:405-408.
43. Nyblade A.A., Birt C., Langston C.A., Owens T.J., Last R. Seismic experiments reveals rifting of Craton in Tanzania. EOS Trans. AGU 1996, 77:517-521.
44. Owens T.J., Zandt G. Implications of crustal property variations for models of the Tibetan Plateau. Nature 1997, 387:37-43.
45. Prodehl, C., Keller, G.R., Khan, M.A. (Eds.), 1994. Crustal and upper mantle structure beneath Kenya rift. Tectonophysics 236, 483 (special issue).
46. Rey P., Vanderhaeghe O., Teyssier C. Gravitational collapse of the continental crust: definition, regimes and modes. Tectonophysics 2001, 342:435-449.
47. Rudnick R.L., Fountain D.M. Nature and composition of the continental crust the continental crust: a lower crustal perspective. Rev. Geophys. 1995, 33:267-309.
48. Shackleton R.M. Precambrian collision tectonics in Africa, collision tectonics. Geol. Soc. Spec. Publ. 1986, 19:329-349.
49. Schulter T. Geology of East Africa 1997, Borntraeger, Druckerei zu Altenburg GmbH, Berlin, Stuttgart, Germany.
50. Tesha A.L., Nyblade A.A., Keller G.R., Doser D.I. Rift localization in suture-thickened crust: evidence from Bouguer gravity anomalies in northern Tanzania, East Africa. Tectonophysics 1997, 274(1-4):315-328.
51. Tokam A.-P.K., Tabod C.T., Nybalde A.A., Julia J., Wiens D.A., Pasyanos M.E. Structure of the crust beneath Cameroon, West Africa, from joint inversion of Rayleigh wave group velocities and receiver functions. Geophys. J. Int. 2010, 183:1061-1076. 10.1111/j.1365-246X.2010.04776.x.
52. Tokav A.P., Vavakin V.V. Poisson's ratio behavior in crystalline rocks: application to study of the Earth's interior. Phys. Earth Planet. Inter. 1982, 29:24-29.
53. Thompson D.A., Bastow I.D., Helffrich G., Kendall J.M., Wookey J., Snyder D.B., Eaton D.W. Precambrian crustal evolution: seismic constraints from the Canadian Shield. Earth Planet. Sci. Lett. 2010, 297:655-666.
54. Tugume, F., 2011. The Precambrian Crustal Structure of East Africa. Ph.D. Thesis. The Pennsylvania State University, pp. 196.
55. Wolbern I., Rumpker G., Schumann A., Muwanga A. Crustal thinning beneath the Rwenzori region, Albertine rift, Uganda, from receiver function analysis. Int. J. Earth. Sci. (Geol Rundsch.) 99, 1545-1557 2010, 10.1007/s00531-009-0509-2.
56. Zandt G., Ammon C.J. Continental crust composition constrained by measurements of crustal Poisson's ratio. Nature 1995, 374:152-154.
57. Zandt G., Myers S.C., Wallace T.C. Crust and mantle structure across the basin and range-Colorado Plateau boundary at 37°N latitude and implications for Cenozoic extensions mechanism. J. Geophys. Res. 1995, 100:10529-10548.
58. Zandt G., Gilbert H., Owens T.J., Duceau M., Saleeby J., Jones C.H. Active foundering of a continental arc root beneath the southern Sierra Nevada in California. Nature 2004, 43:41-46.
59. Zhu L., Kanamori H. Moho depth variation in Southern California from teleseimic receiver functions. J. Geophys. Res. 2000, 105:2969-2980.