Morphotectonic evolution of the central Kenya rift flanks: Implications for late Cenozoic environmental change in East Africa

Geology

Volumn 35, Issue 5, 2007, Pages 427-430

  Spiegel, Cornelia ^a,b   Kohn, Barry P ^a   Belton, David X ^a,c   Gleadow, Andrew J W ^a  

^a UNIVERSITY OF MELBOURNE   (Australia)

^b UNIVERSITY OF TÜBINGEN   (Germany)

^c CSIRO   (Australia)

Author keywords

Apatite (U Th) He analysis; Climate change; Kenya rift valley; Late Neogene; Thermochronology

Indexed keywords

ACTIVE CONTINENTAL RIFT ZONE; APATITE FISSION TRACK; KENYA RIFT VALLEY; LATE NEOGENE;

APATITE; CLIMATE CHANGE; COOLING; GEOCHRONOLOGY;

TECTONICS;

CLIMATE CHANGE; NEOGENE; RIFT ZONE; TECTONIC EVOLUTION; THERMOCHRONOLOGY; UPLIFT;

AFRICA; EAST AFRICA; KENYA; SUB-SAHARAN AFRICA;

EID: 34248571389     PISSN: 00917613     EISSN: 00917613     Source Type: Journal    
DOI: 10.1130/G23108A.1     Document Type: Article

References (22)

1. Bobe, R., and Behrensmeyer, A.K. 2004, The expansion of grassland ecosystems in Africa in relation to mammalian evolution and the origin of the genus Homo: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 207, p. 399-420, doi: 10.1016/SO031-0182(04)00049-5.
2. Bosworth, W., 1987, Off-axis volcanism in the Gregory rift, East Africa: Implications for models of continental rifting: Geology, v. 15, p. 397-400, doi: 10.1130/0091-7613(1987)15<397:OVITGR>2.0.CO;2.
3. Cane, M.A., and Molnar, R, 2001, Closing of the Indonesian seaway as a precursor to east African aridification around 3-4 million years ago: Nature, v. 411, p. 157-162, doi: 10.1038/35075500.
4. Cerling, T.E., 1992, Development of grasslands and savannas in East Africa during the Neogene: Global and Planetary Change, v. 5, p. 241-247, doi: 10.1016/0921-8181(92)90013-Z.
5. Davies, T.D., Vincent, C.E., and Beresford, A.K.C., 1985, Rainfall in west-central Kenya: Journal of Climatology, v. 5, p. 17-33.
6. Dunai, T., 2005, Forward modelling and interpretation of (U-Th)/He ages, in Reiners, P.W., and Ehlers, T.A., eds., Low-temperature thermochronology: Techniques, interpretations, and applications: Reviews in Mineralogy and Geochemistry, v. 58, p. 259-274.
7. Ebinger, C.J., 1989, Tectonic development of the western branch of the East African rift system: Geological Society of America Bulletin, v. 101, p. 885-903, doi: 10.1130/ 0016-7606(1989)101<0885:TDOTWB>2.3.CO;2.
8. Fairhead, J.D., and Binks, R.M., 1991, Differential opening of the Central and South Atlantic Oceans and the opening of the West African rift system: Tectonophysics, v. 187, p. 191-203, doi: 10.1016/ 0040-1951(91)90419-S.
9. Farley, K.A., and Stockli, D.F., 2002, (U-Th)/He dating of phosphates: Apatite, monazite and xenotime, in Kohn, M., et al., eds., Phosphates - Geochemical, geobiological and material importance: Mineralogical Society of America Reviews in Mineralogy and Geochemistry, v. 48, p. 557-577.
10. Foster, D.A., and Gleadow, A.J.W., 1992, The morphotectortic evolution of rift-margin mountains in central Kenya; constraints from apatite fission-track thermochronology: Earth and Planetary Science Letters, v. 113, p. 157-171, doi: 10.1016/0012-821X(92)90217-J.
11. Foster, D.A., and Gleadow, A.J.W., 1996, Structural framework and denudation history of the flanks of the Kenya and Anza rifts: East Africa: Tectonics, v. 15, p. 258-271, doi: 10.1029/95TC02744.
12. Haug, G.H., Tiedemann, R., Zahn, R., and Ravelo, A.C., 2001, Role of Panama uplift on oceanic freshwater balance: Geology, v. 29, p. 207-210, doi: 10.1130/0091-7613(2001)029<0207:ROPUOO>2.0.CO;2.
13. Latorre, C., Quade, J., and McIntosh, W.C., 1997, The expansion of C4 grasses and global change in the late Miocene; stable isotope evidence from the Americas: Earth and Planetary Science Letters, v. 146, p. 83-96, doi: 10.1016/SO012-821X(96)00231-2.
14. Maslin, M.A., Haug, G.H., Samthein, M., Tiedemann, R., Erlenkeuser, H., and Stax, R., 1995, Northwest Pacific Site 882; the initiation of Northern Hemisphere glaciation, in Proceedings of the Ocean Drilling Program, Scientific results, Volume 145: College Station, Texas, Ocean Drilling Program, p. 315-329.
15. Meesters, A.G., and Dunai, T.J., 2002, Solving the production-diffusion equation for finite diffusion domains of various shapes; part II, Application to cases with alpha ejection and nonhomogeneous distribution of the source: Chemical Geology, v. 186, p. 57-73, doi: 10.1016/ SO009-2541(01)00423-5.
16. Mugisha, F., Ebinger, C.J., Strecker, M., and Pope, D., 1997, Two-stage rifting in the Kenya Rift; implications for half-graben models: Tectonophysics, v. 278, p. 63-81, doi: 10.1016/SO040-1951(97)00095-4.
17. Pickford, M., 1990, Uplift of the roof of Africa and its bearing on the evolution of mankind: Journal of Human Evolution, v. 5, p. 1-20, doi: 10.1007/BF02436472.
18. Pickford, M., 1994, Patterns of sedimentation and fossil distribution in the Kenya Rift valleys: Journal of African Earth Sciences, v. 18, p. 51-60.
19. Quade, J., Cerling, T.E., and Bowman, J.R., 1999, Development of Asian monsoon revealed by marked ecological shift during the latest Miocene in northern Pakistan: Nature, v. 342, p. 163-166.
20. Smith, M., 1994, Stratigraphic and structural constraints on mechanisms of active rifting in the Gregory Rift, Kenya: Tectonophysics, v. 236, p. 3-22, doi: 10.1016/0040-1951(94)90166-X.
21. Wheildon, J., Morgan, R, Williamson, K.H., Evans, T.R., and Swanberg, C.A., 1994, Heat flow in the Kenya Rift zone: Tectonophysics, v. 236, p. 131-149, doi: 10.1016/0040-1951(94)90173-2.
22. Wolf, K.A., Farley, K.A., and Kass, D.M., 1998, Modelling of the temperature sensitivity. of the apatite (U-Th)/He thermochronometer: Chemical Geology, v. 148, p. 105-114, doi: 10.1016/SO009-2541(98)00024-2.