, Volume 267, Issue 1–3, pp 99–112 | Cite as

Effects of microbial activity on the hydrochemistry and sedimentology of Lake Logipi, Kenya

  • Sabine Castanier
  • Marie-Claire Bernet-Rollande
  • André Maurin
  • Jean-Pierre Perthuisot


Lake Logipi is a saline soda and alkaline lake which marks the northern termination of the Suguta River drainage system. It also receives waters from streams, possible seepage from Lake Turkana, and hot springs. Present hydrochemistry and sedimentology is controlled by numerous factors including seasonal variations, composition of incoming waters, water depth and, above all, bacterial activity. Given the scarcity of Ca2+ and Mg2+ in the lake waters, bacterial activity seems to intensify the alkalinization of the waters which inhibits the deposition of organic matter and leads to the genesis of a poorly organic, zeolitic mud that reaches 1.5 m in tickness in the deepest part of the lake. This black layer may be overlaid with thin crusts of trona and halite which prograde over the basin from its southern bank when the lake is drying out and which are dissolved in the lake waters during the rainy season.

Key words

soda lake bacteria sediment recent Kenya 


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  1. Bosworth, W., 1989. Basin and range style tectonics in east Africa. J. Afr. Earth Sci. 8: 191–201.Google Scholar
  2. Castanier, S., 1987. Microbiogéologie: processus et modalités de la carbonatogenèse microbienne. State Doctorate Thesis, University of Nantes, France, 541 pp.Google Scholar
  3. Castanier, S., A. Maurin & J.-P. Perthuisot, 1988. Les Cugnites: carbonates amorphes de Ca et Mg, précurseurs possibles de la dolomite. C. r. Acad. Sci., Paris, 306, II: 1231–1235.Google Scholar
  4. Eugster, H. P., 1967. Hydrous sodium silicates from Lake Magadi, Kenya. Contr. Mineral. Petrol. 22: 1–31.Google Scholar
  5. Eugster, H. P., 1970. Chemistry and origin of the brines of Lake Magadi, Kenya. Mineral. Soc. Amer. Spec. Paper 3: 215–235.Google Scholar
  6. Gwynne, M. D., 1969. The South Turkana Expedition. Scientific Papers I. Preliminary report on the 1968 season. Geogr. J. 135: 331–342.Google Scholar
  7. Hungate, R. E., 1969. A roll tube method for cultivation of strict anaerobes. In Norris and Ribbons (eds), Methods in Microbiology, Vol. 3B, Academic Press, London and New York: 117–132.Google Scholar
  8. Lambiase, J. J. & W. Bosworth, 1991. Structural Controls on Sedimentation in Continental rifts. Geol. Soc. Amer. Bull., in press.Google Scholar
  9. Maglione, G., 1974. Géochimie des évaporites et silicates néoformés en milieu continental confiné. Les dépressions interdunaires du Tchad, Afrique. State Doctorate Thesis, University P. & M. Curie, Paris, 334 pp.Google Scholar
  10. Marty, D., 1981. Distribution of different anaerobic bacteria in Arabian Sea sediments. Mar Biol. 63: 277–281.Google Scholar
  11. Marty, D. & J. E. Garcin, 1987. Présence de bactéries méthanogènes méthylotropes dans les sédiments profonds du détroit de Makassar (Indonésie). Oceanol. Acta 10: 249–253.Google Scholar
  12. McCrady, M. H., 1918. Tables for rapid interpretation of fermentative tube results. Can. J. Publi. Health, 9: 201–216.Google Scholar
  13. Oppenheimer, C. H. & C. E. Zobell, 1952. The growth and viability of sixty three species of marine bacteria as influenced by hydrostatic pressure. J. mar. Res. 11: 10–18.Google Scholar
  14. Ottman, J. M., 1960. Essai de détermination qualitative et quantitative de quelques constituants de la matière organique dans un sédiment marin. Revue Geogr. Phys. Geol. Dynam., Paris, 3, 1: 49–52.Google Scholar
  15. Rodier, J., 1984. L'analyse de l'eau, eaux naturelles, eaux résiduaires, eau de mer. Dunod, Paris: 564 pp.Google Scholar
  16. Schopf, J. W. & M. R. Walter, 1983. Archean Microfossils: New Evidence of Ancient Microbes. In Schoph (ed.), Earth's Earliest Biosphere. Its origin and evolution. Princeton University Press, Princeton: 214–289.Google Scholar
  17. Solorzano, L., 1969. Determination of ammonia in natural waters by the phenylhypochlorite method. Limnol. Oceanogr.: 14–779.Google Scholar
  18. Zajic, J. E., 1969. Microbial biogeochemistry. Academic Press, New York & London, 247 pp.Google Scholar
  19. Zins-Pawlas, M.-P., 1988. Géochimie de la silice dans les saumures et les milieux évaporitiques. Doctorate Thesis, University of Strasbourg, France, 200 pp.Google Scholar

Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • Sabine Castanier
    • 1
    • 2
  • Marie-Claire Bernet-Rollande
    • 3
  • André Maurin
    • 3
  • Jean-Pierre Perthuisot
    • 4
  1. 1.Faculté des SciencesUniversité d'AngersAngers cedex
  2. 2.Service of Microbiogeology of the Laboratory of BiogeologyUniversity of Nantes
  3. 3.TOTAL Compagnie Française des PétrolesParis la Défense
  4. 4.Laboratory of Biogeology, Faculté des SciencesUniversité de NantesNantes cedex 03

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