Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-26T17:24:34.919Z Has data issue: false hasContentIssue false
  • English
  • Français

Molluscan Assemblages from the Late Cenozoic of the Lower Omo Basin, Ethiopia

Published online by Cambridge University Press:  20 January 2017

Dirk Van Damme  and
Achilles Gautier
Dirk Van Damme
Affiliation:
Geologische Instituut, Rijksuniversiteit Gent, Belgium
Achilles Gautier
Affiliation:
Geologische Instituut, Rijksuniversiteit Gent, Belgium
Get access Rights & Permissions [Opens in a new window]

Abstract

The lower Omo basin, southern Ethiopia, preserves formations of sedimentary and pyroclastic rocks which span a substantial range of later Cenozoic time. These formations are often extraordinarily rich in vertebrate fossils and have also afforded a series of molluscan assemblages from contexts radiometrically dated by K/Ar or 14C. The late Cenozoic molluscan fauna has been previously ill-known in this part of Africa and these assemblages provide a broad faunal zonation for the northern sector of the Eastern Rift valley. The five principal assemblages are here treated as faunal groupings, rather than as formal faunal zones. Three groupings are recognized for the Pliocene/Pleistocene time range, one grouping for the later Pleistocene and one grouping for the subrecent and present.

Type
Research Article
Information
Quaternary Research , Volume 2 , Issue 1 , July 1972 , pp. 25 - 37
Copyright
Academic Press, Inc.

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Aambourg, C. (1943). Mission scientifique de l'Omo 1932–1933. Mémoires du Muséum national d'histoire naturelle, Paris, Fasc. 2, 60–230.Google Scholar
Arambourg, C., Chavaillon, J., and Coppens, Y. (1967). Premiers résultats de la nouvelle mission de l'Omo (1967). Comptes Rendus Académie des Sciences, Paris 265-D, 1891–1896.Google Scholar
Brown, F.H., (1969). Observations on the stratigraphy and radiometric age of the “Omo Beds”, lower Omo basin, southern Ethiopia. Quaternaria 11, 7–14.Google Scholar
Brown, F.H. (1971). Radiometric dating of sedimentary formations in the lower Omo valley, Ethiopia. In “Calibration of Hominoid Evolution.” (Bishop, W.W. and Miller, J.A. Eds.). Scottish Academic Press, Edinburgh.Google Scholar
Brown, F.H., de Heinzelin, J., and Howell, F.C. (1970). Pliocene/Pleistocene formations in the lower Omo basin, southern Ethiopia. Quaternaria 13, 247–268.Google Scholar
Brown, F.H., and Lajoie, K.R. (1971). Radiometric age determinations on Pliocene/Pleistocene formations in the lower Omo basin, Ethiopia. Nature London 229, 483–485.Google Scholar
Butzer, K.W. (1970). Contemporary depositional environments of the Omo delta. Nature London 226, 425–430.Google Scholar
Butzer, K.W. (1971). The lower Omo basin: geology, fauna and hominids of Plio-Pleistocene formations. Naturwissenschaften 58, 7–16.CrossRefGoogle ScholarPubMed
Butzer, K.W., Brown, F.H., and Thurber, D.L. (1969). Horizontal sediments of the lower Omo valley: the Kibish Formation. Quaternaria 11, 15–29.Google Scholar
Butzer, K.W., nad Thurber, D.L. (1969). Some late Cenozoic sedimentary formations of the lower Omo basin. Nature 222, 1132–1137.CrossRefGoogle Scholar
Van Damme, D. (1969). “Fossile Zoetwatermollusken van de Omorivier, Ethiopie.” Licentiaat Wetenschappen (Dierkunde), Rijksuniversiteit Gent.Google Scholar
Fuchs, V.E. (1939). The geological history of the Lake Rudolf basin, Kenya Colony. Philosophical Transactions of the Royal Society of London 229-B, 219–274.Google Scholar
Haas, F. (1936). Binnen-Mollusken aus Inner-Afrika. Abhandlung Senckenbergischen Naturforschenden Gesellschaft 431, 1–154.Google Scholar
de Heinzelin, J. (1971). Observations sur la formation de Shungura (Vallée de l'Omo, Ethiopie). Comptes Rendus Académie des Sciences, Paris 272, 2409–2411.Google Scholar
de Heinzelin, J., and Brown, F.H. (1969). Some early Pleistocene deposits of the lower Omo valley: the Usno Formation. Quaternaria 11, 31–46.Google Scholar
Howell, F.C. (1968). Omo Research Expedition. Nature London 219, 567–572.Google Scholar
Leakey, R.E.F., et al. (1970). New hominid remains and early artifacts from northern Kenya. Nature London 226, 223–230.Google Scholar
Neuville, H., and Anthony, R. (1906). Aperçu sur la faune malacologique des lacs Rudolphe, Stéphanie et Marguerite. Bulletin de la Societe Philomathique Sér de Paris 9, 8, 275–300.Google Scholar
Vondra, C.F., et al. (1971). Preliminary stratigraphical studies of the East Rudolf basin, Kenya, Nature London 231, 245–248.Google Scholar