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Geochemistry of the Fejej Tuffs (South Omo, Ethiopia), their Tephrostratigraphical Correlation with Plio-Pleistocene Formations in the Omo-Turkana Basin.(Report)

Chapon, Cécile ; Bahain, Jean-Jacques ; Beyene, Yonas ; Bilcot, Jean-Baptiste ; Guy, Christophe ; Jullien, Michel ; de Lumley, Henry ; Provitina, Olivier;

Comptes rendus - Palevol, May-June, 2011, Vol.10(4), p.251(8) [Periódico revisado por pares]

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  • Título:
    Geochemistry of the Fejej Tuffs (South Omo, Ethiopia), their Tephrostratigraphical Correlation with Plio-Pleistocene Formations in the Omo-Turkana Basin.(Report)
  • Autor: Chapon, Cécile ; Bahain, Jean-Jacques ; Beyene, Yonas ; Bilcot, Jean-Baptiste ; Guy, Christophe ; Jullien, Michel ; de Lumley, Henry ; Provitina, Olivier
  • Assuntos: Volcanic Rocks ; Basins (Geology) ; X-ray Spectroscopy ; Fluorescence ; Archaeology
  • É parte de: Comptes rendus - Palevol, May-June, 2011, Vol.10(4), p.251(8)
  • Descrição: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.crpv.2011.02.006 Byline: Cecile Chapon (a), Jean-Jacques Bahain (b), Yonas Beyene (c), Jean-Baptiste Bilcot (d), Christophe Guy (d), Michel Jullien (e), Henry de Lumley (f), Olivier Provitina (d) Keywords: Tephrostratigraphy; Ethiopia; Omo-Turkana Basin; Plio-Pleistocene; Volcano-sedimentary formations; Glass shards; X ray fluorescence Abstract: The FJ-1 Tuff and three additional isolated outcrops of volcanic tuffs listed in the Fejej area (South Omo, Ethiopia) are associated with a single volcanic event and correspond to the same ash deposit subsequently truncated by erosion. Data from new chemical analyses given by X-ray fluorescence allow correlation of these tuffs with the Borana Tuff of the Koobi Fora Formation, which is itself correlated with a tuff in the Upper G member or with the H-1 tuff of the Shungura formation. The geochronological assessment of this tephra is in agreement with previous magnetostratigraphical and biostratigraphical studies, attributing the Fejej FJ-1 Tuff to between 1.95 to 1.90Ma. Author Affiliation: (a) Centre europeen de recherches prehistoriques, avenue Leon-Jean-Gregory, 66720 Tautavel, France (b) UMR 7194 du CNRS, departement de prehistoire, Museum national d'histoire naturelle, 1, rue Rene Panhard, 75013 Paris, France (c) Department of Archeology and Anthropology, C.R.C.C.H., Ministry of Information and Culture, P.O. Box 1907, Addis Abeba, Ethiopia (d) Laboratoire d'analyses radiochimique et chimique, commissariat a l'energie atomique de Cadarache, bAcentstiment 152, 13108 Saint-Paul lez Durance, France (e) Laboratoire de Modelisation des Transferts dans l'Environnement, centre de Cadarache du commissariat a l'energie atomique, bAcentstiment 307, 13108 Saint-Paul lez Durance, France (f) Institut de paleontologie humaine, 1, rue Rene-Panhard, 75013 Paris, France Article History: Received 9 September 2009; Accepted 15 February 2011
  • Idioma: English

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