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Sedimentary records in the middle valley of the Bao Bolon River (Senegal). First Holocene chronostratigraphic outline.

Abstract : In West Africa, the determination of chronostratigraphic sequences from fluvial sedimentary records is a crucial issue in the study of Holocene continental palaeoenvironments. The results presented in this first study, carried out in the middle valley of the Bao Bolon River, a tributary of the Gambia River in Senegal, attest to high-quality sedimentary records. At the watershed scale, continuities and discontinuities are interpreted as aggradation and erosion phases. Eight chronostratigraphic units have been defined, which document in particular the second half of the Holocene. The last two units cover the terminal part of the Holocene, and provide a relatively detailed description of the period contemporary of the archaeological megalithic sites, listed with the World Heritage list of UNESCO, as well as the strong anthropization phase of the past decades.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-02289883
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Submitted on : Tuesday, September 17, 2019 - 11:04:55 AM
Last modification on : Friday, September 18, 2020 - 2:34:34 PM

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Mathilde Stern, Aziz Ballouche, Emmanuel Weisskopf, David Landry, Hamady Bocoum, et al.. Sedimentary records in the middle valley of the Bao Bolon River (Senegal). First Holocene chronostratigraphic outline.. Quaternaire, Centre National de la Recherche Scientifique, 2019, 30 (2), pp.117-132. ⟨10.4000/quaternaire.11679⟩. ⟨hal-02289883⟩

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