Magnetostratigraphic study of the Melka Kunture archaeological site (Ethiopia) and its chronological implications
| Autor: | Nicolas Thouveny, Maurice Taieb, Jean-Philip Brugal, Endale Tamrat |
|---|---|
| Přispěvatelé: | Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Collège de France (CdF)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Institut National de la Recherche Agronomique (INRA), Laboratoire méditerranéen de préhistoire Europe-Afrique (LAMPEA), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Series (stratigraphy)
Archeologia Magnetostratigraphic [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Etiopia Magnetic susceptibility Archaeology Magnetization Sequence (geology) Paleontology Earth's magnetic field Remanence [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy site Sedimentary rock The Melka Kunture Geology Magnetostratigraphy Earth-Surface Processes |
| Zdroj: | Quaternary International Quaternary International, Elsevier, 2014, 343, pp.5-16. ⟨10.1016/j.quaint.2013.11.030⟩ Quaternary International, 2014, 343, pp.5-16. ⟨10.1016/j.quaint.2013.11.030⟩ |
| ISSN: | 1040-6182 |
| DOI: | 10.1016/j.quaint.2013.11.030⟩ |
| Popis: | International audience; A magnetostratigraphy is established for the Melka Kunture archaeological site of Ethiopia, whose chronological setting needed improvement. The magnetostratigraphy is constructed from four distinct stratigraphic sections, Garba-IV (5 sites), Gombore-I (21 sites), Gombore-II (8 sites), and Simbiro (13 sites). Natural remanent magnetizations (NRM) were measured and analyzed over a total of 214 specimens to isolate the characteristic components of magnetization and determine magnetic polarities. Two magnetization components were isolated in every sample analyzed: (i) a low-temperature (low coer-civity) secondary normal component and (ii) a high-temperature characteristic component of normal or reversed polarity and allows to identify five magnetozones (N1eR1eN2eR2eN3). Rock magnetic analysis attests that the magnetization is carried by magnetite or titanomagnetite within the range of pseudo-single domain grain sizes. Anisotropy of magnetic susceptibility (AMS) supports a sedimentary origin of the magnetic remanence. Based on recent 40 Ar/ 39 Ar geochronological dating of the site, faunal constraints and a magnetostratigraphic pattern, the sequence is correlated to the time between the early Matuyama chron ( |
| Databáze: | OpenAIRE |
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