Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12136/1326
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Title: Paleomagnetic studies in the northern margin of the Aïn Beni Mathar-Guefait basin (High Plaetaus, Morocco)
Authors: Álvarez-Posada, Claudia
Parés, Josep María
Carrancho Alonso, Ángel
Villalaín, Juan José
Aouraghe, Hassan
Haddoumi, Hamid
El-Hammouti, Kamal
El-Harradji, Abderrahmane
Sala, Robert
Chacón Navarro, María Gema
Issue Date: 2015
Publisher: CENIEH
Citation: II Meeting of African Prehistory, 2015, p. 17
Abstract: Dating Pleistocene occupations in the circum-Mediterranean region plays a key role in the study of human evolution, as is critical to establish an accurate time framework for better understanding ho, when, and why the first human expansions occurred outside the African continent. The chronology of Lower Paleolithic archaeological sites in Morocco, such as those in the basin of Aïn Beni Mathar is critical to contextualize old human migrations in Northern Africa. Sediments and terraces in the area of Aïn Beni Mathar, in the High Plateau, contain remains of both Acheulian (Mode II) and Oldowan (Mode I) stone tools, and have been studied in successive field expeditions since 2006. In an attempt to provide an initial chronological context for these archaeological sites in northern Morocco, we have collected samples from two different yet related areas within the basin for paleomagnetic dating. A succession found near to the town of Aïn Beni Mathar has a thickness of about 80 m and we collected 50 samples, whereas in the vicinity of Guefait, in the same basin, a sequence of approximately 120 meters was sampled producing more than 100 specimens. Paleomagnetic analyses were carried out at both University of Burgos and CENIEH, and all samples were demagnetized by either stepwise progressive alternating field o thermal demagnetization to determine the characteristic remanent magnetization (ChRM) directions. The paleomagnetic analyses of both sequences have resulted in two local magnetic polarity stratigraphies, where both normal and reverse polarities are observed. We will discuss options as far as correlating the local magnetostratigraphies to the Geomagnetic Polarity Time Scale (GPTS) to infer age constrains for the early human presence in northern Morocco.
URI: http://hdl.handle.net/20.500.12136/1326
Type: Presentation
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Appears in Collections:Congresos, encuentros científicos y estancias de investigación



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