Reassessing the age of Atapuerca-TD6 (Spain): new paleomagnetic results |
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| Authors: | JM Parés L Arnold M Duval M Demuro A Pérez-González JM Bermúdez de Castro E Carbonell JL Arsuaga |
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| Institution: | 1. Research Center for Human Evolution (CENIEH), Paseo Sierra de Atapuerca s/n, 09002 Burgos, Spain;2. Institut de Paleoecologia Humana i Evolució Social, Àrea de Prehistòria, U. Rovira i Virgili, Plaça Imperial Tarraco 1, E-43005 Tarragona, Spain;3. Centro de Investigación (UCM-ISCIII) de Evolución y Comportamiento Humanos, Monforte de Lemos 3-5 (Pabellón 14), 28029 Madrid, Spain |
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| Abstract: | We carry out a new paleomagnetic study across stratigraphic layer TD7 of Gran Dolina Site, Atapuerca, and reassess the existing absolute ages (thermoluminescence, electron spin resonance) obtained at this site. The new and more detailed magnetostratigraphic record of the Matuyama-Brunhes boundary, combined with absolute ages, enables further constraint on the age of the underlying human-bearing level or Aurora Stratum. Paleomagnetism of the studied silts and sandstones reveals stable, dual polarity Characteristic Remanent Magnetization directions. A new normal magnetic polarity short interval is found at several consecutive sampling localities in the upper part of TD7, providing a new ante quem date for the human-bearing sediments of 0.9 Ma, possibly formed during MIS 25. |
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| Keywords: | Atapuerca Gran Dolina TD6 Hominins Geochronology Paleomagnetism |
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