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High-resolution U-series dates from the Sima de los Huesos hominids yields 600þN-66 kyrs: implications for the evolution of the early Neanderthal lineage

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Bischoff, James L. y Williams, Ross W. y Rosenbauer, Robert J. y Aramburu Artano, Arantza y Arsuaga, Juan Luis y García García, Nuria y Cuenca Bescós, Gloria (2007) High-resolution U-series dates from the Sima de los Huesos hominids yields 600þN-66 kyrs: implications for the evolution of the early Neanderthal lineage. Journal of archaeological science, 34 . pp. 763-770. ISSN 0305-4403

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URL Oficial: http://www.journals.elsevier.com/journal-of-archaeological-science/



Resumen

The Sima de los Huesos site of the Atapuerca complex near Burgos, Spain contains the skeletal remains of at least 28 individuals in a mudbreccia
underlying an accumulation of the Middle Pleistocene cave bear (Ursus deningeri). We report here on new high-precision dates on the
recently discovered speleothem SRA-3 overlaying human bones within the Sima de los Huesos. Earlier analyses of this speleothem by TIMS
(thermal-ionization mass-spectrometry) showed the lower part to be indistinguishable from internal isotopic equilibrium at the precision of the
TIMS instrumentation used, yielding minimum age of 350 kyr (kyr¼ 103 yr before present). Reanalysis of six samples of SRA-3 by inductivelycoupled
plasma-multicollector mass-spectrometry (ICP-MS) produced high-precision analytical results allowing calculation of finite dates. The
new dates cluster around 600 kyr. A conservative conclusion takes the lower error limit ages as the minimum age of the speleothem, or 530 kyr.
This places the SH hominids at the very beginnings of the Neandertal evolutionary lineage.


Tipo de documento:Artículo
Palabras clave:Atapuerca; Sima de los Huesos; Middle Pleistocene; Neandertal; Uranium-series
Materias:Ciencias > Geología > Paleontología
Código ID:27926
Depositado:14 Ene 2015 13:40
Última Modificación:11 Dic 2018 08:42

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