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Holoceno medio edad del sunnyvale esqueleto humano
Science (New York, N.Y.)
|June 17, 1983
Resumen
La datación por radiocarbono revela que un esqueleto humano moderno de Sunnyvale, California, es más joven de lo que se pensaba anteriormente. Los hallazgos sugieren una edad media del Holoceno, entre 3500 y 5000 años.
Área de la Ciencia:
- La paleoantropología es la paleoantropología.
- Las citas radiométricas.
- Arqueología Arqueología.
Sus antecedentes:
- Un esqueleto humano morfológicamente moderno fue descubierto en Sunnyvale, California.
- Los intentos previos de datación utilizando la racemicidad del ácido aspártico y los isótopos de la serie de uranio arrojaron estimaciones de edad contradictorias.
Objetivo del estudio:
- Para determinar con precisión la edad del esqueleto de Sunnyvale utilizando el método de datación por carbono-14.
- Para conciliar las discrepancias en las estimaciones de edad anteriores para los restos humanos.
Principales métodos:
- Se realizaron múltiples análisis de datación por carbono-14 (14C) en fracciones orgánicas del hueso postcraneal.
- Tanto el conteo de desintegración como los métodos de conteo directo se emplearon para la determinación del 14C.
Principales resultados:
- Cuatro determinaciones independientes de 14C indicaron consistentemente una edad del Holoceno medio para el esqueleto.
- El rango de edad estimado es de aproximadamente 3500 a 5000 años de carbono-14 antes del presente.
- Esta datación revisada se alinea con los datos geológicos, arqueológicos y antropométricos.
Conclusiones:
- La datación por carbono-14 proporciona una evaluación de la edad más confiable para el esqueleto de Sunnyvale.
- El esqueleto es significativamente más joven de lo que sugieren las técnicas de datación anteriores.
- Los hallazgos apoyan un contexto del Holoceno medio para el entierro.
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