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Updated: Jun 21, 2026

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Preparation of Authigenic Pyrite from Methane-bearing Sediments for In Situ Sulfur Isotope Analysis Using SIMS
Published on: August 31, 2017
Las series de uranio fechadas en carbonatos autígenos y sitios acheulianos en el sur de Egipto
Resumen
Artefactos acheulianos encontrados en Egipto.
Área de la Ciencia:
- La paleoantropología es la paleoantropología.
- Geocronología Geocronología.
- Geología Cuaternaria Geología Cuaternaria
Sus antecedentes:
- Los artefactos acheules son herramientas de piedra asociadas con los primeros antepasados humanos.
- El entorno hiperárido del sur de Egipto plantea desafíos para la preservación de la evidencia antigua.
- Los Paleovalleys ofrecen refugios potenciales para el asentamiento humano pasado.
Objetivo del estudio:
- Para investigar la ocupación humana temprana en los paleovalles del sur de Egipto.
- Para establecer un marco cronológico para la deposición de artefactos acheulianos.
- Para correlacionar la presencia de artefactos con las condiciones paleoclimáticas.
Principales métodos:
- Investigaciones de campo en Wadi Arid y Wadi Safsaf.
- Identificación de artefactos en depósitos de carbonato autogénico.
- Serie de uranio para la datación de 25 muestras de carbonato.
Principales resultados:
- Los artefactos acheules fueron encontrados in situ dentro del aluvión cementado con CaCO3).
- La datación por series de uranio reveló deposiciones de carbonato en aproximadamente 45, 141 y 212 ka.
- Se determinó una edad mínima de 212 ka para la ocupación acheulense en los paleovalles.
Conclusiones:
- Las extensas deposiciones de carbonato sugieren que en el pasado hubo episodios de clima húmedo.
- Estos períodos húmedos probablemente facilitaron el asentamiento humano en la región.
- Los hallazgos retrasan la línea de tiempo para la presencia humana temprana en esta parte de Egipto.
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