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A Revised Radiocarbon Chronology of the Aceramic Shell Midden of Ra’s Al-Hamra 6 (Muscat, Sultanate of Oman): Implication For Occupational Sequence, Marine Reservoir Age, and Human Mobility

Published online by Cambridge University Press:  10 February 2016

Antoine Zazzo*
Affiliation:
Unité Mixte de Recherche 7209 “Archéozoologie, Archéobotanique: Sociétés, Pratiques et Environnements,” Centre National de la Recherche Scientifique, Muséum national d’histoire naturelle, Sorbonne Universités, CP 56, 55 rue Buffon, F-75005 Paris, France.
Olivia Munoz
Affiliation:
Université Paris 1 Panthéon-Sorbonne, UMR 7041, Archéologie et Sciences de l’Antiquité, Equipe “du Village à l’Etat au Proche et Moyen Orient,” Maison de l’Archéologie et de l’Ethnologie, F-92023 Nanterre, France.
Emilie Badel
Affiliation:
Université Paris 1 Panthéon-Sorbonne, UMR 7041, Archéologie et Sciences de l’Antiquité, Equipe “du Village à l’Etat au Proche et Moyen Orient,” Maison de l’Archéologie et de l’Ethnologie, F-92023 Nanterre, France.
Irène Béguier
Affiliation:
Service départemental d’archéologie du Calvados, 9, rue Saint-Laurent, BP 20520, 14035 Caen, Cedex 1, France.
Francesco Genchi
Affiliation:
Università di Bari, Dipartimento dei Beni Culturali e Scienze del Linguaggio, Palazzo Ateneo, Piazza Umberto I 1, I-70125 Bari, Italy.
Lapo Gianni Marcucci
Affiliation:
Université Paris 1 Panthéon-Sorbonne, UMR 7041, Archéologie et Sciences de l’Antiquité, Equipe “du Village à l’Etat au Proche et Moyen Orient,” Maison de l’Archéologie et de l’Ethnologie, F-92023 Nanterre, France. Università di Bologna, Dipartimento di Archeologia, Piazza San Giovanni in Monte 2, 40124 Bologna, Italy.
*
*Corresponding author. Email: [email protected].

Abstract

Ra’s al-Hamra 6 (RH-6) is one of the earliest stratified archaeological sites along the eastern littoral of the Arabian Peninsula. This shell midden was radiocarbon dated to the 6th–5th millennium cal BC, but the majority of the dates were obtained before the advent of accelerator mass spectrometry (AMS) 14C dating and suffer from large uncertainties. In addition, most of these dates were obtained on marine and mangrove shells and required correction for local variations from the global average marine 14C reservoir age (MRA). This proved difficult because no consensus value exists for this period in the area. Recent excavations at RH-6 offered the opportunity to redate this important site in order to precisely determine its occupation history and later use as a graveyard, and establish the marine reservoir effect for this time period. Thirty-eight samples of charcoal, shells, and human bone apatite were selected for 14C dating. Bayesian modeling of the 14C dates suggests that the formation of the shell midden spanned ~1 millennium, between the mid-6th and the mid-5th millennium cal BC. Positive and consistent ΔR values were calculated throughout the entire sequence, ranging from 99±27 to 207±43 14C yr. At the beginning of the 4th millennium cal BC, RH-6 was used as a graveyard, as suggested by the 14C dating of a shell in strict association with an individual buried at the surface of the site. 14C dating of human bone apatite allowed us to calculate that 89% of this individual’s diet derived from marine resources. This finding confirms previous observations showing the overwhelming presence of marine and mangrove-dwelling species in the faunal and charcoal assemblage, and implies a low mobility, or mobility restricted to the coast for this population during the 4th millennium cal BC.

Type
Research Article
Copyright
© 2016 by the Arizona Board of Regents on behalf of the University of Arizona 

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