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
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
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Ra’s Al-Hamra 6（阿曼苏丹国马斯喀特）陶瓷壳中部的放射性碳年表修订版：对职业顺序、海洋水库年龄和人类流动性的影响
DOI：
10.1017/rdc.2016.3
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发表时间：
2016
期刊：
影响因子：
8.3
通讯作者：
L. G. Marcucci
中科院分区：
文献类型：
--
作者：
A. Zazzo;O. Munoz;E. Badel;Irène Béguier;F. Genchi;L. G. Marcucci
Ra‘s al-Hamra 6(RH-6)是阿拉伯半岛东部沿海最早的分层考古遗址之一。这一贝壳中期是放射性碳测年至公元前6-5千年，但大多数测年是在加速器质谱仪(AMS)14C测年到来之前获得的，存在很大的不确定性。此外，大多数这些数据是从海洋和红树林贝壳上获得的，需要对全球平均海洋14C水库年龄(MRA)的局部差异进行修正。事实证明，这很困难，因为该地区在这一时期没有达成共识的价值。最近在RH-6进行的挖掘提供了重新确定这一重要遗址的年代的机会，以便准确地确定其占领历史和后来作为墓地的用途，并确定这一时期的海洋水库效应。选择了38个木炭、贝壳和人骨磷灰石样品进行14C测年。贝叶斯对14C年代的模拟表明，贝壳中期的形成跨越了约1000年，介于公元前6世纪中期和公元前5世纪中期之间。在整个序列中计算的ΔR值为正且一致，范围从99±27到207±43 14Cyr。在公元前四千年之初，RH-6被用作墓地，正如14C测年所表明的那样，一枚贝壳与埋在遗址表面的个人有严格的联系。人类骨磷灰石的14C测年使我们可以计算出这个人89%的饮食来自海洋资源。这一发现证实了先前的观察结果，即在动物群和木炭组合中存在压倒性的海洋和红树林物种，并暗示在公元前4千年期间，这些物种的流动性较低，或仅限于沿海地区。
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.