Heating mollusc shells - A radiocarbon and microstructure perspective from archaeological shells recovered from Kalba, Sharjah Emirate, UAE

Heating mollusc shells - A radiocarbon and microstructure perspective from archaeological shells recovered from Kalba, Sharjah Emirate, UAE
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加热软体动物贝壳 - 从阿联酋沙迦酋长国卡尔巴考古贝壳中发现的放射性碳和微观结构视角

DOI:
10.1016/j.jasrep.2018.08.041
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发表时间:
2018
期刊:
Journal of Archaeological Science: Reports
影响因子:
--
通讯作者:
Hinderer
Hinderer
中科院分区:
--
文献类型:
--
作者:
Lindauer;Milano;Steinhof;Hinderer

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本出版物旨在阐明人类活动期间软体动物壳的事先加热(燃烧)可能对放射性碳定年结果的影响。我们比较了在阿拉伯联合酋长国(UAE)沙迦酋长国卡尔巴(Kalba)新石器时代和青铜时代考古背景下发现的anadara uropigimelanana和terebralia palustria加热和未加热贝壳的地球化学和矿物学组成。我们的研究考察了壳的加热是否会影响储层效应的测定,或者尽管加热,这种材料是否仍然是精确测量14c的可行材料。我们的研究结果表明,尽管贝壳的矿物成分从文石变为方解石,但加热和未加热的a .uropigimelana和t .palustris的壳都提供了一致的结果。我们的结果很重要,因为我们选择的一些壳最初似乎没有被加热过。在切割贝壳时,加热过程通常会被检测为灰色的大理石状结构。作为这项工作的结果,我们也对在阿拉伯收集的贝壳的史前烹饪方法有了深入的了解。我们的研究结果为考古学家和相关研究人员在研究可能被加热的贝壳时评估放射性碳定年的结果提供了信心。
This publication aims to shed light on the influence that prior heating (burning) of mollusc shells during human activity may have on the results of radiocarbon dating. We compare the geochemical and mineralogical composition of heated and unheated shells ofAnadara uropigimelanaandTerebralia palustrisrecovered from Neolithic and Bronze Age archaeological contexts at Kalba, Sharjah Emirate, in the United Arab Emirates (UAE). Our research examined whether the heating of shells impacts on the determination of reservoir effects, or whether in spite of heating, this material remains a viable material for precise14C measurements. Our results show that both heated and non-heated shells ofA.uropigimelanaandT.palustrisprovide consistent results, although the mineral composition of the shells changes from aragonite to calcite. Our results are important, since some of our selection of shells did not initially appear to have been heated. A heating process will then usually be detected as a greyish, marble like structure when cutting the shells. As a result of this work, we have also developed insights into prehistoric cooking practices of shells collected in Arabia. Our results provide archaeologists and associated researchers with confidence when assessing the results of radiocarbon dating during their studies of shells that might have been heated.
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