利用红外透射光谱测定黑曜石水化年代

IF 1.5 3区 地球科学 0 ARCHAEOLOGY
Archaeometry Pub Date : 2024-05-15 DOI:10.1111/arcm.12982
Fernando Franchetti, Gustavo Neme, Adolfo Gil, M. Laura Salgan, Alexander K. Rogers, James Davenport, Raven Garvey, Olga Trofimova, Thegn N. Ladefoged, Christopher M. Stevenson
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引用次数: 0

摘要

黑曜石年代测定法利用从玻璃的结构水含量预测的实验得出的扩散系数,将近表面水合层内扩散的分子水量转换为经过的时间。对透明考古样品进行的红外光谱透射测量记录了近红外区域水带的振动响应,从而可以确定结构水含量(OH)和扩散的环境水(H2O)量。在本应用中,直接测量了 5200 cm-1 处的 H2O 水带。通过评估各变量的精确度来评估该方法的准确性。使用阿根廷萨拉曼卡洞穴放射性碳年代沉积物中的黑曜石文物对新方案进行了评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Obsidian hydration dating by infrared transmission spectroscopy

Obsidian hydration dating by infrared transmission spectroscopy

The obsidian dating method converts the quantity of diffused molecular water within a near-surface hydration layer to elapsed time using an experimentally derived diffusion coefficient predicted from the structural water content of the glass. Infrared spectroscopic transmission measurements on transparent archaeological samples record vibrational responses of water bands in the near-infrared region, permitting determination of structural water content (OH), and the amount of diffused ambient water (H2O). In this application, the H2O water band at 5200 cm−1 is measured directly. The accuracy of the approach is assessed by an evaluation of the precision of each contributing variable. The new protocol is evaluated using obsidian artifacts from radiocarbon-dated deposits at Salamanca Cave in Argentina.

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来源期刊
Archaeometry
Archaeometry 地学-地球科学综合
CiteScore
3.60
自引率
12.50%
发文量
105
审稿时长
6 months
期刊介绍: Archaeometry is an international research journal covering the application of the physical and biological sciences to archaeology, anthropology and art history. Topics covered include dating methods, artifact studies, mathematical methods, remote sensing techniques, conservation science, environmental reconstruction, biological anthropology and archaeological theory. Papers are expected to have a clear archaeological, anthropological or art historical context, be of the highest scientific standards, and to present data of international relevance. The journal is published on behalf of the Research Laboratory for Archaeology and the History of Art, Oxford University, in association with Gesellschaft für Naturwissenschaftliche Archäologie, ARCHAEOMETRIE, the Society for Archaeological Sciences (SAS), and Associazione Italian di Archeometria.
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