Ceramic rehydroxylation dating by infrared diffuse reflectance spectroscopy

IF 2.6 1区地球科学 Q1 ANTHROPOLOGY

Journal of Archaeological Science Pub Date : 2025-02-23 DOI:10.1016/j.jas.2025.106181

Christopher M. Stevenson , Mary Gurnick , Oleksandr Misiats , David Hurst Thomas , Anna M. Semon

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引用次数: 0

Abstract

We provide a new approach to the method of ceramic dating by tracking the dehydroxylation and rehydroxylation of water species using infrared diffuse reflectance spectroscopy. Water bands at 3655 cm⁻¹ (OH/H₂O), 4550 cm⁻¹ (OH), and 5160 cm⁻¹(H₂O) were used to determine the various forms of water absorbed or released from the ceramic surface and the interior, which permitted the calculation of prehistoric hydroxyl gain since the time of manufacture. Ramped temperature rehydroxylation experiments (30–500 °C) were used to establish the activation energy (E) of OH diffusion. This was followed by an isothermal diffusion experiment, which provided a high temperature (240 °C) diffusion coefficient that was extrapolated to archaeological temperature. This new variant of the dating method is an alternative to the conventional mass gain experiments that have been applied in the past. Our ceramic dates are in agreement with associated radiocarbon dates within shell midden deposits created by the 17th century Native Americans on St. Catherines Island, Georgia, USA.

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来源期刊

Journal of Archaeological Science 地学-地球科学综合

CiteScore

6.10

自引率

7.10%

发文量

112

审稿时长

49 days

期刊介绍： The Journal of Archaeological Science is aimed at archaeologists and scientists with particular interests in advancing the development and application of scientific techniques and methodologies to all areas of archaeology. This established monthly journal publishes focus articles, original research papers and major review articles, of wide archaeological significance. The journal provides an international forum for archaeologists and scientists from widely different scientific backgrounds who share a common interest in developing and applying scientific methods to inform major debates through improving the quality and reliability of scientific information derived from archaeological research.