Namdar, D; Verri, G; Stacey, RJ; Middleton, A; Simpson, SJ; (2011) A New Application of Fiber-Optic Reflection Spectroscopy (FORS): Characterization of Low-Temperature Alteration of Chlorite Schist and Implications for Understanding Ancient Stone Cooking Vessels. APPL SPECTROSC , 65 (1) 43 - 51. 10.1366/10-05996.
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Bulk thermal alterations to chlorite schist occurring at temperatures above 450 degrees C are traditionally studied using X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, or thermogravimetric analysis (TGA), but lower temperature changes that lead to structural and chemical alteration, including changes in oxidation state that are not followed by a crystalline modification, are not detectable using these techniques. In this paper we present the results of the first study to examine the application of fiber-optic reflection spectroscopy (FORS) for the detection and quantification of low-temperature thermal alterations in chlorite schist. Such changes have been observed during research on the thermal behavior of medieval (12th-13th centuries AD) chlorite cooking pots from the archaeological site of Merv, Turkmenistan. FORS was used to investigate these changes, testing the archaeological samples against a model data set of experimental reference specimens. The results demonstrate the potential of FORS for tracking low-temperature thermal alterations and offer the opportunity to examine temperatures attained by ancient chlorite vessels during their past: use in cooking activities.
|Title:||A New Application of Fiber-Optic Reflection Spectroscopy (FORS): Characterization of Low-Temperature Alteration of Chlorite Schist and Implications for Understanding Ancient Stone Cooking Vessels|
|Keywords:||Fiber-optic reflection spectroscopy, FORS, Fourier transform infrared spectroscopy, FT-IR spectroscopy, X-ray diffraction, XRD, Chlorite, Thermogravimetric analysis, TGA, Archaeology, Cooking, Heritage conservation, LONG-CHAIN KETONES, POTTERY VESSELS, GROUP MINERALS, ACYL LIPIDS, CALORIMETRY, PYROLYSIS|
|UCL classification:||UCL > School of BEAMS > Faculty of the Built Environment > Bartlett School > Bartlett School of Graduate Studies|
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