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2022
- handle: 10670/1.32i9ro
- isbn: 978-989-54493-8-5
- hal: hal-03866990
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Knowledge--Philosophy Chemistry Funeral and memorial services Biography--Last years and death Last illness Burial Interment Funeral Biography--Death and burial Prehistoric antiquities Prehistory Prehistoric archaeology Energy dispersive x-ray spectroscopy X-ray emission spectroscopy X-ray fluorescence analysis Fluorescent x-ray spectroscopy Emission spectroscopy, X-ray Excitation analysis, Fluorescent Fluorescence analysis, X-ray Fluorescent excitation analysis Social theory Natural science Sciences Science of science Service of process Service of papers Abuse of process Process Mental philosophy Museums--Technique Museology Early man Prehistoric human beings Cavemen (Prehistoric peoples) Prehistoric humans Man, Prehistoric Prehistory Prehistoric archaeology Supposition Assumption Donations Presents Cultural sociology Culture--Social aspects Sociology of culture Graves Burial customs Interment Burying-groundsCiter ce document
Teresa Palomar et al., « Shattered Glass – An Unusual Alteration Process in a 5th-Century BCE Archaeological Glass », HAL-SHS : histoire, ID : 10670/1.32i9ro
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This study presents a very unusual type of deterioration in an archaeological glass object: glass shattering. The glass objects studied were recovered from the Casas del Turuñuelo archaeological site in Guareña, Spain, which dates to the 5 th century BCE. Two translucent bowls presented typical types of degradation from burial, while a third was completely shattered. Fragments from one reconstructed bowl and the shattered object were studied and compared using stereomicroscopy, scanning electron microscopy with energy dispersive X-ray spectroscopy, Vickers hardness test, and polariscopy. While the chemical compositions of the objects are the same, their mechanical properties differ. The shattered glass comprises several fissures, with and without alteration, as well as severely stressed areas with varying hardness, confirming the modification of the glass matrix. Our hypothesis is that a post-production fire heated the now-shattered object and cold air quickly lowered the temperature, resulting in internal tensions in the glass.