Application of computed tomography in the analysis of glass beads unearthed in Shanpula cemetery (Khotan), Xinjiang Uyghur Autonomous Region
Application of computed tomography in the analysis of glass beads unearthed in Shanpula cemetery (Khotan), Xinjiang Uyghur Autonomous Region
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DOI：
10.1007/s12520-017-0582-6
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发表时间：
2019-03-01
影响因子：
2.2
通讯作者：
Fu, Ya'nan
中科院分区：
文献类型：
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作者：
Cheng, Qian;Zhang, Xueyan;Fu, Ya'nan
在丝绸之路沿着遗址出土的玻璃珠，通常象征着不同地区之间的艺术、商业和文化交流。玻璃珠的生产过程也意味着相关的当地文化及其来源。计算机断层扫描（CT）是一种无损的三维检测方法，已广泛应用于各类文物的研究。它有助于发现和记录工件的制造过程。根据新疆和田出土的两个玻璃珠的CT图像，研究了玻璃珠的内部结构和气泡形态。本文展示了CT技术如何有助于研究考古玻璃珠的制造。通过CT扫描技术分析两个多色珠。基于激光烧蚀电感耦合等离子体原子发射光谱法（LA-ICP-AES）分析的化学成分，珠S-2是典型的泡碱玻璃，珠SC-8是钠钙硅玻璃。根据计算机断层扫描分析，多孔的核心覆盖着一层厚厚的釉。S-2眼珠的眼部分可能是通过包埋技术制成的，这一点通过气泡和眼睛的三维形状得到了证明。SC-8珠通过拉伸技术制造，这通过椭圆形气泡得到证明。缠绕在玻璃底座上的黄色条纹在横截面上呈现出锋利的边缘，这似乎反映了填充过程之前雕刻的凹槽。
The glass beads unearthed in sites along the Silk Road usually indicate the communications of arts, business, and cultures between different areas. The production process of glass beads also implies an associated local culture, as well as its provenance. Computed tomography (CT) is a non-destructive three-dimensional method and it has been widely used in the research of various relics. It contributes to discovering and documenting the manufacturing processes for artifacts. Based on the CT images of two glass beads which were unearthed in Khotan, Xinjiang, China, the inner structure and air bubble shapes were investigated. This paper demonstrates how the CT technology contributes to studying the manufacture of archaeological glass beads. Two polychrome beads were analyzed by CT scanning techniques. Bead S-2 is a typical natron glass and bead SC-8 is a soda-lime-silica glass, based on the chemical components analyzed by laser ablation inductively coupled plasma atomic emission spectrometry (LA-ICP-AES). According to computed tomographic analysis, a porous core was covered with a thick layer of glaze. The eye parts from S-2 eye bead were probably made by an embedding technique, which was proved by the 3D shapes of bubbles and the eyes. The SC-8 bead was manufactured by a stretching technique which was evidenced by the elliptical bubbles. The yellow stripes wrapped around the glass base present sharp edges in cross section, which seem to reflect grooves carved before the filling process.