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<p>Turquoise-inlaid composite ornaments are commonly found in Late Neolithic and Bronze Age China. However, the methods used to affix small turquoise pieces to prehistoric ornaments remain unclear. In this study, archaeological adhesive samples from turquoise-inlaid wrist ornaments found at the Taosi site, Shanxi Province, north China, during 2300 − 1900 BCE, were characterized by using FTIR and Py-GC/MS analysis. Through comparing the chemical compositions of archaeological materials and modern samples, the adhesive was identified as birch bark tar, which is reported for the first time in China. Moreover, it is also suggested that the wide use of turquoise inlaying technology in north China may be linked to the production of birch bark tar. This research has combined chemical analytical technologies with archaeological background information to reconstruct the technological development and material innovation in ornamental manufacturing of early societies in ancient China.</p>

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Identification of adhesives on turquoise-inlaid wrist ornaments at the Taosi site during the Late Neolithic China

  • 期刊论文

  • 发表日期：

    2026年2月17日

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  • Huiting Gao,
  • Jiangtao Gao,
  • Bin Han,
  • Yimin Yang

摘要

Turquoise-inlaid composite ornaments are commonly found in Late Neolithic and Bronze Age China. However, the methods used to affix small turquoise pieces to prehistoric ornaments remain unclear. In this study, archaeological adhesive samples from turquoise-inlaid wrist ornaments found at the Taosi site, Shanxi Province, north China, during 2300 − 1900 BCE, were characterized by using FTIR and Py-GC/MS analysis. Through comparing the chemical compositions of archaeological materials and modern samples, the adhesive was identified as birch bark tar, which is reported for the first time in China. Moreover, it is also suggested that the wide use of turquoise inlaying technology in north China may be linked to the production of birch bark tar. This research has combined chemical analytical technologies with archaeological background information to reconstruct the technological development and material innovation in ornamental manufacturing of early societies in ancient China.