A total of 47 pottery fragments were unearthed in Hachijojima Island, part of the Izu Islands (Tokyo, Japan). Among these samples, 36 found in the Kurawa site had designs resembling pottery dating back to the Jomon period (14,000–300 BC) distributed throughout Japan's main island, Honshu; five samples from the Jomon period found in the Yubama site were “undesigned”; the rest, found in the Yaene site, were undesigned Haji pottery samples dating back to the beginning of the late Kofun period (490–549 AD). X‐ray fluorescence spectrometry (XRF) was used to determine the chemical composition (in terms of 10 major oxides and 12 minor elements) of the samples to identify their provenance, that is, local versus nonlocal. For this purpose, a portion of each pottery fragment was processed to obtain a glass bead specimen. The pottery samples were classified by multivariate statistical approaches, including principal component analysis and cluster analysis, on the basis of their chemical composition. Additionally, the XRF results were compared to geochemical data from Hachijojima Island using scatter diagrams. The data thus collected allowed the provenance of the pottery samples to be inferred. In particular, the 36 samples from the Kurawa site were concluded to have been brought to Hachijojima Island from Honshu in prehistoric times, whereas the other samples were concluded to have been manufactured locally.

中文翻译：

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使用X射线荧光光谱法鉴定伊豆群岛（日本东京）的八丈岛的古代陶器

在伊豆群岛（日本东京）的八丈岛出土了总共47个陶器碎片。在这些样本中，在Kurawa遗址中发现的36个样本具有类似于陶器的设计，其历史可追溯到绳文时代（公元前14,000-300年），分布于日本主岛本州。在尤巴马遗址发现的绳纹时期的五个样本是“未经设计的”；其余的在Yaene遗址发现，是未经设计的Haji陶器样品，可追溯到Kofun晚期（公元490-549年）开始。X射线荧光光谱法（XRF）用于确定样品的化学成分（以10种主要氧化物和12种次要元素表示），以鉴定其来源，即局部与非局部。为此，对每个陶器碎片的一部分进行处理以获得玻璃珠标本。根据陶器样品的化学成分，采用多元统计方法对其进行分类，包括主成分分析和聚类分析。此外，使用散点图将XRF结果与八丈岛的地球化学数据进行了比较。如此收集的数据使得可以推断出陶器样品的来源。特别是，仓拉瓦遗址的36个样品被认为是在史前时期从本州带到八丈岛的，而其他样品则被认为是在当地制造的。这样收集的数据使得可以推断出陶器样品的来源。特别是，仓拉瓦遗址的36个样品被认为是在史前时期从本州带到八丈岛的，而其他样品则被认为是在当地制造的。这样收集的数据使得可以推断出陶器样品的来源。特别是，仓拉瓦遗址的36个样品被认为是在史前时期从本州带到八丈岛的，而其他样品则被认为是在当地制造的。