Data for: K isotope behavior in topsoil from the southeastern margin of the Ti-betan Plateau

K isotope data for the manuscript entitled "K isotope behavior in topsoil from the southeastern margin of the Tibetan Plateau" to be published in Geochimica et Cosmochimica Acta. The SupplementaryData.xlsx file contains three tables: K isotope ratios, elemental results, and XRD results for the study region. The SupplementaryFigure.docx file contains a figure showing the elemental concentrations of K, Na, Mg, Fe, Al, and Ti in the study area.本数据集为即将发表于《地球化学与宇宙化学学报（Geochimica et Cosmochimica Acta）》、题为《青藏高原东南缘表土中的钾同位素行为》的论文配套的钾同位素（K isotope）数据。SupplementaryData.xlsx 文件包含三张数据表，分别对应本研究区域的钾同位素比值、元素分析结果以及X射线衍射（XRD）测试结果。SupplementaryFigure.docx 文件包含一幅图表，展示了本研究区域内钾（K）、钠（Na）、镁（Mg）、铁（Fe）、铝（Al）及钛（Ti）的元素浓度。