Data for Duncanson et al 2026: The upper continental crust contains more marine sediments through time: insights from nitrogen and carbon in Pleistocene tills and ancient glacial diamictites

These data are presented in the Duncanson et al., 2026 manuscript titled "The upper continental crust contains more marine sediments through time: insights from nitrogen and carbon in Pleistocene tills and ancient glacial diamictites." This dataset contains sample data for 70 Pleistocene till samples and 24 glacial diamictite composites. Sample data includes sample location information, nitrogen and carbon concentrations, stable nitrogen and carbon isotope values, major oxide element concentrations, and mineral abundances. This manuscript uses the dataset here to constrain nitrogen and carbon concentrations, and carbon and nitrogen isotopes, of glacial sediments as a proxy for the upper continental crust.

本数据集收录于Duncanson等人2026年的手稿，该手稿标题为《上地壳随时间演化富集海相沉积物：更新世冰碛物与古冰成杂砾岩中的氮碳特征启示》。本数据集包含70件更新世冰碛物（Pleistocene till）样品与24件冰成杂砾岩（glacial diamictite）组合样品的分析数据。样品数据涵盖采样点位信息、氮与碳浓度、稳定氮与碳同位素比值、主量氧化物元素浓度以及矿物丰度。该手稿依托本数据集，以冰成沉积物的氮、碳浓度及碳、氮同位素作为上地壳的替代指标，对其地球化学特征进行约束限定。