Major and selected trace elements for ancient glacial diamictites

These data are whole-rock major and trace element measurements for ancient glacial diamictites from the Paleozoic, Neoproterozoic, Paleoproterozoic, and Mesoarchean. They show systematic changes in transition metals that can be attributable to two affects: 1) gradual evolution of the average composition of the upper continental crust towards a more evolved composition; and 2) loss of redox sensitive elements from the continental crust and transfer to the oceans due to increasing levels of oxidative weathering as atmospheric oxygen levels rose.

本数据集涵盖古生代、新元古代、古元古代及中太古代的古老冰川杂砾岩的全岩主量与微量元素测试数据。数据显示过渡金属元素存在系统性变化，该变化可归因于两种效应：1）上地壳平均组成向更演化的成分逐渐演化；2）随着大气氧含量升高，氧化风化作用增强，导致大陆地壳中的氧化还原敏感元素流失并向海洋迁移。