Volcanological and Petrological measurements on Mt. Early and Sheridan Bluff volcanoes, upper Scott Glacier, Antarctica

Mt. Early and Sheridan Bluff (87°S) are the above ice expression of Earth’s southernmost volcanic field that lies approximately 300 km from the South Pole. The dataset supplies the locations and lithological descriptions of the units that the samples were collected from for dating and petrological study. Fundamental compositional information on the mafic volcanic rock samples include whole rock MgO concentrations (wt.%), the forsterite content of olivine and the oxygen isotopic composition of olivine. The dataset also provides a record of what samples have been analyzed for major and trace elements by XRF and ICP-MS, mineral chemistry by EMPA, radiogenic isotopes of Sr, Nd and Pb on whole rock powders by ICP-MS and dating by 40Ar/39Ar method.埃特利山（Mt. Early）与谢里登崖（Sheridan Bluff，南纬87°）是地球最南端火山场露出冰面的部分，该火山场距南极点约300公里。本数据集提供了用于定年与岩石学研究的采样单元的位置信息与岩性描述。基性火山岩样品的基础组分信息包括全岩MgO含量（质量百分比，wt.%）、橄榄石的镁橄榄石组分含量以及橄榄石的氧同位素组成。本数据集还记录了已开展分析的各类样品相关信息：涵盖通过X射线荧光光谱法（XRF）与电感耦合等离子体质谱法（ICP-MS）完成主量与微量元素测试的样品、通过电子探针显微分析（EMPA）获取矿物化学组成数据的样品、通过电感耦合等离子体质谱法（ICP-MS）测定全岩粉末中Sr、Nd、Pb放射性同位素组成的样品，以及采用40Ar/39Ar法完成定年的样品记录。