Updated Izu sample geochemical analysis compilation

This dataset is an updated version of Gill, 2019 (https://doi.org/10.1594/IEDA/111181). It contains published and previously unpublished XRF and ICP-MS analyses from the University California Santa Cruz (UCSC) for rock samples dredged from, and mostly behind, the Izu (Japan) volcanic front from 30° to 31°N, or from and behind Torishima to Aogashima. Most were dredged using the R/V Moana Wave in 1995. Additional data for samples from these dredges are provided in publications by Ishizuka, Machida, and Haragichi. A new distinction is made between Rift- and Rear Arc Seamount Chain-types. It relies on trace element and isotope geochemistry and supersedes the distinction between Active Rifts, Back Arc Knolls, and Western Seamounts. Samples are being archived at The University of Rhode Island- Graduate School of Oceanography. They will be available to anyone by application to URI (Kelley Group http://www.gso.uri.edu/kelley/Welcome.html).

本数据集是Gill于2019年发布的数据集（https://doi.org/10.1594/IEDA/111181）的更新版本。它包含加州大学圣克鲁兹分校（UCSC）对岩石样本的已发表及未发表的X射线荧光光谱法（XRF）和电感耦合等离子体质谱法（ICP-MS）分析数据，这些样本采自北纬30°至31°之间的日本伊豆火山前缘及其后方区域（即鸟岛至青岛一线及其后方）。大多数样本由R/V Moana Wave号科考船于1995年通过拖网采样获取。这些拖网样本的补充数据可参见Ishizuka、Machida及Haragichi等人的已发表文献。本数据集对裂谷型与弧后海山链型（Rift- and Rear Arc Seamount Chain-types）作出了新的区分，该区分基于微量元素和同位素地球化学特征，取代了此前对活动裂谷、弧后丘及西部海山的分类方式。样本现存档于罗德岛大学海洋研究生院。任何人均可通过向罗德岛大学（URI）Kelley研究组申请获取样本（网址：http://www.gso.uri.edu/kelley/Welcome.html）。