X-Ray fluorescence (XRF) of discrete samples from IODP Hole 386-M0092D@en

Results of X-Ray fluorescence (XRF) on discrete samples from the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). The offshore phase of this expedition took place between 2021-04-13 and 2021-06-01 onboard Japanese R/V Kaimei from and to Yokosuka, Japan, followed by an onshore phase onboard D/V Chikyu between 2022-02-14 – 2022-03-15. During the onshore phase a set of solid-phase samples, with a volume of approx. 10 cubic centimeters each, were taken with the purpose to be later on split into aliquots for the following three analyses: X-ray diffraction, carbon and X-ray fluorescence. The bulk solid-phase samples were taken from the work halves of core sections at about one sample per meter on average. Unprocessed samples were then shipped to the MARUM - Center for Marine Environmental Sciences of the University of Bremen (Germany), where they were freeze-dried, ground and homogenized to a fine powder by ECORD Science Operator staff using a pestle and an agate mortar. For analysis of elemental composition of the bulk sediment using energy dispersive XRF (EDXRF) 4 g (±0.2 g) aliquot of the homogenized powder was used. Elemental concentrations were determined by ED-XRF spectroscopy utilizing a PANalytical Epsilon 3-XLE benchtop ED-XRF spectrometer operated in the MARUM sediment geochemistry laboratory. […]本数据集为国际大洋发现计划（International Ocean Discovery Program, IODP）386航次（日本海沟古地震学）指定钻孔的离散样品X射线荧光（X-ray fluorescence, XRF）测试结果。 该航次海上作业阶段于2021年4月13日至2021年6月1日期间开展，搭载作业船为日本R/V Kaimei（海明号），往返航次始于并终于日本横须贺港；后续陆上作业阶段于2022年2月14日至2022年3月15日在D/V Chikyu（地球号）钻探船上完成。 陆上作业阶段采集了一批固相样品，单个体积约为10立方厘米，后续将其分装为子样，用于以下三项分析：X射线衍射、碳组分分析及X射线荧光分析。批量固相样品取自岩心剖面的工作半段，平均采样密度约为每1米1个样品。 未处理的原始样品被送往德国不来梅大学海洋环境科学中心（MARUM），由ECORD科学运营团队成员使用研钵与玛瑙研杵完成冷冻干燥、研磨及均质化处理，制成细粉。 为采用能量色散X射线荧光（energy dispersive XRF, EDXRF）分析全岩沉积物的元素组成，称取4克（±0.2克）均质粉末子样开展测试。元素浓度通过ED-XRF光谱法测定，测试在MARUM沉积物地球化学实验室中使用帕纳科（PANalytical）Epsilon 3-XLE台式ED-XRF光谱仪完成。 […]