Total carbon, total organic carbon, total inorganic carbon and total sulfur (solid-phase discrete samples) from IODP Hole 386-M0091C@en

Total carbon (TC), total organic carbon (TOC), total inorganic carbon (TIC) and total sulfur (TS) from solid-phase discrete samples of 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 TC, TOC and TS an aliquot of approx. 100 mg from each sample was measured using a CS744 LECO carbon-sulphur analyzer. TIC was determined by subtracting TOC from TC. All data are reported in weight percentage per dry sample with an analytical precision. Total nitrogen (TN, aliquot of approx. 30 mg) was analyzed with a Vario EL3 CHNS analyzer by Elementar. Because of technical issues, TN was only measured on samples from Sites M0081 and M0082. […]本数据集涵盖国际大洋发现计划（International Ocean Discovery Program, IODP）386航次（日本海沟古地震研究）指定钻孔的固相离散样品的总碳（Total Carbon, TC）、总有机碳（Total Organic Carbon, TOC）、总无机碳（Total Inorganic Carbon, TIC）及总硫（Total Sulfur, TS）数据。本航次的海上作业阶段于2021年4月13日至2021年6月1日期间在日本R/V Kaimei号科考船上开展，往返航经日本横须贺港；随后的陆上作业阶段于2022年2月14日至2022年3月15日在D/V Chikyu号科考船上完成。陆上作业阶段采集了单个体积约10立方厘米的固相样品，后续将其分装为子样以开展三项分析：X射线衍射、碳组分分析及X射线荧光光谱分析。大块固相样品取自岩芯剖面的工作半块，平均采样间距约为每米1件。未处理的原始样品被运送至德国不来梅大学海洋环境科学中心（MARUM），由ECORD科学运营团队工作人员使用玛瑙研钵和研杵将其冷冻干燥、研磨并均质为细粉。对于TC、TOC和TS，称取每份样品约100 mg的子样，使用LECO CS744碳硫分析仪进行测定。TIC通过TC减去TOC计算得到。所有数据以干样品重量百分比形式报告，并附有分析精度。总氮（Total Nitrogen, TN，称取约30 mg子样）采用Elementar公司的Vario EL3 CHNS分析仪进行分析。受技术问题影响，TN仅在M0081和M0082站位的样品中完成测定。……