Total carbon, total organic carbon, and total inorganic carbon (solid-phase discrete samples) from IODP Hole 389-M0110A@en

Total carbon (TC), total organic carbon (TOC), and total inorganic carbon (TIC) content from solid-phase discrete samples from the above given hole of International Ocean Discovery Program (IODP) Expedition 389 (Hawaiian Drowned Reefs). The offshore phase of this expedition took place between 2023-08-31 and 2023-10-31 onboard multipurpose vessel MMA Valour sailing from and to Barbers Point Harbor, Hawai'i, USA, followed by the onshore phase from 2025-02-06 to 2025-02-26 at the Bremen Core Repository (BCR) hosted at MARUM – Center for Marine Environmental Sciences, University of Bremen. During the onshore phase a set of solid-phase samples were taken from the work halves of core sections, 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. Bulk samples were subsequently freeze-dried, ground and homogenized to a fine powder (<20 µm particle size) by ECORD Science Operator staff using a pestle and an agate mortar or a ball mill. Sample aliquots of approx. 100 mg (TC) and 1 g (TOC) were processed through a CS744 LECO carbon-sulfur analyzer to obtain the respective concentrations. TIC was calculated as the difference between TC and TOC. […]本数据集涵盖国际大洋发现计划（International Ocean Discovery Program, IODP）389次科考航次（夏威夷淹没礁课题）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）与总无机碳（Total Inorganic Carbon, TIC）含量数据。 本次航次分为海上与陆上两个作业阶段：海上作业时段为2023年8月31日至2023年10月31日，搭载多用途科考船MMA Valour号，往返于美国夏威夷州巴伯斯角港；陆上作业时段为2025年2月6日至2025年2月26日，作业地点为不来梅大学海洋环境科学中心（MARUM – Center for Marine Environmental Sciences）下属的不来梅岩芯库（Bremen Core Repository, BCR）。 陆上作业期间，科研人员从岩芯剖面的工作半块中采集固相样品，单份样品体积约10立方厘米，随后将其拆分为若干子样，用于以下三项分析：X射线衍射、碳组分分析及X射线荧光光谱分析。 总样品随后经冷冻干燥、研磨均质至粒径小于20微米的细粉，该流程由ECORD科学操作人员（ECORD Science Operator staff）使用研杵与玛瑙研钵或球磨机完成。 称取约100 mg（用于总碳检测）与1 g（用于总有机碳检测）的样品子样，通过LECO CS744型碳硫分析仪（CS744 LECO carbon-sulfur analyzer）完成检测，获取对应浓度数据；总无机碳浓度通过总碳与总有机碳的浓度差值计算得到。[…]