Smear slide descriptions of IODP Hole 386-M0093A

Descriptions of smear slides 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. This was followed by an onshore phase onboard D/V Chikyu between 2022-02-14 – 2022-03-15. During the offshore phase, smear slides were prepared from paleontology samples collected with a tip-cut syringe from section ends every 5 m. During the onshore phase, smear slides samples were collected every 2 m to complement visual core description observations and identify the composition of fine-grained sediment. The smear slides were prepared by putting a small amount of sediment on a glass slide mixed with distilled water. The slide was subsequently evaporated on a hot plate, and the dried sample was mounted in Norland Optical Adhesive 61 using ultraviolet light. Sediment grain size and composition were examined under a polarized light petrographic microscope (Zeiss Axio Imager A1m POL-1) with an ocular micrometer.For further methodological information see methods chapter in Strasser, M. et al., 2023 https://doi.org/10.14379/iodp.proc.386.102.2023

本数据集包含国际大洋发现计划（International Ocean Discovery Program, IODP）386次航次（日本海沟古地震学研究）指定钻孔的涂片玻片描述信息。该航次的海上作业阶段于2021年4月13日至2021年6月1日期间开展，搭载日本“海明号”（R/V Kaimei）考察船，往返作业于日本横须贺港。本次航次随后开展了陆上作业阶段，该阶段于2022年2月14日至2022年3月15日在“地球号”（D/V Chikyu）钻探船上完成。海上作业阶段中，研究人员每5米从岩心段末端使用尖切注射器采集的古生物样品中制备涂片玻片。陆上作业阶段则每2米采集涂片玻片样品，用于补充岩心目视描述的观测结果，并识别细粒沉积物的组成成分。涂片玻片的制备流程如下：取少量沉积物与蒸馏水混合后滴置于载玻片上，随后在热板上蒸发干燥，再使用紫外光固化诺兰光学胶61（Norland Optical Adhesive 61）进行封片。沉积物的粒度与组成通过偏光岩相显微镜（Zeiss Axio Imager A1m POL-1）配合目镜测微计进行检测分析。如需获取更详细的实验方法信息，请参阅Strasser M.等人2023年发表的研究论文中的方法章节，链接：https://doi.org/10.14379/iodp.proc.386.102.2023