Smear slide descriptions of IODP Hole 386-M0088B

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（日本海沟古地震学研究）指定钻孔的涂片玻片描述档案。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，搭载日本调查船“海明号”（R/V Kaimei），往返作业基点为日本横须贺港。随后该航次进入陆上作业阶段，于2022年2月14日至2022年3月15日期间在“地球号”钻探船（D/V Chikyu）上完成。海上作业阶段中，研究人员每间隔5米从岩心段端部使用尖端裁切的注射器采集古生物样品，并制备涂片玻片。陆上作业阶段则每间隔2米采集涂片玻片样品，用以补充岩心目视描述观测结果，并鉴别细粒沉积物的组成成分。涂片玻片的制备流程为：取少量沉积物与蒸馏水混合后滴加至载玻片表面，随后将载玻片置于热板上进行蒸发干燥，最后使用紫外光固化胶Norland Optical Adhesive 61对干燥后的样品进行封片处理。沉积物的粒度与组成通过偏光岩石显微镜（polarized light petrographic microscope）Zeiss Axio Imager A1m POL-1结合目镜测微计进行观测分析。如需获取进一步的实验方法细节，请参阅Strasser M.等人2023年发表于《国际大洋发现计划进展》（IODP Proceedings）第386卷第102章的相关内容，链接为https://doi.org/10.14379/iodp.proc.386.102.2023。