Smear slide descriptions of IODP Hole 386-M0091B

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. […]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）指定钻孔的涂片玻片描述信息。该航次海上作业阶段于2021年4月13日至2021年6月1日开展，搭载日本科研调查船“海明号（R/V Kaimei）”，往返于日本横须贺港。后续于2022年2月14日至2022年3月15日实施陆上作业阶段，作业平台为“地球号（D/V Chikyu）”钻探船。海上作业阶段中，研究人员每间隔5米从岩芯段末端利用切尖注射器采集古生物样本，并制备涂片玻片；陆上作业阶段则每间隔2米采集涂片玻片样本，以补充岩芯目视描述的观测结果，同时识别细粒沉积物的组成成分。涂片玻片的制备方法如下：取少量沉积物与蒸馏水混合后滴于载玻片上，随后将玻片置于热板上蒸干，再使用紫外光固化Norland Optical Adhesive 61光学胶对干燥样品进行封片。沉积物粒度与组成通过配备目镜测微尺的偏光岩相显微镜（蔡司Axio Imager A1m POL-1）开展观测分析。[…]