Smear slide descriptions of IODP Hole 386-M0083A@en

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资料。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，搭载日本科研船“海明”号（R/V Kaimei），往返于日本横须贺港。随后的陆上作业阶段于2022年2月14日至2022年3月15日期间在“地球”号（D/V Chikyu）钻探船上完成。海上作业阶段中，科研人员每间隔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，以补充岩心目视描述观测结果，识别细粒沉积物的组成成分。涂片玻片的制备流程为：取少量沉积物置于载玻片上，与蒸馏水混合后在热板上蒸发干燥；随后使用诺兰光学胶61（Norland Optical Adhesive 61）通过紫外光固化，将干燥样品封固于载玻片上。科研人员采用配备目镜测微尺的偏光岩石显微镜（Zeiss Axio Imager A1m POL-1）对沉积物的粒度与组成进行观测分析。[…]