Smear slide descriptions of IODP Hole 386-M0083E

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. […]

本数据集为国际大洋发现计划（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。本航次海上作业阶段于2021年4月13日至2021年6月1日期间开展，搭载日本调查船“开南号”（R/V Kaimei）从日本横须贺出发并返回横须贺；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”钻探船（D/V Chikyu）上完成。海上作业阶段中，研究人员每5米从岩芯端部使用尖端切割式注射器（tip-cut syringe）采集古生物样品并制备涂片玻片；陆上作业阶段则以每2米的间隔采集涂片玻片样品，以辅助岩芯目视描述工作并识别细粒沉积物的组成成分。涂片玻片的制备流程为：取少量沉积物与蒸馏水混合后滴于载玻片上，随后将载玻片置于热板上烘干，再使用Norland Optical Adhesive 61紫外光学胶对干燥后的样品进行封固。研究人员借助搭载目镜测微尺（ocular micrometer）的蔡司（Zeiss）Axio Imager A1m POL-1型偏光岩相显微镜对沉积物的粒度与组成进行观测分析。[…]