Smear slide microscopy images of IODP Hole 386-M0082C

Collection of smear slide microscopy images 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. With a few exceptions, one photo with open and one with crossed nicol prisms was taken of each slide. […]本数据集收录了国际大洋发现计划（International Ocean Discovery Program, IODP）386次科考航次（日本海沟古地震研究）指定钻孔的涂片显微镜图像集合。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，搭载日本籍研究船“海明号”（R/V Kaimei）从日本横须贺启航并最终返回横须贺港。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”钻探船（D/V Chikyu）上完成。海上作业阶段内，科研人员每间隔5米从岩心段端部使用尖端裁切注射器采集古生物样本，并以此制备显微涂片。陆上作业阶段则每间隔2米采集涂片样本，以补充岩心目视描述观测工作并识别细粒沉积物的组成成分。涂片制备流程为：取少量沉积物与蒸馏水混合后滴加至载玻片上，随后将载玻片置于热板上蒸发干燥，再使用紫外光固化将诺兰光学胶61（Norland Optical Adhesive 61）覆盖于干燥样本之上。科研人员使用偏光岩相显微镜（蔡司Axio Imager A1m POL-1）配合目镜测微尺对沉积物的粒径与组成进行观测分析。除少数例外情况外，每张涂片均拍摄两张照片：一张采用全开尼科尔棱镜模式，另一张采用正交尼科尔棱镜模式。[…]