Radiolaria occurrences of IODP Hole 386-M0082D

Results of radiolarian analyses 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, followed by an onshore phase onboard D/V Chikyu between 2022-02-14 – 2022-03-15. During the offshore phase, samples for radiolarian analyses were taken from the end of split cores at 2 m intervals. These were complemented during the onshore phase with samples from event layers identified from X-ray CT images. Samples in this dataset where categorized depending on their sedimentary regime by the following type key: E = event, H = hemipelagic, ? = unknown. Slides prepared from these samples were partially examined at 50× to 400× using a Zeiss Axio Imager.A1m POL-1 optical microscope on board Chikyu.

本数据集收录国际大洋发现计划（International Ocean Discovery Program, IODP）386航次（日本海沟古地震学）指定钻孔的放射虫分析成果。该航次包含两个作业阶段：海上作业阶段于2021年4月13日至2021年6月1日期间开展，搭载日本科考船"开南号"（R/V Kaimei）从日本横须贺出发并返航；陆上作业阶段则于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，放射虫分析样品以2米间隔取自劈开岩心的末端；陆上作业阶段补充采集了通过X射线计算机断层扫描（X-ray CT）图像识别得到的事件层样品。本数据集内的样品依据其沉积环境类型，通过以下分类标识进行区分：E代表事件沉积层，H代表半远洋沉积层，？代表沉积环境未知。由上述样品制备的显微薄片，部分在"地球号"船上使用蔡司（Zeiss）Axio Imager.A1m POL-1型光学显微镜，以50×至400×的放大倍率完成观测。