Visual core description of IODP Hole 386-M0087D

Collection of visual core description (VCD) sheets (hand drawn originals and digital representations) and lithologic composite plots from the above given hole of International Ocean Discovery Program (IODP) Expedition 386 (Japan Trench Paleoseismology). VCD was performed on unsampled archive halves of split cores, directly after linescan imaging, during the onshore phase of expedition 386, which took place between 2022-02-14 – 2022-03-15 onboard D/V Chikyu. The lithology of each core section is represented on the hand drawn VCDs by graphic patterns next to the X-ray CT image of the archive-half core section. Further, a wide variety of features that characterize the sediment are indicated in additional columns. The information from the hand-drawn VCD sheets was then transferred into the Drilling Information System database (s. also datasets "Description of lithologic section units of IODP Hole 386-M0087D"), from where it could be accessed semi-automated to produce digital lithologic columns and composite plots using Strater (Golden Software).For further methodological information see methods chapter in Strasser, M. et al., 2023 https://doi.org/10.14379/iodp.proc.386.102.2023

本数据集包含国际大洋发现计划（International Ocean Discovery Program, IODP）第386次科考航次（日本海沟古地震学研究）指定钻孔的可视化岩心描述（Visual Core Description, VCD）工作表（含手绘原稿与数字化副本）及岩性综合柱状图。本次VCD工作于2022年2月14日至2022年3月15日的航次陆上处理阶段开展，作业流程为在劈开岩心的未采样归档半芯完成线扫描成像后，直接开展可视化岩心描述，全程搭载于“地球”号深海钻探船（D/V Chikyu）执行。手绘VCD工作表中，每个岩心段的岩性通过该归档半芯的X射线计算机断层扫描（X-ray CT）图像旁的图形图案进行表征。此外，额外列中还标注了表征沉积物特征的各类沉积与物性信息。手绘VCD工作表中的信息随后被录入钻井信息系统数据库（亦可参见数据集《IODP 386-M0087D孔岩性段单元描述》），科研人员可通过该数据库半自动调用数据，利用Strater（Golden Software）软件生成数字化岩性柱状图与综合柱状图。更多方法学细节请参阅Strasser M等人2023年发表的研究中的方法章节，链接：https://doi.org/10.14379/iodp.proc.386.102.2023