IODP Expedition 391 Thin section images

Hard rock and sediment thin section images were acquired using either the JRSO-developed Petrographic Image Capture and Archival Tool (PICAT) imager or (rarely) an upright microscope and a digital camera. Sample images are acquired in unpolarized, polarized, and/or cross-polarized light. Image files are presented compressed by hole.硬岩与沉积岩薄片图像的采集可借助JRSO开发的岩相图像捕获与存档成像仪（Petrographic Image Capture and Archival Tool，缩写PICAT）完成，极少数情况下也可使用正置显微镜搭配数码相机采集。样本图像将在非偏振光、偏振光及（或）交叉偏振光照明条件下获取。所提供的图像文件均按钻孔单元进行压缩存储。