Thin section image data 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. Exp: expedition number Site: site number Hole: hole number Core: core number Type: type indicates the coring tool used to recover the core (typical types are F, H, R, X). Sect: section number A/W: archive (A) or working (W) section half. Top offset on section (cm): position of the upper edge of the thin section imaged, measured relative to the top of the section or section half. Bottom offset on section (cm): position of the lower edge of the thin section imaged, measured relative to the top of the section or section half. Top depth CSF-A (m): location of the upper edge of the thin section imaged expressed relative to the top of the hole. Bottom depth CSF-A (m): location of the lower edge of the thin section imaged expressed relative to the top of the hole. Top depth [other] (m): location of the upper edge of the thin section imaged expressed relative to the top of a hole. The location is presented in a scale selected by the science party or the report user. Bottom depth [other] (m): location of the lower edge of the thin section imaged expressed relative to the top of a hole. The location is presented in a scale selected by the science party or the report user. Image (JPG) link: link to URL of JPG version of thin section image. Image filename: filename of thin section image provided for identification purposes. Magnification: macro setting on the camera (1x, 2x, etc.). Polarization: none, single (plane), or cross (each thin section is imaged under both single- and cross-polarized light). Label identifier: automatically generated name for a sample that is printed on labels. Timestamp (UTC): point in time at which an observation or set of observations were made. Precise meaning of the value varies between systems due to variation in capability and/or implementation. Instrument: camera (e.g., Canon EOS-1Ds Mark II). Instrument group: PICAT Text ID: automatically generated unique database identifier for a sample, visible on printed labels. Test No.: unique number associated with the instrument measurement steps that produced these data. Comments: observer's notes about the sample.