Photomicrographs Microscopic images of discrete samples were acquired using stereo and upright light microscopes and captured on digital cameras. Image files were uploaded along with a brief description and a record of the microscopic and lighting conditions when the image was taken. Data File format 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 (cm): position of the upper edge of the sample imaged, measured relative to the top of the section. Bottom offset (cm): position of the lower edge of the sample imaged, measured relative to the top of the section. Top depth CSF-A (m): location of the upper edge of the sample imaged expressed relative to the top of the hole. Bottom depth CSF-A (m): location of the lower edge of the sample imaged expressed relative to the top of the hole. Top depth CSF-B (m): location of the upper edge of the sample imaged expressed relative to the top of the hole. Bottom depth CSF-B (m): location of the lower edge of the sample imaged expressed relative to the top of the hole. Image filename: name of the JPEG image file. Contrast method: contrast method (e.g., brightfield, fluorescence, polarization). Illumination type: type of light source used for the image capture (e.g., transmitted, reflected, fluorescence). Objective: objective used during image capture, including the magnification value. 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. Text ID: automatically generated unique database identifier for a sample, visible on printed labels. Comments: observer's notes about the sample.