Microstructure of experimental faults in Pāpaku Fault core samples (IODP site U1518)

Backscattered electron images of experimentally deformed samples from the Pāpaku Fault, Hikurangi Margin, New Zealand (International Ocean Discovery Program, Site U1518). In the experiments, intact mini-cores extracted from drill core samples were deformed in a single-direct shear box at MARUM, University of Bremen. Details of the experiments and the experimental data are available from the Pangea data publisher at: 

The data set contains original mosaics of whole thin sections, cut parallel to the shear direction and perpendicular to the experimental fault. These are in TIFF format and named SAMPLE#.tif.

Annotated images include interpretations of the deformed zone (in red shading) superimposed on images that have been enhanced for better contrast. These are in Adobe Illustrator format and named SAMPLE#_annotated.ai.

For image analysis, traces of the inferred deformed zone were extracted and scaled in ImageJ. These traces are available in TIFF format and named SAMPLE#_dz_trace.tif. Our measurements based on these traces are tabulated in Papaku_experiments_microstructure_data.csv.