Core and Borehole Fractures from the Cape Roberts Drilling Project, Southern Victoria Land, Antarctica: Transantarctic Mountains Front Stress Field History

Natural and drilling-induced fractures in core, and fractures in
borehole walls, were logged from three Cape Roberts Project drillholes
located in the western Ross Sea, Antarctica. Core fracture data
includes depth, dip and dip azimuth (core coordinates), and
fractographic features. Records were kept of intact core intervals,
which are continuous lengths of core where no internal relative motion
occurred. Approximately one quarter of the core from CRP-2 and CRP-3
drillholes was oriented by feature matching between oriented borehole
televiewer logs and whole-core digital scans. Tables of rotation
angles to restore intact intervals of core to in situ coordinates are
available. Digital records obtained by this project include
whole-core scans of most of the core, scans of the entire slabbed
core, and borehole televiewer imagery of portions of CRP-2 and CRP-3
borehole walls. The fracture, intact interval and orientation tables
are available as Excel files from the project investigators. The
digital core records can be provided on CD-ROM for the cost of the
recording media. Detailed description of the data sets and
interpretations made from them can be found in the Cape Roberts
Project Intital Reports and Science Reports volumes for each
drillhole; see Reference section.