United Downs 1 borehole image interpretation

This dataset contains the borehole image interpretation of the United Downs 1 borehole, Cornwall (BGSID: 21246966)

The acoustic borehole images have been interpreted for faults, breakouts and conductive and resistive fractures.

For faults and fractures each line in the file defines a plane passing through the borehole. This includes:

• Depth at which the plane intersects the borehole wall, this is defined as the midpoint of the feature as each plane has a top and bottom intersection.
• Azimuth, this is the azimuth of the dip direction of the plane, it is at 90 degrees to the strike of the feature.
• Dip, this is the dip angle of the plane.
• Type, this is a classification of the feature.

For breakouts each line represents an individual feature which covers an area of the borehole wall.

This includes:

• Depth the midpoint depth of the breakout.
• Azimuth, this is the orientation of the breakout.
• Type, this is a classification of the feature.
• Breakout Height, the length of the breakout in meters.
• Breakout Width, the width of the breakout in degrees.
• Type, this is a classification of the feature.

The work was undertaken by BGS as part of the GWatt Project award reference number NE/S004262/1. It was funded by the UKRI Natural Environment Research Council.