Borehole Traverse Orientation

If the Traverse Type is BOREHOLE:

If the mapping has been conducted on core recovered from a BOREHOLE, then THREE orientations are required in the Traverse Information dialog to define the borehole traverse:

 000; 000; 000 (Orient 1 / Orient 2 / Orient 3)

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VERY IMPORTANT!!!

Also see the borehole data topic for ESSENTIAL INFORMATION concerning the orientation data pairs alpha and beta for discontinuities logged on a borehole traverse.

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ORIENTATION 1

The angle from the top of core to the reference line (measured clockwise looking in the down core direction). Use 0 if the borehole is vertical.

ORIENTATION 2

The inclination of the borehole axis from the zenith. Use 0 for a borehole oriented vertically upwards, and 180 if the borehole is oriented vertically downwards.

ORIENTATION 3

The azimuth of the borehole measured from true north. For a vertical borehole, use the clockwise angle from true north to the reference line, looking along the direction of borehole advance.