Applying the specified bearings, draw the horizontal projections AC and BD of the bore-
holes in Fig. 21 a.
- Locate the points of intersection with the hanging wall and
footwall in elevation
In Fig. 276, draw an elevation normal to the borehole through A; locate the points of in-
tersection H 0 and F 0 with the hanging wall and footwall, respectively. Select the horizon-
tal plane through A as datum.
3. Repeat the foregoing construction with respect to borehole
through B
This construction is shown in Fig. 21 c.
4. Locate the points of intersection in plan
In Fig. 21 a, locate the points of intersection. Draw lines H 0 H 17 and F 0 F^ The former lies
in the hanging wall and the latter in the footwall. To avoid crowding, reproduce the plan
of line H 0 H,, in Fig. 27 d.
5. Draw the plan of a line HbG that is parallel and equal in length
to FaFb
Do this by applying the second principle given above. In accordance with principle a,
FIGURE 27
(Q) Plan(d) Plan