The accompanying drawing shows ground contours at ten-metre intervals on a map.
(a) On the drawing supplied draw a vertical section (profile) on the line DE.
(b) Vertical boreholes at A, B and C strike a stratum of ore at altitudes of 70 m, 40 m and 50 m respectively. Determine the dip and strike of the stratum.
(c) Draw the outline of the outcrop.