a) A second fault surface exists exactly 100 meters elevation below the one depicted below. Draw its
map expression (the equivalent of the red line for the second fault).
b) A horizontal bed is cut by these faults. In the footwall of the lowest fault it is at an elevation of 350 m.
In the footwall of the higher fault it is at an elevation of 290 m, and in the hanging wall of the higher
fault it is at 210 m elevation. Draw in the map expression of the horizontal bed as it is cut by these two
faults. You will need to interpolate between the given contour lines. Remember that the footwall is the
block beneath a dipping fault, and the hanging wall is that above.
100 m
500 m
N
400 m
300 m
m
200 m
100 m
500 m
500 m
400 m
300 m
300 m
200 m
200 m
100 m
100 m
geologic contact