3-D Structural Geology
Exercise 8.8.7
Faults on an Isopach Map
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Figure 8.55 is an isopach map. Locate the faults that explain the thickness changes. Indicate the
upthrown and downthrown sides of each fault. Determine the throw on each fault. Make a structure
contour map of the faults.
Fig. 8.55. Isopach map of the lower Taylor Formation above the Hawkins salt dome, Texas. Posted next to the wells (circles) are
the thickness (upper or left-hand number) and the elevation of the formation top, in feet below sea level. (After Hintze 1971)
R. H. Groshong, 3-D Structural Geology, 2nd ed., © Springer-Verlag 2006