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Figure 2-M8 shows a portion of the Dry Gully Quad. The solid lines are formation contacts,and the dashed lines are the traces of kink-fold hinges. Below the map is a

cross section of the quad drawn perpendicular to strike. (20 pts) a. Construct both an isochore or isopach map of the Snehal Shale using a 30 meter contour interval. Note that the Snehal Shale is 61 meters thick. b. What is the difference between an isochore and isopach map?

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