GEOLOGIC FEATURES RELEVANT TO GROUND-WATER FLOW ...
GEOLOGIC FEATURES RELEVANT TO GROUND-WATER FLOW ...
GEOLOGIC FEATURES RELEVANT TO GROUND-WATER FLOW ...
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James A. Drahovzal and R. Todd Hendricks 28<br />
Figure 6. Clastic dike composed of resistant sandstone in the Porters Creek Clay. Note that the dike makes a<br />
right-angle turn near the shovel blade. Elva Quadrangle, Kentucky.