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← GeographyWhich geological outcome occurs when overlying clay restricts drainage in epikarst?
A)Accelerated sinkhole collapse✓
B)Increased cave network stability
C)Reduced karst aquifer recharge
D)Enhanced limestone cementation
💡 Explanation
Clay layers restrict water infiltration into the underlying soluble bedrock, enhancing dissolution focused near the surface via differential dissolution; because the clay restricts water flow, pressure gradients increase leading to focused dissolution and surface collapse sinkholes, rather than gradual dissolution.
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