Which mechanism primarily causes catastrophic sinkhole formation in coastal regions above fractured limestone aquifers?

💡 Explanation

Buoyant fracturing worsens sinkhole formation because dissolution weakens limestone; buoyant forces then exert upwards pressure, furthering fracturing. Therefore, instability arises rather than from sediment compaction or simple overburden pressure exceeding layer strength in some instances.

• Which effect occurs when extensive grassland is overgrazed within a loess deposit region, exposed to seasonal wind?
• Which risk greatly increases when excessive groundwater extraction collapses subterranean karst systems?
• Which outcome occurs when groundwater exploitation exceeds recharge in an alluvial aquifer?
• Which process explains differences in fjord sill depth and isostatic rebound rates?
• Which process determines cirque orientation when valley glaciers form on mountains?
• Which consequence results near the coast when excessive groundwater extraction destabilizes karst?