Sinkhole formation

Localized collapse of the land surface usually due to erosion of the underlying materials. Most commonly occurring in karst areas, but similar effects occur due to physical erosion in other terranes.
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Water and rock geochemistry, geologic cross sections, geochemical modeling, and groundwater flow modeling for identifying the source of groundwater to Montezuma Well, a natural spring in central Arizona

This report releases data, cross section, and model information related to the identification of travel paths for groundwater supply and principal stratigraphic and structural features that serve as constraints or conduits for groundwater movement.