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Stop 9: Monahans Sandhills State Park

Page history last edited by Matt Farris 12 years, 5 months ago

back to Stop 1: Playa Lakes near Haskell, TX

Monahans Sandhills is on the egde of the Southern High Plains. This is a topographic trap where the sand is trapped by the caprock feature called "Caliche."

Close-up Caliche in previous picture. The caliche is a carbonate rock which has a lower hydraulic conductivity than the surrounding sand.

This is eveidence of a perched aquifer. There was a pluvial event in the Pleistocene that caused more running water to occur, but now the sand dunes are eolian.