Digital surfaces and thicknesses of nine hydrogeologic units of the Ozark Plateaus aquifer system from land surface to the top of the Gunter Sandstone in northwestern Arkansas were created using geophysical logs, drillers’ logs, geologist-interpreted form
Czarnecki, John B. jczarnec@usgs.gov,Bolyard, Susan E.,Hart, Rheannon M. rmhart@usgs.gov,et al. Digital surfaces and thicknesses of selected hydrogeologic units within the Ozark Plateaus aquifer system, northwestern Arkansas. 2014-01-01.