|Mt. Simon Formation, Michigan Basin and Ohio Area
We calculated a pressure gradient of 0.0095 Mpa/m from a pressure vs. depth diagram (Vugrinovich, 1986). Additionally, we added 16 pressure data points supplied to us by Vugrinovich, (personal communication, 2000) in our analysis. Gridded data are presented in c12bmtsimon.
Vugrinovich, Raymond, 1986, Patterns of regional subsurface fluid movement in the Michigan Basin: Michigan Department of Natural Resources, Geological Survey Division, Open File Report 86-6.
Vugrinovich, Raymond, 2000, Senior Geologist, Michigan Department of Environmental Quality, Geological Survey Division, personal communication.