Browsing by Author "Powers, Donovan M."

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  • Swinford, E. Mac; Powers, Donovan M.; Angle, Michael P.; Pavey, Richard R. (ODNR Division of Geological Survey, 2012-07-12)
    On March 18, 2008, ground water levels rose to a 30-year high in the Bellevue, Ohio, area. Surface and near-surface geologic conditions combined with unusually high precipitation caused extensive flooding of fields, roadways, ...
  • Aden, Douglas J.; Powers, Donovan M.; Pavey, Richard R.; Jones, D. Mark; Martin, Dean R.; Shrake, Douglas L.; Angle, Michael P. (Ohio Department of Natural Resources, Division of Geological Survey, 2011)
    To locate sinks, LiDAR was used to create an ArcGIS layer that identified low, enclosed areas. These low spots were cross referenced with known karst points, bedrock geology, aerial photography (multiple sources/ages), ...
  • Aden, Douglas J.; Powers, Donovan M.; Pavey, Richard R.; Jones, D. Mark; Martin, Dean R.; Angle, Michael P. (Ohio Department of Natural Resources, Division of Geological Survey, 2011)
    Karst terrain forms by dissolution of carbonate rocks (limestone or dolomite) and occasionally evaporates (gypsum or salt) and is characterized by features such as sinkholes (or sinks), disappearing streams, caves, and ...
  • Shrake, Douglas L.; Venteris, Erik R.; Larsen, Glenn E.; Angle, Michael P.; Pavey, Richard R.; Wolfe, Mark E.; Powers, Donovan M. (Ohio Department of Natural Resources, Division of Geological Survey, 2011-02)
    The Ohio Department of Natural Resources (ODNR), Division of Geological Survey has completed a reconnaissance map showing areas of mineable bedrock, including shale, limestone, and dolomite, likely covered by thin surficial ...

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