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Environmental and Engineering Geoscience; November 2002; v. 8; no. 4; p. 319-328; DOI: 10.2113/8.4.319
© 2002 Association of Engineering Geologists
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Geological Controls on the Distribution and Origin of Selected Inorganic Ions in Ohio Groundwater

NORMAN S. LEVINE1, SHEILA J. ROBERTS1 and JENNIFER L. ARING2

1 Department of Geology, Bowling Green State University, Bowling Green, OH 43403
2 Department of Geology, Pennsylvania State University, State College, PA 16802

Contour maps showing the concentration of selected inorganic ions across the state of Ohio illustrate that high concentrations of some ions visually correlate with the location of major geologic features, whereas other ions are randomly distributed. Strontium and sulfate have high concentrations over the Cincinnati, Findlay, and Kankakee arches, where carbonate aquifers containing gypsum and celestite are located. The highest concentrations of potassium and beryllium are located along the Cambridge fault zone, a major structural feature in eastern Ohio. High concentrations of iron and nitrate are found adjacent to single wells. Nitrate highs may be related to anthropogenic contamination, whereas some iron anomalies are located where sulfate is high. The maps produced in this study indicate that statewide contour maps of ion concentrations are useful for correlating aquifer chemistry with the regional geology of an area and determining the background level of ions on a state-wide scale.

Key Words: Environmental Geology • Geochemistry • Groundwater Hydrology • Hydrogeology • Modeling/Statistics • Geographic Information Systems






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