KARST RESEARCH IN THE MIDWEST WITH EMPHASIS ON NEW CAVE RESEARCH AND CONTAMINANT FLOW FROM AGRICULTURAL AND INDUSTRIAL SOURCES THROUGH THE EPIKARST

The purpose of this presentation is to emphasize relevant research in Midwestern Karst from a geomorphic and geologic perspective. There are other areas of significant research such as flora and fauna studies in caves that will not be discussed in this presentation. Also, the geomorphic and geological perspective which includes the chemical and physical aspects cannot be totally discussed due to the large number of studies. Therefore, this presentation will include research being conducted in caves such as using travertine studies to age date events and trace earthquake occurrences in the Midwest.

The main topic is the epikarst and the importance of the epikarst in controlling agricultural and industrial contaminant transport in karst terrains. Better understanding of the importance of epikrast transport is necessary to alleviate contaminant pollution. Point source pollution from landfills and farms in addition to diffuse infiltration from agricultural activities are major environmental issues in karst.

It should be understood that the subject of the development of epikarst and how it affects ground water flow can vary from one karst area to another. Examples of this will be presented in the discussion showing how dense non-aqueous phase liquids such as PCBs are extremely difficult to remediate once they flow into the karst aquifer.