Preliminary Assessment of the Potential Geothermal Energy Resources of Flooded Abandoned Underground Mines in Ohio. Mark E. Wolfe, Ohio Division of Geological Survey. A high percentage of the more than 7,000 known abandoned underground mines in Ohio are partially or completely filled with water and are thus considered to be geohazards due to the potential for mine collapse or acid mine drainage. However, these mines may hold a key to unlocking a vast network of renewable geothermal energy. Wolfe presents an evaluation of the potential for recovery of geothermal energy resources from these mines for heating and cooling, with an associated economic benefit to surrounding communities. http://gsa.confex.com/gsa/2012NC/finalprogram/abstract_202725.htm (paper 13-2).
Mercury Biogeochemistry. Chad R. Hammerschmidt, Wright State University; Gary Conley, Ohio University, presiding. Mercury has contaminated Earth's landscapes and aquatic systems on a global scale. The problem is exacerbated by continuing anthropogenic emissions, recycling of a large reservoir of historic mercury pollution, and the microbial transformation of inorganic mercury to methylmercury -- a highly toxic, bioaccumulative compound that can biomagnify in aquatic food webs to levels that may be harmful to fish, wildlife, and humans.
Abstracts: http://gsa.confex.com/gsa/2012NC/finalprogram/session_30159.htm, 3:20 p.m. to 5:20 p.m. (session 8).
Mercury Speciation in Tuna from the North Pacific Ocean. Jaclyn E. Klaus, Wright State University; Daniel J. Madigan, Stanford University; and Chad R. Hammerschmidt, Wright State University. It has been known for some time that canned and fresh tuna can expose consumers to highly toxic methylmercury (M
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Geological Society of America