Major Sources of Carbon Dioxide Emissions from Coal in Indiana
This new IGSMap contains information about CO2 emissions from coal in Indiana. The collection of maps shows major point sources of CO2 emissions, including commercial and municipal electric power plants and industrial and institutional coal-fired boilers, and the Indiana coal mines that supply them. In addition, Indiana coal-related CO2 emissions from 2010 are compared to CO2 emissions from other states during the same time period.
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The Indiana Geological Survey participates in a federally funded program to produce high-resolution geologic maps. Here Dr. Brian D. Keith examines an outcrop of Pennsylvanian sandstone in Martin County as part of his south-central Indiana mapping efforts.
20,000-Year-Old Spruce Forest Discovered
A recent geologic mapping project revealed evidence of past climate conditions and vegetation existing approximately 20,000 years ago when a large continental ice sheet advanced into southeastern Indiana. An exposure of glacial sediments indicate that the ice sheet advanced over a small pond or wetland near a meltwater stream. These sediments contain fragments of spruce trees, including logs with bark still intact, suggesting climate conditions similar to that of the modern-day boreal forest of Canada. Radiocarbon dating and a new technique called optically stimulated luminescence dating was used to determine the age of the organic material and sediments.