From the Associated Press:
The Maryland Department of Natural Resources says a new map shows the distribution of Marcellus shale deposits in western Maryland.
The shale deposits are being eyed as a source of natural gas. However, environmentalists are concerned that new hydraulic fracturing techniques used to free the gas from shale deposits could harm water quality.
The department says the map will help balance the impact of human activity and the preservation of natural resources.
DNR says the map includes cross sections of geologic features under the surface, including their proximity to groundwater.
A state task force is studying the potential impact of natural gas drilling and some lawmakers in Annapolis are pushing for a drilling moratorium until a comprehensive study is completed.
DNR Western Maryland Map — www.mgs.md.gov/geo/wmdgeomap.html
Chesapeake Energy Corp,the Oklahoma-based firm is the No. 1 driller in Ohio.
Rig Count Interactive Map by Baker Hughes, an energy services company.
Shale Sheet Fracking, a Youngstown Vindicator blog.
The Ohio Environmental Council, a statewide eco-group based in Columbus.
Earthjustice, a national eco-group.
People's Oil and Gas Collaborative-Ohio, a grass-roots group in Northeast Ohio.
Concerned Citizens of Medina County, a grass-roots group.
No Frack Ohio, a Columbus-based grass-roots group.
Fracking: Gas Drilling's Environmental Threat by ProPublica, an online journalism site.
Pipeline, blog from Pittsburgh Post-Gazette on Marcellus shale drilling.
Allegheny Front, environmental public radio for Western Pennsylvania.