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Pennsylvania Spatial Data: Mississippian Sandstones Assessment Unit
From the site: "The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit... -
Pennsylvania Spatial Data: Marcellus Shale Assessment Unit Quarter Mile Cells
From the site: "Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production, and... -
Pennsylvania Spatial Data: Marcellus Shale Assessment Unit
From the site: "The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit... -
Marcellus and other Devonian Shales
Map layers associated with the Marcellus Shale in the interactive mapping system include various Onondaga map layers. This is confusing to many users--i.e., why don't we use...
![Welcome to the GEOSS Information Exchange Datahub [BETA]](/uddi/base/images/uddi/GEOSS-Exchange-Beta.png "Welcome to the GEOSS Information Exchange Datahub [BETA]")