From the site: "A reference map of systematic coal-fracture trends, fracture domain, and Mississippian shale, sandstone, and limestone fractures in the Allegheny Plateau...
From the site: "This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as...
From the site: "The AAPG, under the direction and guidance of the GIS Publications Committee and AAPG Datapages, is building a GIS / spatial library comprised of peer-reviewed...
A collection of commonly used GIS datasets for Tennessee; collections include data for Tennessee wetlands, geology, censuses, soils, digital raster graphics, and digital...
From the site: "A GIS database of geologic units and structural features in Ohio, with lithology, age, data structure, and format written and arranged just like the other states."
A collection of shapefiles created and compiled by the National Oceanic and Atmospheric Administration. The data is intended to help people understand and predict weather...
From the site: "A GIS database of geologic units and structural features in Delaware, with lithology, age, data structure, and format written and arranged just like the other...
This map service allows users to build a thematic chloropleth map of Kentucky or a selected area within the state from a selection of 545 groundwater quality analytes in 15...
From the site: "Airborne measurement of the earth's magnetic field over all of North America provides gridded data describing the magnetic anomaly caused by variations in earth...
Gathering Resources...From the site: "This map layer contains the shallowest principal aquifers of the conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands, portrayed as...