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Geochemical paleoredox indicators in Devonian–Mississippian black shales,...
Information on subsurface data, mineral compositions/amounts, in the Appalachian Basin black shales -
Number of Producing Gas Wells in Each State
Number of producing gas wells in each state from 1989 to 2012, includes downloadable excel charts and graph options. -
USGS WaterWatch
USGS site which holds information about surface water and subsurface water in the United States. Includes: constantly-updated maps, maps predicting and depicting weather... -
U.S. Crude Oil and Natural Gas Proved Reserves
Site includes data and information on remaining oil and gas reserves in the U.S., includes downloadable graphs, PDFs, and Excel charts. Summary: In 2011, oil and gas exploration...