@USGS: Map of Assessed Continuous (Unconventional) Oil Resources in the U.S., 2014

[PUB] Map of Assessed Continuous (Unconventional) Oil Resources in the U.S., 2014 http://t.co/RaGDKjXR0N #energy pic.twitter.com/LF1MmX7KKP

— USGS (@USGS) March 2, 2015