This map of U.S. Regions is based on work from the U. S. Geological Survey 1995 National Assessment of United States Oil and Gas Resources (available on CD-ROM from the U.S.G.S. as Digital Data Series DDS-30, Release 2).
Click on a region you are interested in.
U.S. Exploration History
Small Movie of Exploration History, (QuickTime, 65K)
Large Movie of Exploration History, (QuickTime, 194K)