Geothermal energy is heat derived from Earth's interior.
Resources may include hot springs and wells, hot dry rock,
and even molten rock. These may be converted into heat and
electricity.
The 1980 publication, Thermal Springs List for the
United States, is available from NGDC (email address,
below) or
searchable on-line, in plain text format.
The Thermal Springs List is also available on-line as a
Virtual Map of Thermal Springs, an experiment in
Web-based mapping. You'll need a high speed connection
for this.
