Geological Survey of Japan. This map depicts known geothermal fields on a generalized tectonic base map. It also shows heat flow contours, Quaternary volcanoes, and power plants. Geological Survey of Japan. This map shows the numerous small coal fields of Japan.
Information is given on the type and age of the deposits.
Geologic Quadrangle Maps. Geological Survey of Japan. Sheet size is variable. 648555NG5105 Miyakojima. 1978. 648555NI5328 Kochi. 1958.