The advanced geological researches and fundamental national land information

Abstract

The Geological Map of Japan 1:50,000 shows fundamental national land information of the subsurface materials of the district, and is multifariously used for resources development, disaster prevention, siting of industrial activities, environment protection, and as the geological standard of the district. It is important basic information for understanding natural environments scientifically and is essential information for the sustainable development of Japan. While geological maps mostly made by universities or companies are for understanding specifically interesting strata or rocks, the 1:50,000 geological maps made by GSJ, AIST comprehensively integrate research results of all strata and rocks in the district and explain the geological evolution of the district. There has never been any paper describing the process in developing the 1:50,000 geological map, which integrates geological research for the district. The author shows his own development process with the 1:50,000 geological maps as examples.