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Research paper : The advanced geological researches and fundamental national land information (M. Saito)−15−Synthesiology - English edition Vol.3 No.1 (2010) formations other than the Jurassic accretionary complex have in some cases been called the Kurosegawa Tectonic Zone. Other rock formations have been divided into three belts: the Southern and Northern Chichibu Belts, composed of Jurassic accretionary complexes, and the Central Chichibu Belt including other rock formations. Moreover, in the early 1990s, it was believed that the rocks on Shikoku composed of serpentinite and other metamorphic rocks (components of the so-called Kurosegawa Belt) overlie the Jurassic accretionary complex above a low-angle thrust fault[2][3].2.4 Our specific geological objectivesIn the Tomochi district, in addition to the Jurassic accretionary complex, serpentinites and other metamorphic rocks, Silurian to Devonian sedimentary rocks, and Permian to Cretaceous shallow-marine sediments are widely distributed. Investigation of the regional relationships of the previously identified geological entities was a specific objective of our mapping, with the aim of clarifying the classification of the rocks of the Jurassic accretionary complex and other formations, thus resolving the major contentious issues of previous interpretations of the geological evolution of the Japanese Archipelago.There were many other interesting issues to investigate, such as the geological structure of Cretaceous shallow-marine deposits, the relationship of Cretaceous metamorphic rocks to the surrounding rocks, and the evolutionary history of Cretaceous high-temperature metamorphic rocks. Another specific objective was to clarify these issues so that our mapping of the Tomochi sheet would create a standard to be used in further investigations of the regional geology over a wide area surrounding the Tomochi sheet.3 Societal value of the GMJ programA discussion of the societal value of geological maps such as the GMJ 1:50,000 series has been published by AIST[4], and that of geological maps in general has been considered by the United States Geological Survey[5][6].Products of the GMJ 1:50,000 series have many uses. Some of these are:1) civil engineering and construction (e.g., construction of roads, dams, power stations, bridges, and commercial and residential buildings);2) disaster prevention (e.g., information on active faults, volcanic eruptions, flooding of rivers, ground subsidence, landslides, unstable ground);3) resource development (e.g., information about oil, natural gas, coal, geothermal energy, hot springs, groundwater, minerals such as metals and clay, dimension stone and aggregate);Geological Map of Japan 1:50,000 and 1:200,000Basic geological mapsEfficient infrastructure Industrial locations with low risk of disastersEfficient infrastructure Safe and secure societyCompaniesNational, regional and local governmentCivil engineering and construction companies(MLIT related)GeologicalconsultantsPower companiesPeople, societyPeople, societyCompanies, societyCompaniesCultural agenciesNational, regional and local governmentInsurance companiesSales･InformationMaintain safty of resourcesImprovement of cultural resourcesSecure society protected against disasterReduction of environmental impactPolicymaking for location of industrial and residential areas Landslide prevention measuresDetermination of farm road construction and agriculturalwater intake sitesDetermination of road constructionroutesGeological information for damconstructionDetermination of tunnel routesLocation of power stationsBasis of reliability of geological maps created by industryBasic material for resource development (e.g. limestone, crushed rock, natural gas)Selection of national monument (geological features, minerals)Earthquake hazard mapsDetermination of earthquake insurance rate for industryThematic mapsCivil engineering and construction companies(MAFF related)Selection of geological waste disposal sitesStandard of geology of studied area Determination of earthquake insurance rate for residences(expected)Evacuation advisories for volcanic eruptionsMILT: Ministry of Land, Infrastructure, Transport and Tourism, MAFF: Ministry of Agriculture, Forestry and Fisheries of JapanFig. 2 Uses of GMJ products and outcomes[4].

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