At the current stage of metallogenic science, the global analysis of location of large-scale ore concentrations in the Earth’s crust becomes impossible without use of a spatially distributed database of large and superlarge mineral deposits (DB LSLD). The database has been created since 1999. Last years a GIS-project related to DB LSLD has been compiled. The former has been used for development of the CD-ROM “Largest Mineral Deposits of the World” – the first completed production of the Russian-French Metallogenic Laboratory. The report contains brief descriptions all of them and some data analysis results.

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     On solution of various geological problems one often has to process large data files to reveal geochemical or geophysical anomalies and for their following interpretation. We demonstrate means of DSS data processing with tools of GIS ARC/INFO.

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     A database of large and superlarge deposits (Au, Ag, PGE, Cu, Pb, Zn, Ni, Co, Sn, W, Mo, Sb, Hg, Li, Be, Nb, Ta, Zr, TR, Fe, Cr, Mn, Ti, V, Al, U, B, P, F, sheet micas, potash, and diamonds) and linked GIS project with stand-alone application on CD-ROM “Largest Mineral Deposits of the World” are described. All of them may be used for global metallogenic analysis and educational purposes.

     Two models are developed on the basis of geophysical data processing and interpretation. The first model describes a pipe-like heat-and-flow system reasoning appearance of mafic-ultramafic intrusiaons. The second one describes middle-crust sill-like zones of granitization occurred at the surface as granitoid intrusions located along margins of the sill-like zones. To the same margines, granite-related large and superlarge ore objects are known. Both models have specific signatures in gravity field and deep seismic sounding data. In some cases, remote sensing data can be used for mapping the second model elements. The research is being supported by Russian Federal Agency “Rosnedra”, and French embassy in Moscow. At the earliest stages, NATO and Russian Academy of Sciences provided some support as well.

     Developed by BRGM and the Vernadsky State Geological Museum, the Geographic Information System (GIS) for Karelia (Cassard et al., 2004) notably includes a mineral deposit thematic layer based on a specific database for which a first presentation has been done at an early stage (Leistel et al., 2004). The database is now almost completed for the Fennoscandian shield and the purpose of this paper is to present the first conclusions that can be withdrawn.

     CD-ROM

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     The GIS (Geographic Information System) Karelia, is developed in the frame of a joint BRGM - Vernadsky SGM RAS COCOP / NATO Project entitled "Creation of a French-Russian Hub for the Search and Discovery of Super-Large Metallic Deposits". The GIS is composed of spatially referenced geographical, geological, geophysical and mineral deposit thematic lay-ers, and their respective attribute data. It is used to establish insights in the regions mineral potential and its past and future mining activi-ties. Subsequently, the information system is further exploited to derive new rules between the different attribute information in their relation to mineral deposit formation and the spatial dis-tribution of the deposits.

     This work has been carried out in the 3D Geological modeling module of the COCOP/NATO project entitled: Creation of a French-Russian Research Hub for the Search and Discovery of Super-Large Metallic Deposits . COCOP RUS/3B1/800 and NATO CLG 980145 The general objective of this module is to model the geology and the petrophysical properties of selected areas in the Fennoscandian shield. As referred to in the original project description, the work to be carried out and its objectives are: (1) model the geometry of key geological structures and volumes using geological data (maps, sections, etc.), (2) perform inverse modeling methods based on available gravimetry, magnetic and seismic data for adjusting model geometry. The Burakovsky block has been chosen as a first case study.

     Developed by BRGM and the Vernadsky State Geological Museum , the Geographic Information System (GIS) for Karelia (Cassard et al., 2004) notably includes a mineral deposit thematic layer based on a specific database.

     In the last decades, informational revolution provided facilities pushing multiple scientific groups for creating digital models of our planet. Diversities of these attempts make us intended to review the up-to-date state of the problem. All the models in work are being presented by databases that can be divided on local and distributed, technically speaking, and, on the other hand, on specialized and pretending on universality, in terms of their content.

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