GEOCHEMICAL-ATLAS-OF-THE-SLOVAK-REPUBLIC AT A SCALE OF 1 1,000,000/

The Geochemical Atlas of Slovak Republic (49,036 km(2)) at a scale of 1:1,000,000 was compiled during 1991-1995 together with maps of associ ated geochemical and ecological features at a scale of 1:200,000. Inve stigations were aimed at the evaluation of concentrations and distribu tions of Al, As, Ba, Be, Ca, Ce, Co, Cd, Cs, Cr, Cu, Fe, Ga, Hg, K, La , Li, Mg, Mn, Mo, Na, Ni, P, Pb, Rb, Sb, Se, Sn, Sr, Th, U, V, W, Y, Z n, Zr in groundwater (16,359 samples), stream sediments (24,422 sample s), rocks (3839 samples), soils (9892 samples from 4946 profiles; A an d C horizons of each profile were sampled) and forest biomass (the fol iage of the forest tree species from 3063 plots was sampled). In groun dwater field measurements of temperature, pH, conductivity, dissolved O-2, acidity, alkalinity were done. The evaluation was oriented to the natural radioactivity of the Slovak territory as follows: rocks (K, U , Th, U,,, and dose rate, 15,573 reference spectrometric points), rado n risk and water (U-nat, Ra-226, Rn-222; 5271 samples). The main objec tive of the Geochemical Atlas was to construct single-component maps s howing concentrations of chemical elements, compounds and measured par ameters in the researched media of Slovakia at a scale of 1:1,000,000 and to create interactive databases of chemical composition and/or mea sured parameters of groundwater, biomass, rocks, soils, stream sedimen ts and natural radioactivity, for the entire territory of the Slovak R epublic. The single-component maps are not constructed in the part 'Ro cks', where all the main rocks types of Slovakia are presented in the 'Map of lithogeochemical rock types of Slovakia at a scale of 1:500,00 0'. The edition of six atlases has been planned. In 1997 the first thr ee atlases will appear (Groundwater, Biomass, Natural Radioactivity). Publishing of last three atlases (Rocks, Soils, Stream Sediments) is p lanned for 1998. Since the analytical works an Stream sediments were f inished during 1997, it was not possible to present here the results o f that part of the Geochemical Atlas. (C) 1997 Elsevier Science B.V.