E-mail: neogeo@ns.igs.ac.by
The second paper concerned with formations of the platform cover of Belarus includes a system descrip-tion of sulfate-chloride and magmatic formations and the analysis of the problem of formation-based cartography of the studied region. Sulfate-chloride (halogenic) formations were revealed in deposits of the Hercynian com-plex only, where these are represented by thick strata of Frasnian, Famennian and Lower Permian rock salt in-cluding horizons of potassic salt, anhydrite, limestone, dolomite and marl. The accumulation of Devonian halo-genic formations is related to the main rifting phases in the Pripyat Trough, and the Lower Permian ones are as-sociated with postrifting molassoids. The platform magmatic formations are genetically due to volcanism which evidences were shown in the Middle Riphean, Early Vendian and Late Devonian. Trachyandesite and rhyolite-diabasic formations of the Lower Riphean are spatially confined to plutonic rocks and are independent of the basement structures, Upper-Riphean gabbrodiabasic and basalt-diabasic formations are indicative of dispersion magmatism within the Volyn-Orsha and Krestets paleorifts. Lower-Vendian basaltic, dacite-liparite and gabbro-diabasic formations locate the position of the continental rift, which is buried under accumulative deposits in the East European Craton southwestern margin. Rift Upper Devonian magmatic associations are represented by al-kaline and ultrabasic igneous products of central- and fissure-type volcanos and by rocks genetically related to diatremes. These rocks show promise for diamonds. Magmatic formations of the region reflect the stages of the Earth's crust destruction. Medium-scale structure-formation, formation-paleogeodynamic and formation-paleotectonic maps of the territory of Belarus are advised to be compiled with the suggested formation model and unconventional techniques.