|
Oleg Fedorenko , Scientific Institute of Natural Resources YUGGEO (Kazakhstan)
Bulat Uzhkenov , Committee of geology and subsoil usage of the Republic of Kazakhstan (Kazakhstan)
Aleksander Smirnov, Scientific Institute of Natural Resources YUGGEO (Kazakhstan)
Mikhail Rafailovich, Scientific Institute of Natural Resources YUGGEO (Kazakhstan)
Victor Krasnoborodkin, Scientific Institute of Natural Resources YUGGEO (Kazakhstan)
William Bush, State Research and Production Enterprise ?Aerogeophysica? (Russian Federation)
Sergey Shokalsky, All-Russian Geological Research Institute ?VSEGEI? (Russian Federation)
Rena Maksumova, Institute of Geology, National Academy of Sciences (Kyrgyzstan)
Bakhtijar Isakhodzhaev, Institute of mineral resources (Uzbekistan)
Vitaliy Troitsky , Tashkent State University (Uzbekistan)
|
|
The paleogeographic, geodynamic and minerogenic analysis on R3-V, ª1, O1-2, O3, D1-2, D2-3, D3fm, C1 v2-s, C2, P1, T2, J2, K2, Ð2 levels is performed in process of compilation of the CEA territory's Atlas of maps. The main types of mineral raw material of CEA enter in Wilson's evolutionary cycle. Maximum productive epochs for solid minerals deposits are: Devonian (riftogene, active continental margins and collision geodynamic environments); Carboniferous (above subduction, collision and intracontinental environments); Late Carboniferous - Permian (collision, intraplate and intracontinental environments); Mesozoic - Cenozoic (intracontinental environment). The maximum variety of geological-commercial types, high density of mineral deposits distribution and large minerogenic potential are characteristic for Early-Late Paleozoic island arches and volcanic-plutonic belts. Deposits of global scale and other large deposits are connected with them: gold-copper-molybdenum-porphyry and copper-porphyry (Kalmakyr, Dalnee, Kounrad), gold-copper-zinc and copper-zinc pyrites (Uchalinskoe, Gajskoe, Sibajskoe), pyritaceous-polymetallic (Ridder-Sokolnoe), skarn-magnetite (Magnitogorsk, Sokolovsko-Sarbaj), titanium-magnetite (Davydovskoe), vein, stockwork and streaky impregnated of gold (Bestjube, Akbakaj, Jubilejnoe, Kochbulak), skarn of Pb-Zn (Karagajly), fluorite (Taskajnar) et al. Collision geodynamic environments and connected with them ore controlling intrusive complexes have appeared in O3, D3, C2-3, Ñ3-Ð time. For example, large and giant deposits of Au (Vasilkovskoe), W (Bayan), Sn (Syrymbet), U (Kosachinoe, Grachevskoe) are connected with O3 and D3 collision in Kokshetau region. Large deposits connected with lacustrine-swampy, karst, infiltration, weathering crusts, placer are formed at the intracontinental geodynamic environments (PZ3-MZ-KZ). Among them are deposits of: hard and brown coals (Kuzbas, Karaganda basin, Angren); ferrous metals (Fe - Lisakovskoe, Ajatskoe; Mn - Chiaturskoe, Ushkatyn III; Ni, Co - Gornostaevskoe, Shevchenkovskoe); uranium (Uchkuduk, Inkaj, Melovoe); gold (Suzdal, Svetlinskoe); bauxites (Krasnooktjabrskoe); Pb, Zn (Shajmerden) et al. Geodynamic classification of sedimentary basins allows to determine their hydrocarbonic potential. Continental passive margins, which were stably sinking during hundreds millions of years, can be considered as the richest on hydrocarbons. First of all it concern Volga-Ural and Pricaspian basins. North-Caucasus - Mangyshlak and Amu Darya basins developed shorter time and has smaller oil-gas resources than Volga-Ural and Near-Caspian basins. Intraplate basins have low hydrocarbonic potential because of continental environment of sediments accumulation.
|
