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Address : 1A.P. Karpinsky Russian Geological Research Institute (VSEGEI), Russian Federation-2Special Design Office, Russian Federation
Celebration date : 17 Wednesday September 2008
Author name : Krasny, Lev1; Krasny, Mikhail2

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  • Article title : Renewable mineral resources and neotectonics
    Article type : Tectonic & Seismotectonic
    Location : International Geological Congress,oslo 2008

    Fulltext :

    The distribution of renewable mineral resources is allegedly governed by tectonic structures neotectonic motions that embrace all major superstructures of the Earth: World Ocean, continents, and their junctions (active transitional zones).
    Heat- and power-consuming percolations of hydrothermal solutions play a crucial role in structures dominated by active tectonics expressed as volcanism, riftogenesis, pull-apart and shear faulting, and various contrasting movements. The creative work of percolations promotes a virtually constant supply of raw minerals.
    Recent important discoveries in the field of renewable resources in volcanic regions include the first rhenium deposit at Kudryavyi Volcano (Iturup Island, Kuril island arc), where rhenium sulfide is released from volcanic gases with a temperature of 450-500 °C. The Rh content in gases varies from 0.5 to 8 ppm and depends on the gas temperature and meteorological conditions. The gases are also characterized by high contents of Ge, In, and other rare and noble metals. The total gas output from the crater amounts to 30,000 t/d.
    Neotectonics processes and associated renewable of mineral resources where detected during the investigation of ore genesis in oceans where giant deposits of endogenous material are known. We are witnessing a constant restoration of oceanic mineral resources due to intense hydrothermal activity: outflow of hot ore-bearing solutions onto the ocean floor can be observed from manned submersibles.
    Minerals have constantly been forming in the Dead Sea over the past several centuries. Lacustrine saliferous basins of North America are confined to young grabens and such basins are continuing to expand in the course of active hydrothermal discharges.
    Sandstone-hosted uranium and complex uranium-base metal deposits in stratal oxidation zones make up a specific class of exogenic-epigenetic renewable deposits formed in the Recent (Paleogene-Quaternary) epoch.
    Renewable of hydrocarbon reserves has been recorded at some deposits after their long-term exploitation (e.g., the White Tiger deposit in the shelf zone of Vietnam). Such processes have also been reported recently from some deposits in Tatarstan (Russia).
    Thus, recent tectonogeodynamic (neotectonics) processes are closely associated with minerageny and they are recorded in marginal seas of the active continent/ocean transition zone, riftogenic belts of the World Ocean, and some barrier zones of continents. Such a process can be called "repetominerageny" (from Latin "repeto"). Such processes related significantly to exhumation of the thermochemical power-consuming mantle create a fundamentally new geodynamic setting.