Browsing by Author "Ciobotaru, Valerian"

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    REPARTIŢIA ELEMENTELOR DIN GRUPA TR ÎN STRATELE DE VÂRSTĂ VENDIANĂ DIN REGIUNEA CENTRALĂ A BAZINULUI r. NISTRU
    (CEP USM, 2008) Ciobotaru, Valerian; Popuiac, Aurelia
    In the lithologic formations of the northern part of Republic Moldova considerably big concentrations of the TRGroup elements have been discovered such as La, Ce, Yb, Yand Sc. These elements and their chemical components areapplied in a variety of different fields: chemistry, optics, metallurgy, cosmonautics and aeronautics, electronics, atomic energy, etc. The geological premises for the TR Group elements presence in the Nistru River area are considerably highand, taking into consideration their exclusive importance for the modern technologies, some Geological and Geochemical prospecting’s can be projected aiming to solve the problem for localization of some TR significant accumulationwithin the terrigenous stratums.
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    UTILIZAREA DATELOR SPECTROGRAFICE ÎN PROSPECŢIUNILE GEOCHIMICE
    (CEP USM, 2008) Ciobotaru, Valerian; Popuiac, Aurelia
    In the studies dedicated to geological mapping that refer to the Northeastern regions of the Republic of Moldova developed by the geological teams from the State Agency of Geology (AGeoM) the geo-chemical researches on strata of the Vendian age have been included that contain various concentrations of Zn, Pb, Ba, Ag, TR, etc. Because the geochemical database was created based on the spectrographic analyses with a limited sensibility, appeared the necessity to compare the spectrographic results with the results that were obtained on atomic adsorption method that is a more precise and sensitive method to be applied.