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Information × Registration Number 0207U004530, 0102U005569 , R & D reports Title NUCLEAR-PHYSICAL METHODS OF MEASUREMENT OF ROCK AGE, MINERALS AND METEORITES popup.stage_title Head Dikiy Mikola Petrovich, Registration Date 12-04-2007 Organization Institute of High Energy Physics and Nuclear Physics NSC KIPT popup.description2 Results of experimental work on making nuclear physical technique of age determination of uranium minerals up to 300 thousand years by means of radiation registration of disintegration products 235,238U are presented. Measurements of age of uranium in samples of uranium ore of Geltorechenskogo deposits (120 thousand years) are carried out and this age coincides with rise of a level of world ocean in Quaternary. Results of test low-background installation on basis Ge(Li)-detector with layers Pb, Cu and Al are presented. The installation allow to lower background radiation in 10-12 time. The determination of mica age (biotite, lepidolite, muscovite, phlogopite) up to 3 billion years are carried out by radiation registration from the induced activity of isotopes 87mSr, 84Rb or 86Rb. Calibration of installation for measurement of radiation spectra with use enriched 87SrCO3 and natural isotope content SrCO3 is carried out. In samples of biotite from Stankovatskoe deposit (Ukraine) contents 87Sr, 87Rb, determined nuclear physical methods are 222, 6362 mkg/g, accordingly, that allows to make a tentative estimation of biotite age 2,4 billion years. The isotope relation 44Ca/48Ca in geological samples of calcite (Caucasus), fluorite (Baikal), apatite (Kola peninsula) and stone meteorite Tsarev (L5) is determined. For stone meteorite Tsarev (L5) enrichment by an isotope of calcium - 44 on 16 % more, than in geological samples is observed. Product Description popup.authors popup.nrat_date 2020-04-02 Close