Browsing ELibrary by Author "Kamensky I.L."

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3H-3HE DATING: A CASE FOR MIXING OF YOUNG AND OLD GROUNDWATERS

Kamensky I.L.; Tolstikhin I.N.; Tokarev I.V. (1991)

3 He / 4 He and 20 Ne / 4 He ratios were measured in shallow underground waters (opened by water-supplying wells) of the Large Vud-Javr intramountain artesian basin in the Khibiny alkaline massif, the Kola Peninsula. The ...
AGE OF MANTLE METASOMATISM AND FORMATION OF THE KOLA PALEOZOIC ALKALINE PROVINCE

Vetrin V.R.; Kamensky I.L.; Ikorsky S.V. (2003)
HELIUM ISOTOPES, TECTONICS AND HEAT FLOW IN THE NORTHERN CAUCASUS

Polyak B.G.; Yakovlev L.E.; Tolstikhin I.N.; Kamensky I.L.; Marty B.; Cheshko A.L. (2000)

109 new measurements of ³He/⁴He ≡ R in subsurface fluids of the Northern Caucasus coupled with the data obtained previously allow regional regularities in the distribution of helium isotopic composition to be examined. ...
JUVENILE HELIUM IN ANCIENT ROCKS: I. THE EXCESS IN AMPHIBOLES FROM 2.8 GA CHARNOCKITE SERIES-CRUST-MANTLE FLUID IN INTRACRUSTAL MAGMATIC PROCESSES

Kamensky I.L.; Tolstikhin I.N.; Vetrin V.R. (1990)

The 3He/4He in materials derived from the mantle is decreasing in the course of time and approaches the radiogenic value during {approx equal} 1 Ga. Some minerals, however, trapped volatiles, including He, and preserve ...
JUVENILE HELIUM IN ANCIENT ROCKS: II. U-HE, K-AR, SM-ND, AND RB-SR SYSTEMATICS IN THE MONCHE PLUTON. 3HE 4HE RATIOS FROZEN IN URANIUM-FREE ULTRAMAFIC ROCKS

Tolstikhin I.N.; Dokuchaeva V.S.; Kamensky I.L.; Amelin Yu.V. (1992)

The important geodynamic parameter, the ratio in rocks and fluids of the continental crust, is generally decreasing from the mantle values (≅10−5) to the radiogenic ratio (≅10−8) on the time scale of about 1 Ga or less. ...
MANTLE COMPONENT IN PROTEROZOIC GRANITOIDS: EVIDENCE FROM HE ISOTOPES IN ROCKS AND MINERALS

Vetrin V.R.; Kamensky I.L.; Ikorsky S.V. (2001)
MANTLE FLUID IN PROTEROZOIC GRANITOIDS: HE AND AR ISOTOPES IN ROCKS AND MINERALS OF THE LITZA-ARAGUBA DIORITE-GRANITE COMPLEX, KOLA PENINSULA

Vetrin V.R.; Kamensky I.L.; Ikorsky S.V. (2002)

The isotopic composition of He and Ar was analyzed in rocks and minerals from the Early Protero-zoic Litza-Araguba diorite-granite complex in the northwestern part of the Kola Peninsula. The initial 4He/3He ratio of the ...
PLUME-DERIVED RARE GASES IN 380 MA CARBONATITES FROM THE KOLA REGION (RUSSIA) AND THE ARGON ISOTOPIC COMPOSITION IN THE DEEP MANTLE

Marty B.; Tolstikhin I.; Zimmermann J.L.; Kamensky I.L.; Nivin V.; Balaganskaya E. (1998)

In an effort to document the source of the parental melts to carbonatites, we have measured rare gases in 380 Ma carbonatites and associated mineral assemblages from the Kola Peninsula, eastern part of the Baltic shield ...
RADIOGENIC HELIUM ISOTOPE FRACTIONATION: THE ROLE OF TRITIUM AS 3HE PRECURSOR IN GEOCHEMICAL APPLICATIONS

Tolstikhin I.N.; Kamensky I.L.; Nivin V.A.; Gannibal M.A.; Lehmann B.E.; Loosli H.H.; Orlov S.P.; Ploschansky L.M.; Tokarev I.V. (1999)

Reduced 4He/3He ratios, e.g., down to ≈1/100 times those expected from radiogenic production, were observed in sedimentary rocks. Formation and history of these rocks eliminate a contribution of mantle 3He-bearing fluid. ...
RARE GAS ISOTOPES AND PARENT TRACE ELEMENTS IN ULTRABASIC-ALKALINE-CARBONATITE COMPLEXES, KOLA PENINSULA: IDENTIFICATION OF LOWER MANTLE PLUME COMPONENT

Tolstikhin I.N.; Kamensky I.L.; Nivin V.A.; Vetrin V.R.; Balaganskaya E.G.; Ikorsky S.V.; Gannibal M.A.; Marty B.; Weiss D.; Verhulst A.; Demaiffe D. (2002)

During the Devonian magmatism (370 Ma ago) ∼20 ultrabasic-alkaline-carbonatite complexes (UACC) were formed in the Kola Peninsula (north-east of the Baltic Shield). In order to understand mantle and crust sources and ...

Browsing ELibrary by Author "Kamensky I.L."

Browsing ELibrary by Author "Kamensky I.L."

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