Browsing ELibrary by Author "Zagornaya N.Yu."

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AGE LIMITS AND FORMATION DURATION OF PALEOPROTEROZOIC VOLCANIC BELTS IN THE CENTRAL ALDAN SHIELD

Anisimova I.V.; Kotov A.B.; Glebovitsky V.A.; Sal'nikova E.B.; Yakovleva S.Z.; Velikoslavinsky S.D.; Zagornaya N.Yu. (2006)

The available geological, geochronological, geochemical, and isotopic data furnish evidence that the Paleoproterozoic protoliths of metavolcanic rocks in the central Aldan Shield were formed within a geodynamic system of ...
AGE LIMITS OF HIGH-GRADE METAMORPHIC SUPRACRUSTAL COMPLEXES IN THE CENTRAL ALDAN SHIELD: SM-ND ISOTOPIC DATA

Kovach V.P.; Kotov A.B.; Sal'nikova E.B.; Velikoslavinskii S.D.; Zagornaya N.Yu.; Berezkin V.I.; Smelov A.P. (1999)

First investigation results on Sm-Nd isotope systems in clastic metasedimentary and metavolcanic rocks from the high-grade metamorphic supracrustal complexes of central Aldan Shield are used to approximately evaluate their ...
AGE LIMITS OF THE GREENSTONE BELTS OF THE WESTERN ALDAN SHIELD

Kotov A.B.; Anisimova I.V.; Glebovitsky V.A.; Kovach V.P.; Sal'nikova E.B.; Zagornaya N.Yu.; Smelov A.P.; Berezkin V.I. (2004)

The main features in the geological structure of the western Aldan Shield are largely determined by nearly meridional and NE-trending fault zones that host numerous tectonic fragments composed of weakly metamorphosed ...
CRUST-FORMING PROCESSES IN THE GEOLOGIC DEVELOPMENT OF THE TUVA-MONGOLIA MASSIF: SM-ND ISOTOPIC AND GEOCHEMICAL DATA FOR GRANITOIDS

Kozakov I.K.; Kovach V.P.; Kotov A.B.; Salnikova E.B.; Zagornaya N.Yu.; Yarmolyuk V.V. (2003)

The compositions of igneous rocks from the Tuva-Mongolia massif were studied. These rocks were formed during the precollisional, syncollisional, and postcollisional stages of massif formation. The compositions of strongly ...
PROTOLITHS OF THE METAMORPHIC ROCKS OF THE FEDOROV COMPLEX, ALDAN SHIELD: CHARACTER, AGE, AND GEODYNAMIC ENVIRONMENTS OF ORIGIN

Velikoslavinsky S.D.; Kotov A.B.; Sal'nikova E.B.; Kovach V.P.; Glebovitsky V.A.; Zagornaya N.Yu.; Yakovleva S.Z.; Anisimova I.V.; Fedoseenko A.M.; Tolmacheva E.V. (2006)

Geochemical data indicate that the protoliths of the overwhelming majority of the metamorphic rocks composing the Fedorov Complex in the Aldan granulite megacomplex were volcanic rocks of three groups, which occur in ...
SM-ND ISOTOPIC SYSTEMATICS OF THE KURUMKAN SUBGROUP, THE IENGRA GROUP OF ALDAN SHIELD

Kovach V.P.; Kotov A.B.; Salnikova E.B.; Zagornaya N.Yu.; Berezkin V.I.; Smelov A.P. (1996)

The first data on the Nd isotopic composition in high-AI gneisses and associated gamet-hypersthene-biotite plagiogneisses of the Kurumkan Subgroup, the lengra Group of Aldan Shield are presented. The obtained results show ...
SOURCES AND PROVENANCES OF LOWER PROTEROZOIC TERRIGENOUS ROCKS OF THE UDOKAN GROUP, SOUTHERN KODAR-UDOKAN DEPRESSION: RESULTS OF SM-ND ISOTOPIC INVESTIGATIONS

Podkovyrov V.N.; Kotov A.B.; Larin A.M.; Kotova L.N.; Kovach V.P.; Zagornaya N.Yu. (2006)

The Early Proterozoic was characterized by the development of large epicratonic depressions, which often host large and unique deposits of Cu, Pb, Zn, U, Au, Fe, phosphorites, barite, fluorite, and other mineral resources. ...
SUPRACRUSTAL SEQUENCES OF THE BELOMORIAN MOBILE BELT: PROTOLITHS, AGE, AND ORIGIN

Myskova T.A.; Glebovitskii V.A.; Miller Yu.V.; L'vov A.B.; Kotov A.B.; Kovach V.P.; Zagornaya N.Yu. (2003)

Two section types are established in the Chupa nappe of the Early Precambrian Belomorian mobile belt (BMB) of the Baltic shield: one in the Lake Verkhnee Pulongskoe area of the stratotype region (Chupa Complex) and the ...
THE U-PB AGE OF THE FEDOROV SEQUENCE OF THE ALDAN GRANULITE-GNEISS MEGACOMPLEX, THE ALDAN SHIELD

Velikoslavinsky S.D.; Kotov A.B.; Sal'nikova E.B.; Glebovitsky V.A.; Kovach V.P.; Zagornaya N.Yu.; Belyaevsky N.A.; Yakovleva S.Z.; Fedoseenko A.M. (2003)

The results of geochronological investigation confirm the assumption of the Early Proterozoic age of Fedorov rock mass. The estimated age (2006±3 mln years) of metaandesite protolytes of this series agrees with age estimates ...
U-PB AGE OF GRANITOIDS IN THE JUNCTION ZONE BETWEEN THE OLEKMA GRANITE-GREENSTONE AND ALDAN GRANULITE-GNEISS TERRANES

Salnikova E.B.; Kotov A.B.; Belyatskii B.V.; Yakovleva S.Z.; Morozova I.M.; Berezhnaya N.G.; Zagornaya N.Yu. (1997)

U-Pb dating of zircons from the reference granitoid complexes showed that principal thrusts in the northern flank of the junction zone between the Olekma granite-greenstone and Aldan granulite-gneiss terranes of the Aldan ...

Browsing ELibrary by Author "Zagornaya N.Yu."

Browsing ELibrary by Author "Zagornaya N.Yu."

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