Геология России: Recent submissions

Now showing items 1441-1460 of 40749

TARGET DELAMINATION BY SPALLATION AND EJECTA DRAGGING: AN EXAMPLE FROM THE RIES CRATER'S PERIPHERY

Kenkmann T.; Ivanov B.A. (2006)

Subhorizontal shear planes (detachments) are observed in bedded limestones in the periphery of the Ries impact crater, Germany. These detachments occur at 0.8-1.8 crater radii distance from the crater center beneath deposits ...
FIRST OCCURRENCE OF IODINE IN NATURAL SULFOSALTS: THE CASE OF MUTNOVSKITE, PB2ASS3(I,CL,BR), A NEW MINERAL FROM THE MUTNOVSKY VOLCANO, KAMCHATKA PENINSULA, RUSSIAN FEDERATION

Zelenski M.; Balić-Žunić T.; Makovicky E.; Bindi L.; Garavelli A.; Pinto D.; Vurro F. (2006)

Mutnovskite, ideally Pb2AsS3 (I,Cl,Br), is a new mineral from the high-temperature fumaroles of the Mutnovsky volcano, Kamchatka Peninsula, Russian Federation. It occurs as microscopic rubycolored short-prismatic crystals ...
BENTHIC FORAMINIFERS IN UPPER QUATERNARY SEDIMENTS OF THE SOUTHERN BERING SEA: DISTRIBUTION AND PALEOCEANOGRAPHIC INTERPRETATIONS

Khusid T.A.; Chekhovskaya M.P.; Basov I.A.; Gorbarenko S.A. (2006)

Composition and distribution of benthic foraminifers, being coupled with isotopic-geochemical data on Upper Pleistocene and Holocene sediments from the southern Bering Sea (Core GC-11; 53°31′ N, 178°51′E, water depth 3060 ...
THE LITHOSPHERE BENEATH THE SANGILEN PLATEAU, SIBERIA: EVIDENCE FROM PERIDOTITE, PYROXENITE AND GABBRO XENOLITHS FROM ALKALINE BASALTS

Egorova V.V.; Volkova N.I.; Shelepaev R.A.; Izokh A.E. (2006)

Ultramafic and mafic xenoliths in Ordovician Agardag alkaline basalt dikes from the Sangilen Plateau, southeastern Siberia, provide samples from the upper mantle and crust beneath central Asia. Three major groups were ...
SILICATE AND CARBONATE MELT INCLUSIONS ASSOCIATED WITH DIAMONDS IN DEEPLY SUBDUCTED CARBONATE ROCKS

Korsakov A.V.; Hermann J. (2006)

Deeply subducted carbonate rocks from the Kokchetav massif (Northern Kazakhstan) recrystallised within the diamond stability field (P = 4.5-6.0 GPa; T ≈ 1000°C) and preserve evidence for ultra high-pressure carbonate and ...
IR ABSORPTION SPECTRA OF VITREOUS SILICA AND SILICATE GLASSES: THE NATURE OF BANDS IN THE 1300 TO 5000 CM- 1 REGION

Efimov A.M.; Pogareva V.G. (2006)

The transmittance spectra of Types I and III silica glasses in the 1300 to 5000 cm- 1 region are measured and the absorptivity spectra calculated from data obtained are processed with the dispersion analysis method based ...
AGE OF THE VALLESIAN LOWER BOUNDARY (CONTINENTAL MIOCENE OF EUROPE)

Vangengeim E.A.; Tesakov A.S.; Lungu A.N. (2006)

The Vallesian lower boundary and Hipparion-datum are estimated as ranging in age from 11.2 to 10.7 Ma in Central to Western Europe and Western Asia. Judging from complete sections of Sarmatian marine sediments in the ...
WHAT CONTROLS THICKNESS OF SEDIMENTS AND LITHOSPHERIC DEFORMATION AT A PULL-APART BASIN?

Petrunin A.; Sobolev S.V. (2006)

We present a simplified three-dimensional thermomechanical model of a pull-apart basin formed at an overstepping of an active continental transform fault. The modeling shows that for a given strike-slip displacement and ...
PLIENSBACHIAN-TOARCIAN BIOTIC TURNOVER IN NORTH SIBERIA AND THE ARCTIC REGION

Zakharov V.A.; Shurygin B.N.; Il'ina V.I.; Nikitenko B.L. (2006)

The biotic turnover in the Pliensbachian-Toarcian transition and changes in assemblages of bivalves, ostracodes, foraminifers, dinocysts, spores, and pollen are described. Only five of 24 bivalve genera and two of four ...
THE APTIAN-CENOMANIAN FLORA OF PRIMOR'E, PART 2: CORRELATION OF FLORAL ASSEMBLAGES

Volynets E.B. (2006)

Taxonomic composition of plant fossils from the Aptian-Cenomanian sediments of the Alchan, Razdol'naya, and Partizanskaya depressions of Primor'e is studied in detail. Each of the established floral assemblages characterizes ...
MESOZOIC SYNCOLLISION SILICICLASTIC SEDIMENTS OF THE BOLS'SHOI LYAKHOV ISLAND (NEW SIBERIAN ISLANDS)

Kyz'michev A.B.; Soloviev A.V.; Gonikberg V.E.; Zamzhitskii O.V.; Shapiro M.N. (2006)

Graywackes and shales of the Bols'shoi Lyakhov Island originally attributed to the Mesozoic were subsequently considered based on microfossils as the Late Proterozoic in age. At present, these sediments in the greater part ...
PALEOZOIC ROCKS IN INFRASTRUCTURE OF THE METAMORPHIC CORE, THE GREATER CAUCASUS MAIN RANGE ZONE

Somin M.L.; Kotov A.B.; Sal'nikova E.B.; Levchenkov O.A.; Yakovleva S.Z.; Pis'mennyi A.N. (2006)

Granitoid orthogneisses and migmatites are widespread in the lower, deeply metamorphosed gneiss-migmatite complex of the pre-Alpine basement (infrastructure) exposed within northern part of the Greater Caucasus Main Range ...
CRUST-PRIMITIVE MAGMA INTERACTION BENEATH NEOVOLCANIC RIFT ZONE OF ICELAND RECORDED IN GABBRO XENOLITHS FROM MIDFELL, SW ICELAND

Gurenko A.A.; Sobolev A.V. (2006)

We studied glass-bearing gabbro xenoliths from picritic pillow lavas erupted in the Midfell area, SW Iceland. The aim of this study is to investigate the processes affecting chemical composition of primitive Icelandic ...
THE PALEOCENE AND EOCENE IN THE RUSSIAN PART OF WEST EURASIA

Akhmets'ev M.A.; Beniamovski V.N. (2006)

Biostratigraphic charts of marine Paleocene and Eocene in the European and West Siberian parts of Russia include the unified zonations of nannoplankton, planktonic and benthic foraminifers, dinocysts, radiolarians, diatoms, ...
THE DARRIWILIAN ACRITARCH ASSEMBLAGE FROM ORDOVICIAN DEPOSITS OF THE ARKHANGELSK OBLAST, THE NORTHERN RUSSIAN PLATE

Raevskaya E.G.; Volkova N.A.; Sivertseva I.A. (2006)

Borehole 2506 drilled in the northern area of the Arkhangelsk Oblast penetrated through the Paleozoic sedimentary block isolated in the Vendian thick sequence. A diverse acritarch assemblage has been established within the ...
SEASONAL VARIABILITY OF ATLANTIC WATER ON THE CONTINENTAL SLOPE OF THE LAPTEV SEA DURING 2002-2004

Dmitrenko I.A.; Polyakov I.V.; Simmons H.L.; Ivanov V.V.; Kirillov S.A.; Timokhov L.A.; Walsh D. (2006)

2002-04 observations carried out on the Laptev Sea continental slope as part of the Nansen and Amundsen Basins Observational System (NABOS) project are used to study variations of the intermediate (150-800 m) Atlantic water ...
BERRIASIAN (LOWER CRETACEOUS) BRACHIOPODS FROM THE CRIMEA

Lobatscheva S.V.; Smirnova T.N. (2006)

Four successive assemblages of Berriasian brachiopods distinguished for the first time in the Crimea are correlated with concurrent subdivisions of the ammonoid scale. Berriasian brachiopods are represented by 44 species ...
IMMISCIBLE SILICATE LIQUID PARTITION COEFFICIENTS: IMPLICATIONS FOR CRYSTAL-MELT ELEMENT PARTITIONING AND BASALT PETROGENESIS

Veksler I.V.; Dorfman A.M.; Dingwell D.B.; Danyushevsky L.V.; Jakobsen J.K. (2006)

This study investigates partitioning of elements between immiscible aluminosilicate and borosilicate liquids using three synthetic mixtures doped with 32 trace elements. In order to get a good spatial separation of immiscible ...
ON AGE OF NAZIMOVSKAYA AND KHASAN FORMATIONS IN THE PALEOGENE SUCCESSION OF SOUTHWESTERN PRIMOR'E

Pavlyutkin B.I.; Petrenko T.I.; Nevolina S.I.; Kutub-Zade T.K. (2006)

Materials of previous studies and new original geological and paleobotanic data are used to substantiate synchronism (late Eocene) of the Khasan and Nazimovskaya formations, the key stratigraphic units of the Paleogene in ...
LASER REMOTE SENSING CALIBRATION OF OCEAN COLOR SATELLITE DATA

Barbini R.; Colao F.; Fantoni R.; Fiorani L.; Palucci A.; Kolodnikova N.V. (2006)

One of the main interests of Earth observation is the study of the biogeochemical cycles which take place in the world ocean: in fact, those processes dramatically affect the climatic equilibrium of our planet. For this ...

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