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Now showing items 41-60 of 41505

P - AND S-VELOCITY IMAGES OF THE LITHOSPHERE-ASTHENOSPHERE SYSTEM IN THE CENTRAL ANDES FROM LOCAL-SOURCE TOMOGRAPHIC INVERSION

Koulakov I.; Sobolev S.V.; Asch G. (2006)

About 50000 P and S arrival times and 25000 values of t* recorded at seismic arrays operated in the Central Andes between 20°S and 25°S in the time period from 1994 to 1997 have been used for locating more than 1500 deep ...
ZIRCON THERMOMETRY AND U-PB ION-MICROPROBE DATING OF THE GABBROS AND ASSOCIATED MIGMATITES OF THE VARISCAN TOLEDO ANATECTIC COMPLEX, CENTRAL IBERIA

Bea F.; Montero P.G.; Talavera C.; Molina J.F.; Scarrow J.H.; Gonzalez-Lodeiro F.; Whitehouse M.J.; Zinger T. (2006)

In the Central Iberian Zone there are several large thermal domes in which small bodies of ultramafic, mafic and intermediate rocks appear intimately associated with crustal granites and migmatites. The closest spatial ...
A CERATOPSIAN DINOSAUR PSITTACOSAURUS SIBIRICUS FROM THE EARLY CRETACEOUS OF WEST SIBERIA, RUSSIA AND ITS PHYLOGENETIC RELATIONSHIPS

Averianov A.O.; Voronkevich A.V.; Leshchinskiy S.V.; Fayngertz A.V. (2006)

Psittacosaurus sibiricus from the Aptian-Albian Ilek Formation at Shestakovo, Kemerovo Province, West Siberia, is represented by two almost complete adult skeletons, several associated groups of bones and numerous isolated ...
EXSOLUTION TEXTURES OF ORTHOPYROXENE AND CLINOPYROXENE IN HIGH-GRADE BIF OF THE VORONEZH CRYSTALLINE MASSIF: EVIDENCE OF ULTRAHIGH-TEMPERATURE METAMORPHISM

Fonarev V.I.; Pilugin S.M.; Savko K.A.; Novikova M.A. (2006)

Archaean banded iron formation (BIF) of the Voronezh Crystalline Massif (VCM) contains coexisting clino- and orthopyroxenes with exsolution textures. The pyroxene in the VCM BIF is found in two generations, with only the ...
ISOTOPIC SIGNATURES OF DEPOSITION AND TRANSFORMATION OF LOWER CAMBRIAN SALIFEROUS ROCKS IN THE IRKUTSK AMPHITHEATER: COMMUNICATION 2. STRONTIUM ISOTOPIC COMPOSITION

Vinogradov V.I.; Bujakaite M.I.; Kuleshov V.N.; Pokrovskii B.G.; Belenitskaya G.A.; Minaeva M.A. (2006)

Rb-Sr data were obtained for different Lower Cambrian rocks from boreholes Bel'sk and Zhigalovo drilled in the Irkutsk amphitheater. Shales in the lower part and insoluble residue of marls throughout the entire (up to 2 ...
CLASTIC HEAVY MINERAL ASSEMBLAGES IN PERMIAN-MESOZOIC ACCRETIONARY CHERTY AND SILICEOUS-CLAYEY COMPLEXES OF SIKHOTE ALIN

Filippov A.N.; Nechaev V.P.; Ekimova N.I. (2006)

The paper presents results of the study of assemblages of clastic heavy minerals and geochemical features of some assemblages in several Permian-Mesozoic cherty and siliceous-clayey sequences of Sikhote Alin. They are ...
SOUTH PRIMORYE, FAR EAST RUSSIA-A KEY REGION FOR GLOBAL PERMIAN CORRELATION

Kotlyar G.V.; Zhuravlev A.V.; Belyansky G.C.; Burago V.I.; Nikitina A.P.; Zakharov Y.D. (2006)

Significant differences between faunal and floral associations existing in different paleogeographic realms in the Kungurian-Late Permian interval make it difficult to correlate the Permian deposits of the world. Resolving ...
PARTIZANSKY BASE-METAL SKARN DEPOSIT, DAL'NEGORSK ORE DISTRICT, RUSSIA: STAGES OF ORE FORMATION, MINERAL ASSEMBLAGES, AND TYPOMORPHISM OF FAHLORE

Simanenko L.F. (2006)

As indicated by mineralogical, geochemical, and structural-textural data, the base-metal skarn ore at the Partizansky deposit was formed during two stages (base-metal skarn and silver-sulfosalt), which were separated by ...
MICROINCLUSIONS IN DIAMONDS OF OCTAHEDRAL HABIT FROM KIMBERLITES OF SHANDONG PROVINCE, EASTERN CHINA

Gorshkov A.I.; Titkov S.V.; Ryabchikov I.D.; Magazina L.O.; Bao Y.N. (2006)

Microinclusions in octahedral diamond crystals from kimberlites of Shandong Province, eastern China, have been studied with analytical scanning electron microscopy. Native iron, tungsten, and lead; Fe-Cr intermetallic ...
MODEL PARAMETER ESTIMATION EXPERIMENT (MOPEX): AN OVERVIEW OF SCIENCE STRATEGY AND MAJOR RESULTS FROM THE SECOND AND THIRD WORKSHOPS

Duan Q.; Schaake J.; Andréassian V.; Oudin L.; Franks S.; Goteti G.; Gupta H.V.; Gusev Y.M.; Nasonova O.N.; Habets F.; Noilhan J.; Hall A.; Hay L.; Leavesley G.; Hogue T.; Huang M.; Liang X.; Sorooshian S.; Wagener T.; Wood E.F.et al. (2006)

The Model Parameter Estimation Experiment (MOPEX) is an international project aimed at developing enhanced techniques for the a priori estimation of parameters in hydrologic models and in land surface parameterization ...
A HAWAIIAN BEGINNING FOR THE ICELAND PLUME: MODELLING OF RECONNAISSANCE DATA FOR OLIVINE-HOSTED MELT INCLUSIONS IN PALAEOGENE PICRITE LAVAS FROM EAST GREENLAND

Nielsen T.F.D.; Turkov V.A.; Kogarko L.N.; Solovova I.P.; Ryabchikov I.D. (2006)

Compositions of parental and primary melts are modelled for olivine-hosted melt inclusions in three, Palaeogene, proto-Iceland plume picrite samples from East Greenland. The samples represent three stages in the magmatic ...
SPECIFIC FEATURES OF THE MINERAL COMPOSITION OF TITANIUM-ZIRCONIUM PLACERS IN RUSSIA

Levchenko E.N. (2006)

Specific features of the mineral composition of economically promising titanium-zirconium placers in Russia are analyzed. Generalization of the data made it possible to classify titanium-zirconium deposits with respect to ...
SEISMIC STRATIGRAPHY AND SEDIMENTARY PROCESSES ON THE KURILE BASIN NORTHERN SLOPE (OKHOTSK SEA)

Karp B.Ya.; Karnaukh V.N.; Baranov B.V.; Dozorova K.A. (2006)

The Kurile Basin in the Okhotsk Sea, northwestern Pacific, is a back-arc basin located west of the Kurile Island Arc. Cenozoic sedimentation on the Kurile Basin northern slope and on the Academy of Science Rise was studied ...
PRIMARY MAGMAS AT OLDOINYO LENGAI: THE ROLE OF OLIVINE MELILITITES

Keller J.; Zaitsev A.N.; Wiedenmann D. (2006)

The paper describes olivine melilitites at Oldoinyo Lengai, Tanzania, and from tuff cones from the Tanzanian rift valley in the vicinity of Oldoinyo Lengai. Oldoinyo Lengai is the only active carbonatite volcano and is ...
AN OVERVIEW OF PERMIAN MARINE STRATIGRAPHY AND BIOSTRATIGRAPHY OF MONGOLIA

Manankov I.N.; Shi G.R.; Shen S.Z. (2006)

This paper summarizes the spatial distribution, stratigraphical divisions and biostratigraphical zonation schemes of Permian marine deposits in Mongolia. Where appropriate, correlations of the various Permian marine ...
CONTINENTAL WEATHERING IN THE EARLY PRECAMBRIAN: SPECIFIC FEATURES OF MINERAL TRANSFORMATIONS AND COMPOSITION OF SUPERGENE SOLUTIONS

Alfimova N.A.; Matrenichev V.A. (2006)

The paper presents a detailed description of the geological structure, mineralogy, and chemical composition of the Archean weathering profile of granitoids in the Baltic Shield. Based on model calculations, the primary ...
MURATAITE AS A UNIVERSAL MATRIX FOR IMMOBILIZATION OF ACTINIDES

Laverov N.P.; Yudintsev S.V.; Omel'yanenko B.I.; Nikonov B.S.; Stefanovsky S.V. (2006)

A new variety of matrices based on synthetic phases whose structure is close to that of murataite (a natural mineral) is proposed for immobilization of nuclear wastes. Murataite is Na, Ca, REE, Zn, and Nb titanate with a ...
COMPARISON OF THE GEOCHEMICAL FEATURES OF ORE-BEARING HORIZONS AT YOUNG AND ANCIENT HYDROGENIC URANIUM DEPOSITS (HYDROTECHNOLOGICAL ASPECTS)

Solodov I.N.; Chertok M.B.; Ganina N.I.; Shulik L.S. (2006)

Geochemical properties of ore-bearing horizons composed of alluvial aluminosilicate terrigenous rocks have been compared at young and ancient hydrogenic uranium deposits. It has been shown that the lithological setting at ...
THE PERMIAN OF THE TRANSBAIKAL REGION, EASTERN RUSSIA: BIOSTRATIGRAPHY, CORRELATION AND BIOGEOGRAPHY

Kotlyar G.V.; Popeko L.I.; Kurilenko A.V. (2006)

Permian deposits in the Transbaikal region within the Mongol-Okhotsk belt and adjacent areas have been studied. The characteristics of the Permian marine and continental formations are documented, and our present understanding ...
ON THE ORIGIN OF MICRORHYTHMIC LAYERING IN ARFVEDSONITE LUJAVRITE FROM THE ILíMAUSSAQ ALKALINE COMPLEX, SOUTH GREENLAND

Bailey J.C.; Sørensen H.; Rose-Hansen J.; Andersen T.; Kogarko L.N. (2006)

Microrhythmic layering is locally developed in agpaitic arfvedsonite lujavrite from the Ilímaussaq alkaline complex, South Greenland. Three-15-cm-thick laminated dark layers alternate with 1-10-cm-thick, light-coloured ...

Now showing items 41-60 of 41505

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