Геология России: Recent submissions

Now showing items 1561-1580 of 40834

DIMENSIONAL PARAMETERS OF COLUMNAR STROMATOLITES AS A RESULT OF STROMATOLITE ECOSYSTEM EVOLUTION

Raaben M.E. (2006)

Columnar stromatolites representing more than a half of species described in Precambrian stromatolite assemblages reveal a regular trend of size variations during the Proterozoic and Early Paleozoic. Their dimensional ...
WATER-RELATED IR CHARACTERISTICS IN NATURAL FIBROUS DIAMONDS

Zedgenizov D.A.; Shatsky V.S.; Shiryaev A.A.; Kagi H. (2006)

Water-related features were studied using infrared absorption spectroscopy in fibrous diamonds with micro-inclusions. Both OH-stretching and HOH-bending vibrations were observed. The lack of correlation between the intensities ...
COLLISION OF THE KRONOTSKIY ARC AT THE NE EURASIA MARGIN AND STRUCTURAL EVOLUTION OF THE KAMCHATKA-ALEUTIAN JUNCTION

Alexeiev D.V.; Tsukanov N.V.; Gaedicke C.; Freitag R. (2006)

Structural evolution of the Kamchatka-Aleutian junction area in late Mesozoic and Tertiary was generally controlled by (1) the processes of subduction in Kronotskiy and Proto-Kamchatka subduction zones and (2) collision ...
REAL EUKARYOTES AND PRECIPITATES FIRST FOUND IN THE MIDDLE RIPHEAN STRATOTYPE, SOUTHERN URALS

Sergeev V.N.; Seong-Joo L. (2006)

New investigations considerably extended taxonomic list of microbiotas from cherts of the Kataskin and Revet subformations of the Avzyan Formation in the Yurmata Group, the Middle Riphean stratotype in southern Urals. It ...
DOES KAMCHATKA BELONG TO NORTH AMERICA? AN EXTRUDING OKHOTSK BLOCK SUGGESTED BY COASTAL NEOTECTONICS OF THE OZERNOI PENINSULA, KAMCHATKA, RUSSIA

Pedoja K.; Bourgeois J.; Higman B.; Pinegina T. (2006)

This paper addresses one part of an outstanding tectonic problem regarding the nature of the plate boundary between Eurasia and North America in northeastern Russia. In this region, the northwestern corner of the Pacific ...
EARLY PROTEROZOIC SYN-AND POSTCOLLISION GRANITES IN THE NORTHERN PART OF THE BAIKAL FOLD AREA

Larin A.M.; Sal'nikova E.B.; Yakovleva S.Z.; Kovach V.P.; Kotov A.B.; Makar'ev L.B. (2006)

Early Proterozoic granitoids are of a limited occurrence in the Baikal fold area being confined here exclusively to an arcuate belt delineating the outer contour of Baikalides, where rocks of the Early Precambrian basement ...
ФОРМИРОВАНИЕ КОЛЧЕДАННЫХ ЗАЛЕЖЕЙ В УСЛОВИЯХ КОНВЕКТИВНО-РЕЦИКЛИНГОВОЙ МОДЕЛИ

Абрамова Е.Е. (2006)

Конвективно-рециклинговая модель рудогенеза, изначально разработанная для субмаринныхместорождений колчеданного семейства, в дальнейшем оказалась применимой и к другим месторождениям.
DISCOVERY OF WHITLOCKITE IN MANTLE XENOLITHS: INFERENCES FOR WATER- AND HALOGEN-POOR FLUIDS AND TRACE ELEMENT RESIDENCE IN THE TERRESTRIAL UPPER MANTLE

Ionov D.A.; Hofmann A.W.; Gurenko A.A.; Hellebrand E.; Merlet C.; Montagnac G.; Gillet P.; Prikhodko V.S. (2006)

Chemical analyses and Raman micro-spectroscopy have identified whitlockite (water- and halogen-free phosphate) in mantle xenoliths from Siberia. Whitlockite has not previously been reported from terrestrial mantle-derived ...
BEHAVIOR OF H2O MOLECULES IN THE CHANNELS OF NATROLITE AND SCOLECITE: A RAMAN AND IR SPECTROSCOPIC INVESTIGATION OF HYDROUS MICROPOROUS SILICATES

Kolesov B.A.; Geiger C.A. (2006)

Single-crystal polarized Raman spectra (80 to 4000 cm-1 at 4 ≤ T ≤ 700 K) and powder IR spectra (1500 to 4000 cm-1 at 50 < T < 300 K) were measured for two microporous zeolites natrolite, Na16[Al16Si24 O80]·16H2O, and ...
FORAMINIFERS AND RADIOLARIANS ACROSS THE ALBIAN-CENOMANIAN AND CENOMANIAN-TURONIAN BOUNDARIES (NORTHERN PERI-TETHYS)

Vishnevskaya V.S.; Bragina L.G.; Gorbachik T.N.; Kopaevich L.F. (2006)

Changes in morphological diversity and taxonomic composition of late Albian-early Turonian foraminiferal and radiolarian assemblages from the northern Peri-Tethys are considered. Several stages are defined in evolution of ...
PRECIOUS METAL AND TELLURIDE MINERALOGY OF LARGE VOLCANIC-HOSTED MASSIVE SULFIDE DEPOSITS IN THE URALS

Vikentyev I.V. (2006)

The study focuses on the mode of occurrence of Au, Ag and Te in ores of the Gaisk, Safyanovsk, Uzelginsk and other volcanic-hosted massive sulfide (VHMS) deposits in the Russian Urals. Minerals containing these elements ...
A LOW-TEMPERATURE HEAT-CAPACITY STUDY OF SYNTHETIC ANHYDROUS MG-CORDIERITE (MG2AL4SI5O18)

Paukov I.E.; Kovalevskaya Y.A.; Rahmoun N.-S.; Geiger C.A. (2006)

The heat capacity of synthetic anhydrous Mg-cordierite (Mg2Al4Si5O18) was measured using adiabatic calorimetry between 6 and 300 K. Mg-cordierite was synthesized from a glass of stoichiometric cordierite composition at ...
TRACE ELEMENT AND SR-PB-ND-HF ISOTOPE EVIDENCE FOR ANCIENT, FLUID-DOMINATED ENRICHMENT OF THE SOURCE OF ALDAN SHIELD LAMPROITES

Davies G.R.; Stolz A.J.; Mahotkin I.L.; Nowell G.M.; Pearson D.G. (2006)

A phase of Mesozoic extension associated with the termination of continental collision at the southern margin of the Aldan Shield produced ultrabasic lamproites in a discontinuous belt 500 km long and ~150 km wide. The ...
PRESSURE EFFECTS ON THE REDUCED PARTITION FUNCTION RATIO FOR HYDROGEN ISOTOPES IN WATER

Polyakov V.B.; Horita J.; Cole D.R. (2006)

We have developed a simple, yet accurate theoretical method for calculating the reduced isotope partition function ratio (RIPFR) for hydrogen of water at elevated pressures. This approach requires only accurate equations ...
NANOMETER-SIZE P/K-RICH SILICA GLASS (FORMER MELT) INCLUSIONS IN MICRODIAMOND FROM THE GNEISSES OF KOKCHETAV AND ERZGEBIRGE MASSIFS: DIVERSIFIED CHARACTERISTICS OF THE FORMATION MEDIA OF METAMORPHIC MICRODIAMOND IN UHP ROCKS DUE TO HOST-ROCK BUFFERING

Hwang S.-L.; Chu H.-T.; Yui T.-F.; Shen P.; Schertl H.-P.; Liou J.G.; Sobolev N.V. (2006)

Nanometer-size P/K-rich silica glass (former melt) inclusions were identified within metamorphic microdiamonds from garnets of ultrahigh-pressure (UHP) gneisses of the Kokchetav and the Erzgebirge massifs by analytical ...
THE CAMPANIAN-MAASTRICHTIAN STAGE BOUNDARY IN THE AKTULAGAI SECTION (NORTH CASPIAN DEPRESSION)

Naidin D.P.; Beniamovski V.N. (2006)

Distribution of belemnites and benthic foraminifers in the Campanian-Maastrichtian boundary layers of the Aktulagai section, one of Upper Cretaceous reference sections in the east of the European paleobiogeographic region ...
ГЕОЛОГО-ГЕНЕТИЧЕСКАЯ МОДЕЛЬ ФОРМИРОВАНИЯ РУД МЕДНО-ПОРФИРОВЫХ МЕСТОРОЖДЕНИЙ АЛМАЛЫКСКОГО РУДНОГО РАЙОНА, УЗБЕКИСТАН

Туресебеков А.Х.; Василевский Б.Б. (2006)

Изучение рудных формаций, взаимоотношений их с магматическими образованиями, минералогических, геохимических особенностей и характера метасоматических изменений, проведенное под руководством Х.М.Абдуллаева, позволило ...
TE AND SE MINERALOGY OF THE HIGH-SULFIDATION KOCHBULAK AND KAIRAGACH EPITHERMAL GOLD TELLURIDE DEPOSITS (KURAMA RIDGE, MIDDLE TIEN SHAN, UZBEKISTAN)

Plotinskaya O.Yu.; Kovalenker V.A.; Seltmann R.; Stanley C.J. (2006)

The Late Paleozoic Kochbulak and Kairagach deposits are located on the northern slope of the Kurama Ridge, Middle Tien Shan, in the same volcanic structure and the same ore-forming system. Au-Ag-Cu-Bi-Te-Se mineralization ...
REDOX STATE OF ECLOGITES AND PERIDOTITES FROM SUB-CRATONIC UPPER MANTLE AND A CONNECTION WITH DIAMOND GENESIS

Simakov S.K. (2006)

Pressure-Temperature- fO2 conditions and fluid compositions estimated for mineral parageneses from inclusions in diamonds, diamond-bearing and diamond-free xenoliths using a garnet-clinopyroxene-silica oxygen barometer ...
NEW DATA ON UPPER KIMMERIDGIAN-TITHONIAN BIOSTRATIGRAPHY AND AMMONITES OF THE EASTERN CRIMEA

Arkad'ev V.V.; Rogov M.A. (2006)

Based on ammonites, Upper Kimmeridgian sediments are first established in the Crimean Mountains. The Kimmeridgian-Tithonian boundary recognizable in a continuous section is placed inside the Dvuyakomaya Formation of uniform ...

Now showing items 1561-1580 of 40834

Search DSpace

Browse

All of DSpace
This Community

Recently added

Геология России: Recent submissions

Search DSpace

Browse

All of DSpace

This Community

My Account