Геология России: Recent submissions

Now showing items 541-560 of 41109

PT FACIES OF ELEMENTARY, HYDROCARBON, AND ORGANIC SUBSTANCES IN THE C-H-O SYSTEM

Marakushev A.A.; Marakushev S.A. (2006)

The substances in the C–H–O system are subdivided into elementary (O2, H2, H2O, C, CO, CO2, CH4) and composite (hydrocarbons and organic compounds) varieties. The composite substances fit into the system of elementary ...
EVIDENCE FROM P-TO-S MANTLE CONVERTED WAVES FOR A FLAT "660-KM" DISCONTINUITY BENEATH ICELAND

Du Z.; Vinnik L.P.; Foulger G.R. (2006)

Iceland is the type example of a ridge-centered hotspot. It is controversial whether the seismic anomaly beneath it originates in the lower mantle or the upper mantle. Some recent studies reported that the 660-km discontinuity ...
THE MALKHAN GRANITE-PEGMATITE SYSTEM

Zagorsky V.Ye.; Peretyazhko I.S. (2006)

The Malkhan granite–pegmatite system located in Central Transbaikalia, in the southwestern portion of the Malkhan–Yablonovy structure–formational zone of the Caledonian folding comprises two granite massifs (Bolsherechensk ...
EVOLUTION OF THERMAL PLUMES IN THE EARTH'S MANTLE

Ismail-Zadeh A.T.; Krupsky D.P.; Korotkii A.I.; Tsepelev I.A.; Schubert G. (2006)

Thermal plumes in the Earth’s mantle are formed at the core/mantle or upper/lower mantle boundary as a result of gravity instability in the thermal boundary layer (TBL), which can exist at these boundaries. At the same ...
STUDY ON THE MECHANISM OF TRANSPORT OF HEAVY METALS IN SOIL IN WESTERN SUBURB OF BEIJING

Li H.; Wang J.; Teng Ya.; Wang Zh. (2006)

Researchers are paying more and more attention to the adsorption and transport of heavy metals in soil. In this study, laboratory experiments were performed to investigate the characteristics of adsorption and transport ...
EARLY PALEOZOIC GRANITOIDS OF THE AQTAU-DZUNGAR MICROCONTINENT (CENTRAL KAZAKHSTAN)

Degtyarev K.E.; Luchitskaya M.V.; Yakovleva S.Z.; Shatagin K.N.; Kotov A.B.; Sal'nikova E.B.; Plotkina Yu.V.; Fedoseenko A.M. (2006)

The Early Paleozoic is the most interesting and, probably, the least decipherable stage in the evolution of Paleozoides in Kazakhstan. Many Early Paleozoic lithostructural zones of this region are characterized by the wide ...
THE ROLE OF "POSTORE" BASALTOIDS IN THE FORMATION OF ORE-BEARING HYDROTHERMAL SOLUTIONS

Sidorov A.A. (2006)

The study of numerous epithermal deposits ranging in age from Paleozoic (Omolon Craton) to Late Mesozoic (Okhotsk–Chukot volcanogenic belt) and Miocene–Pliocene (Kamchatka) revealed that nearly all ore fields incorporate ...
RELATIONSHIP BETWEEN SALINITY AND THE 3H-3HE AGE IN DEEP WATER OF LAKE BAIKAL

Shimaraev M.N.; Gnatovskii R.Yu.; Blinov V.V.; Zhdanov A.A. (2006)

The application of chemical tracers (freon and helium/tritium ratio) in the 1990s made it possible to date Baikal water at different depths by the timing of its contact with the atmosphere. The age increases with depth ...
SIKHOTE ALIN AS A POSSIBLE PROVINCE OF HYDROTHERMAL SEDIMENTARY GOLD, SILVER, PGE, TIN, ZINC, LEAD, AND TUNGSTEN DEPOSITS

Kazachenko V.T.; Miroshnichenko N.V.; Perevoznikova E.V.; Karabtsov A.A. (2006)

The Triassic–Jurassic carbonaceous sequence of Sikhote Alin contains metalliferous sediments composed of siliceous–rhodochrosite rocks and their metamorphosed analogues (mainly, manganese silicates and aluminosilicates), ...
OXYGEN AND CARBON ISOTOPE VARIATIONS IN OSTRACODE SHELLS FROM LAKE HUBSUGUL (MONGOLIA) AND REGIONAL PALEOCLIMATE CHANGES FOR THE LAST 140 KA

Fedotov A.P.; Poberezhnaya A.E.; Ziborova G.A.; Otinova E.L.; Krapivina S.M.; Fedorin M.A.; Ignat'ev A.V.; Velivetskaya T.A. (2006)

It was established in the middle of the past century that δ18O and δ13C values in biogenic carbonates are correlated with variations in the climate and basin productivity. These variations are most contrasting in the ...
THE TOKSKO-ALGOMIN IGNEOUS COMPLEX OF THE DZHUGDZHUR-STANOVOI FOLDED REGION: AGE AND GEODYNAMIC SETTING

Sal'nikova E.B.; Larin A.M.; Kotov A.B.; Sorokin A.P.; Velikoslavinsky S.D.; Yakovleva S.Z.; Fedoseenko A.M.; Plotkina Yu.V.; Sorokin A.A. (2006)

The Dzhugdzhur–Stanovoi mobile belt (DSMB) represents one of the most intricate tectonic structures of the Siberian Craton.1 In addition to strongly metamorphosed complexes that are traditionally referred to as the Early ...
SM-ND ISOTOPIC SYSTEM IN GARNET MEGACRYSTS FROM THE UDACHNAYA KIMBERLITE PIPE (YAKUTIA) AND PETROGENESIS OF KIMBERLITES

Agashev A.M.; Pokhilenko N.P.; Mal'kovets V.G.; Sobolev N.V. (2006)

The discrete xenocryst association is a significant component of kimberlites. Most kimberlite bodies comprise one or several minerals of the following association: olivine ± garnet ± clinopyroxene ± orthopyroxene ± ilmenite ...
GEOCHEMICAL AND ISOTOPIC FEATURES OF BASALTS IN THE AXIAL MID-ATLANTIC RIDGE NEAR THE MARTIN VAZ FRACTURE ZONE, SOUTH ATLANTIC (19°-20° S)

Skolotnev S.G.; Peive A.A.; Belyatskii B.V. (2006)

One of the essential problems of oceanic tectonics is estimation of the influence of plumes of the deep hot mantle on processes in the axial spreading zone. Areas of two giant (St. Helena and Tristan da Cunha) plumes in ...
A MECHANISM OF TEMPERATURE INHOMOGENEITY FORMATION IN THE OCEAN STRATIFIED BY TEMPERATURE AND SALINITY

Kalashnik M.V.; Ingel L.Kh. (2006)

Seawater is a two-component medium, whose density depends on temperature and concentration of admixture (salinity). Numerous measurements of these variables in the ocean revealed the existence of clearly manifested horizontal ...
INDICATION OF CLIMATE HUMIDITY IN CENTRAL ASIA: EVIDENCE FROM THE GRANULOMETRIC RECORD OF BOTTOM SEDIMENTS IN LAKE KHUBSUGUL (MONGOLIA) FOR THE LAST 450 KA

Fedotov A.P.; Ziborova G.A.; Khabuev A.V.; Otinova E.L.; Kugakolov S.A.; Rodyakin S.V. (2006)

One of the methods used for recording environmental variations in the past is the reconstruction of sedimentation facies conditions based on distribution of the terrigenous component and mineral associations. This kind of ...
EVIDENCE FOR EVOLUTION OF DIAMOND CRYSTALLIZATION MEDIUM IN ECLOGITE XENOLITH FROM THE UDACHNAYA KIMBERLITE PIPE, YAKUTIA

Shatsky V.S.; Ragozin A.L.; Zetgenizov D.A.; Mityukhin S.I. (2006)

The recently obtained data on the superimposed character of diamonds in eclogite xenoliths have compelled us to consider the problem of diamond formation in the upper mantle from a new standpoint. We reported the first ...
GROUNDWATER AND HIGHWAYS INTERACTION: PAST AND PRESENT EXPERIENCES OF HIGHWAY CONSTRUCTION IN SLOVENIA

Brencic M. (2006)

During the planning, designing, construction, operation and maintenance of highways, groundwater can be of important environmental and constructional constraint that can significantly influence the safety operation of ...
PETROGENESIS OF GOLD-BEARING DIORITOIDS OF THE KETKAP-YUNA MAGMATIC PROVINCE, ALDAN SHIELD

Khanchuk A.I.; Polin V.F.; Tsurikova L.S.; Dril S.I.; Sandimirova G.P. (2006)

Significant volumes of subalkaline magmatic rocks in the continental crust of the Aldan Shield raises problems concerning their sources in the context of geodynamics, continental growth, and crustal recycling. Our research ...
BREAKUP OF THE LATE CRETACEOUS ACHAIVAYAM-VALAGIN VOLCANIC ARC IN THE PALEOCENE (TERRANES OF SOUTHERN KORYAKIA AND EASTERN KAMCHATKA)

Chekhovich V.D.; Sukhov A.N. (2006)

The origin and evolution of the Late Cretaceous and Late Cretaceous–Paleogene island arcs, which make up accreted terranes in the present-day structure of southern Koryakia and eastern Kamchatka, have actively been discussed ...
RELATION BETWEEN PORPHYRY DEPOSITS AND THEIR VEIN SATELLITES

Sidorov A.A.; Tomson I.N.; Savva N.E.; Volkov A.V.; Prokof'ev V.Yu.; Kolova E.E. (2006)

Porphyry copper, molybdenum, tin, tin–silver, gold–rare metal and other deposits are commonly accompanied by nonporphyry ore formations that are frequently similar to the entire porphyry group. They are represented by ...

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