Геология России: Recent submissions

Now showing items 181-200 of 41010

IMBRICATE THRUST STRUCTURE OF THE NORTHWESTERN CAUCASUS

Popkov V.I. (2006)

Many geologists suggest a determinative role of folding in the formation of the Northwestern Caucasus structure. Mapped or drilled thrusts are considered minor structures complicating steep fold limbs. Moreover, they are ...
MAGNETOCHRONOLOGY OF THE CLIMATIC OPTIMUM AT THE EARLY-MIDDLE MIOCENE TRANSITION IN NORTHEAST RUSSIA

Shilo N.A.; Minyuk P.S. (2006)

The Miocene was characterized by sharp climatic fluctuations. Among them, the most significant (for high latitudes) fluctuations are termed climatic optimums I, II, and III. Optimum I, which marks the Early–Middle Miocene ...
ESTIMATION OF MAGNITUDES OF OLD EARTHQUAKES IN THE GORNYI ALTAI REGION BASED ON ANALYSIS OF SEISMOGRAVITATIONAL DISLOCATIONS

Nepop R.K.; Agatova A.R. (2006)

Estimation of the magnitudes of old earthquakes is a necessary condition for assessing seismic hazards and for seismotectonic zonation of active regions of the Earth. In this paper, we propose a new approach to the estimation ...
CHISTYAKOVAITE, A NEW MINERAL AL(UO2)2(ASO 4)2(F,OH) · 6.5H2O

Chukanov N.V.; Sidorenko G.A.; Naumova I.S.; Zadov A.E.; Kuz'min V.I. (2006)

New mineral, hydrous aluminum uranylarsenate, was found during detailed study of uranium mineral samples taken at the Bota-Burum deposit (southern Kazakhstan) by E.V. Kopchenova in the 1950s and stored at the Mineralogical ...
NEW DATA ON BOTTOM GEOMORPHOLOGY OF THE SEA OF AZOV

Matishov G.G. (2006)

In marine basins, sedimentation and zoobenthos distribution are determined by their bottom topography and bathymetry. Only general information is available for shelf geomorphology of the Sea of Azov. Because of the absence ...
STRUCTURAL FEATURES AND NMR195PT SPECTROSCOPY OF COOPERITE MONOCRYSTALS (NATURAL PTS)

Ivanov A.V.; Palazhchenko V.I.; Strikha V.E.; Antzutkin O.N.; Forsling W. (2006)

Cooperite (natural PtS)—a platinum group mineral—is a main platinum source in Cu–Ni sulfide ores. Cooperite commonly crystallizes in two morphological modifications: (i) irregular grains; (ii) less frequent micrometric and ...
SOURCE MECHANISM OF THE KALININGRAD EARTHQUAKE ON SEPTEMBER 21, 2004

Nikonov A.A. (2006)

The Kaliningrad earthquake on September 21, 2004 was a rare but very significant example of the potential of moderate earthquakes in the East European Platform. The following three shocks were instrumentally recorded with ...
THE NANOBLOCK STRUCTURE OF NATURAL ISOFERROPLATINUM (PT3FE) AND PROBLEM OF QUASICRYSTALLINE STATE OF SOME PLATINUM GROUP MINERALS

Distler V.V.; Kryachko V.V.; Yudovskaya M.A.; Bityutskaya L.A.; Grechkina M.V.; Bogatikov E.V. (2006)

Parquet-type nanoblock structure of isoferroplatinum crystals was first discovered with atomic force microscopy (AFM). Fourier and wavelet transforms were applied to the AFM topographic data to reveal the characteristic ...
NATIVE MINERALS AND INTERMETALLIDES OF NOBLE AND NONFERROUS METALS IN SEDIMENTS OF THE MARKOV DEEP, MID-ATLANTIC RIDGE

Bortnikov N.S.; Mochalov A.G.; Cherkashev G.A. (2006)

The study of modern mineralization in spreading zones of the World Ocean is mainly focused on the precipitation of minerals from hydrothermal fluids and the consequent formation of sulfide edifices. However, the study of ...
MINERAL MICROINCLUSIONS IN CUBIC DIAMONDS FROM THE YAKUTIAN DEPOSITS BASED ON ANALYTICAL ELECTRON MICROSCOPY DATA

Titkov S.V.; Gorshkov A.I.; Solodova Yu.P.; Ryabchikov I.D.; Magazina L.O.; Sivtsov A.V.; Gasanov M.D.; Sedova E.A.; Samosorov G.G. (2006)

In the course of this study, we examined whitish gray crystals from the Yubileinaya kimberlite pipe (samples 1 and 2), gray and greenish yellow crystals from the Aikhal pipe (samples 3 and 4), black crystals from the ...
HIGH-TEMPERATURE CARBONATITE MELT AND ITS INTERRELATIONS WITH ALKALINE MAGMAS OF THE DUNKEL'DYK COMPLEX, SOUTHEASTERN PAMIRS

Solovova I.P.; Girnis A.V.; Ryabchikov I.D.; Simakin S.G. (2006)

This paper is aimed at studying the inclusions (microportions of mineral-forming media in minerals) in clinopyroxenes from a leucite fergusite sample taken from a diatreme of the Dunkel’dyk alkaline complex in the southeastern ...
EVIDENCE OF NONLINEARITY OF THE CHANDLER WOBBLE IN THE EARTH'S POLE MOTION

Ivashchenko N.N.; Sidorenkov N.S.; Sonechkin D.M. (2006)

It is well known that rotational motions with annual and Chandler periods dominate in the dynamics of the location of the Earth’s poles. The nature of the Chandler wobble is not clear. It is most frequently attributed to ...
GEOCHEMICAL ACTIVITY OF FAULTS IN THE BAIKAL RIFT ZONE (MERCURY, RADON, AND THORON)

Koval P.V.; Udodo Yu.N.; Yasenovskii A.A.; Andrulaitis L.D.; San'kov V.A. (2006)

Geochemically active faults are accompanied by emission of matter into the host rocks and atmosphere. In particular, they include active faults of volcanic and rift zones accompanied by elevated heat flow, volcanism, thermal ...
STAGES OF GEODYNAMIC REARRANGEMENTS OF THE EASTERN MARGIN OF THE EURASIAN CONTINENT IN THE CENOZOIC: THE AMUR RIVER-SEA OF THE OKHOTSK REGION

Filatova N.I. (2006)

It is widely believed in literature that the convergent boundary between the Pacific Plate and the eastern margin of the Eurasian continent permanently existed through the Late Mesozoic and Cenozoic. However, new data in ...
WATER INCLUSIONS IN LECHATELIERITE FROM IMPACT FLUIDIZITES OF THE POPIGAI ASTROBLEME

Vishnevsky S.A.; Gibsher N.A. (2006)

Endogenic fluidizites and tuffizites have been known for a long time and are rather abundant in the Earth’s crust. They are formed by emplacement of hot fluid–melt mixtures under a high excess pressure. Such rocks have not ...
EARLY PROTEROZOIC AGE OF THE TYRKANDIN FAULT ZONE, THE ALDAN SHIELD: U-PB DATING OF FRAGMENTS OF SINGLE ZIRCON GRAINS

Sal'nikova E.B.; Kotov A.B.; Pertsev N.N.; Yakovleva S.Z.; Glebovitsky V.A.; Fedoseenko A.M.; Kazansky V.I.; Plotkina Yu.V. (2006)

This paper is devoted to geochronological study of the Tyrkandin fault zone, which is one of the largest sutures in the eastern Aldan Shield. This 20-km-wide zone extends more than 500 km. It is characterized by positive ...
PALEOPROTEROZOIC GABBROANORTHOSITES OF THE SELENGA-STANOVOI SUPERTERRANE, SOUTHERN FRAMING OF THE SIBERIAN CRATON

Buchko I.V.; Larin A.M.; Velikoslavinskii S.D.; Sorokin A.A.; Sal'nikova E.B.; Kotov A.B.; Sorokin A.P.; Yakovleva S.Z. (2006)

The Selenga–Stanovoi Superterrane of the southern framing of the Siberian Craton includes numerous layered different (in genesis and composition) ultramaficmafic and gabbroanorthosite massifs (Kengurak–Sergachi, Lukinda, ...
PHYSICOCHEMICAL PARAMETERS OF THE OLDEST BONINITE MELTS

Simonov V.A.; Kovyazin S.V.; Sklyarov E.V.; Perelyaev V.I. (2006)

Ophiolites of the southeastern Sayan region, the oldest formations in Central Asia (1020 Ma), include unique information on early stages of Paleoasian Ocean evolution. The presence of boninites in the ophiolites indicates ...
A NEW TYPE OF DOUBLE-DIFFUSIVE INSTABILITY

Ingel L.Kh. (2006)

Welander suggested the possibility of existence of a new (unstudied) type of convective instability in a two-component medium, in particular, in seawater stratified both in temperature and admixture (salt) concentration. ...
CAUSES OF VARIATIONS OF ND-O ISOTOPE RATIOS OF GRANITOIDS IN THE TUVA-MONGOLIA MICROCONTINENT AND ITS EARLY CALEDONIAN FRAMING

Krylov D.P.; Kozakov I.K.; Glebovitsky V.A.; Fedoseenko A.M. (2006)

Variations of neodymium and oxygen isotopic compositions of postcollision granitoids in the Tuva–Mongolia microcontinnet (TMM) is determined largely by different compositions of magma sources due to the mixing of two ...

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