Distribution functions of probabilities of cyclones and anticyclones from 1952 to 2000: An instrument for the determination of global climate variations     

G. S. Golitsyn  I. I. Mokhov  M. G. Akperov  M. Yu. Bardin 《Doklady Earth Sciences》2007,413(2):324-326

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New data on paleontological characteristic of the Oligocene in the Il’pinskii Peninsula, northeastern Kamchatka     

A. Yu. Gladenkov  Yu. B. Gladenkov 《Stratigraphy and Geological Correlation》2007,15(2):231-235

Fossil diatom algae first found in the Paleogene marine succession (Alugivayam Formation) of the Il’pinskii Peninsula, northeastern Kamchatka are studied, and new data on molluscan assemblages from the same sequences are presented. Some of the diatom forms identified suggest the Oligocene age of their host deposits. This is consistent with earlier inference from benthic groups of marine organisms.  相似文献   

A RATAN-600 Zenith-Field sky survey. Catalog of radio sources     

N. N. Bursov  Yu. N. Pariĭskiĭ  E. K. Maĭorova  M. G. Mingaliev  A. B. Berlin  N. A. Nizhel’skiĭ  I. A. Glushkova  T. A. Semenova 《Astronomy Reports》2007,51(3):197-214

A catalog of radio sources detected in a deep RATAN-600 survey is presented. The catalog was obtained in the region 0^h ≤ RA_2000.0 ≤ 24^h, Dec_2000.0 = 41°30′42″ ± 2′, at the declination of the bright radio source 3C 84. There were nine sessions of multi-wavelength observations at wavelengths λ = 1–55 cm, and more than 300 daily scans were accumulated at each wavelength. This is the first stage in the reduction of an extensive database accumulated by the Cosmological Gene Project. The RATAN-600 Zenith Field (RZF) catalog was obtained at the central wavelength of 7.6 cm, and contains 437 radio sources, virtually all of which have been identified with NVSS objects. Most of the flux densities for the catalog sources are above the 5σ level. Noise from faint (mainly new) background sources at a level of about 0.8 mJy has been detected. The minimum flux density of the catalog, 2.5 mJy, is comparable to the flux-density linit of the NVSS catalog. The catalog is more than 80% complete for sources with flux densities >3 mJy.  相似文献   

Textural-structural,mineralogical, isotopic,and age characteristics of Jurassic terrigenous rocks of the northwestern Caucasus (the Belaya River section)     

Yu. V. Kushcheva  I. V. Latysheva  D. I. Golovin  Yu. O. Gavrilov 《Lithology and Mineral Resources》2007,42(3):257-267

Results of the comprehensive study of structural, lithological, mineralogical, and isotopic characteristics of Lower Jurassic rocks exposed in the Belaya River valley (Adygeya) in meganticlinorium of the Greater Caucasus are presented. Deformation microstructures were studied. Lithological and textural-structural changes in sequences related to intense secondary transformations should affect the state of isotopic systems of rocks. To reveal basic trends in the evolution of isotopic systems, investigation using the K-Ar method was carried out. Clay fraction (less than 1 μm) separated from rocks and bulk samples were analyzed. Cleavage development, approximate value of rock contraction, and isotopic characteristics are compared with the available data on alteration of clay mineral assemblages. Relationship between the degree of rock deformation at the microlevel and calculated K-Ar ages has been established. K-Ar systems of clayey rocks indicate the age of cleavage formation and correspond to the Bajocian-Bathonian contraction period.  相似文献   

Lower carboniferous carbonate deposits in the Bol’shaya Karaganka river basin (Southern Urals)     

Yu. G. Krasnoyarova  A. V. Tevelev  E. V. Yakovishina  E. L. Zaitseva 《Moscow University Geology Bulletin》2007,62(2):123-126

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Corundum-group minerals in rocks of the Khibiny alkaline pluton,Kola Peninsula     

Yu. A. Mikhailova  N. G. Konopleva  V. N. Yakovenchuk  G. Yu. Ivanyuk  Yu. P. Men’shikov  Ya. A. Pakhomovsky 《Geology of Ore Deposits》2007,49(7):590-598

Five minerals of the corundum group have been identified in the Khibiny pluton with certainty. Corundum proper and karelianite occur only in hornfels after volcanic and sedimentary rocks. Xenoliths of hornfels mark the ring faults that bound foidalite within the field of foyaite. Hematite occurs in hydrothermally altered nepheline syenite and crosscutting hydrothermal veins related to the ring faults. Minerals of the ilmenite-pyrophanite series are present in all rocks of the pluton, including veins. Accessory ilmenite in foyaite varies from the manganese variety and pyrophanite in the inner and outer parts of the pluton to manganese-free ilmenite in zone of the Main Ring Fault. In xenoliths of volcanic rocks and alkaline ultramafic rocks, ilmenite is enriched in magnesium. The zoning in distribution of the above-mentioned minerals and the character of variation in their compositions from margins of the pluton to its center are consistent with the petrochemical zoning formed as a result of foyaite alteration of near ring faults.  相似文献   

Glacial refugium of <Emphasis Type="Italic">Pinus pumila</Emphasis> (Pall.) Regel in northeastern Siberia     

N. A. Shilo  A. V. Lozhkin  P. M. Anderson  T. A. Brown  A. Yu. Pakhomov  T. B. Solomatkina 《Doklady Earth Sciences》2007,412(1):122-124

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Principal differences in the structural position of earthquake epicenters on land in the southern Magadan region and on the shelf of the Sea of Okhotsk near Magadan     

N. A. Shilo  Yu. Ya. Vashchilov  L. Yu. Kalinina 《Doklady Earth Sciences》2007,413(3):497-500

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Structure of ore fields and deposits: Current status and outlook for further development     

Yu. G. Safonov  G. I. Gorbunov  A. A. Pek  A. V. Volkov  T. M. Zlobina  G. G. Kravchenko  E. P. Malinovsky 《Geology of Ore Deposits》2007,49(5):343-371

The current status of investigations of the structure of ore fields and deposits in Russia is considered. The importance of traditional lines of research in this field and the great body of information acquired is emphasized. The changes in ideas of geodynamic and tectonic crustal evolution have made it necessary to alter concepts of the geological and structural position of ore fields and deposits. New challenges are caused by these changes and progress in the knowledge of ore deposits and the depth of their formation, as well as geodynamic, tectonophysical, and hydrodynamic processes in ore-bearing crustal blocks. The results of hydrodynamic modeling of deposit formation controlled by deeply penetrating fault zones are discussed. Various relationships between hydrodynamic and structural factors in ore formation are considered.  相似文献   

Interaction of elemental gold surface with fluids: A key to understanding mechanisms of recondensation and mobilization of gold under endogenic and exogenic conditions     

Yu. V. Shchegol&#;kov  V. L. Tauson  V. Ya. Medvedev  M. V. Pochekunina  L. A. Ivanova  S. V. Lipko 《Doklady Earth Sciences》2007,413(2):244-247

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