Russian Geology and Geophysics

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Kimberlites of the Manchary pipe: a new kimberlite field in Central Yakutia
Russian Geology and Geophysics - Tập 51 - Trang 121-126 - 2010
A.P. Smelov, A.P. Andreev, Z.A. Altukhova, S.A. Babushkina, K.A. Bekrenev, A.I. Zaitsev, E.D. Izbekov, O.V. Koroleva, V.M. Mishnin, A.V. Okrugin, O.B. Oleinikov, A.A. Surnin
Abstract This paper reports new petrographic and mineralogical data on the Manchary kimberlite pipe, which was discovered south of Yakutsk (Central Yakutia) in 2007–2008, 100 km. The pipe breaks through the Upper Cambrian carbonate deposits and is overlain by Jurassic terrigenous rock masses about 100 m thick. It is composed of greenish-gray kimberli...... hiện toàn bộ
Formation of the superdeep South Caspian basin: subsidence driven by phase change in continental crust
Russian Geology and Geophysics - Tập 48 - Trang 1002-1014 - 2007
E.V. Artyushkov
Abstract The large hydrocarbon basin of South Caspian is filled with sediments reaching a thickness of 20–25 km. The sediments overlie a 10–18 km thick high-velocity basement which is often interpreted as oceanic crust. This interpretation is, however, inconsistent with rapid major subsidence in Pliocene-Pleistocene time and deposition of 10 km of se...... hiện toàn bộ
A 50-m laser strainmeter system installed in Transbaikalia: testing results
Russian Geology and Geophysics - Tập 57 - Trang 1768-1774 - 2016
G.I. Dolgikh, S.G. Dolgikh, I.Yu. Rasskazov, V.A. Lugovoy, B.G. Saksin
Abstract We report testing results for a 50-m laser strainmeter installed 300 m under the ground in a mine of PJSC Priargunsky Industrial Mining and Chemical Union (Krasnokamensk) and demonstrate its ability to record microseisms and waves of infrasonic–sonic bandwidths. Processing and interpretation of the collected data provides information about m...... hiện toàn bộ
New data on the structure and age of the terminal Permian strata in the South Verkhoyansk region (northeastern Asia)
Russian Geology and Geophysics - Tập 57 - Trang 282-293 - 2016
A.S. Biakov, Yu.D. Zakharov, M. Horacek, S. Richoz, R.V. Kutygin, Yu.Yu. Ivanov, E.V. Kolesov, A.G. Konstantinov, M.I. Tuchkova, T.I. Mikhalitsyna
Abstract We present new data on the structure and age of the upper Permian strata in the basin of the Setorym River (tributary of the Vostochnaya Khandyga River) in the South Verkhoyansk region, represented by the Imtachan Formation and the lower part of the Nekuchan Formation. Based on the new findings of bivalve fossils from the Intomodesma costatu...... hiện toàn bộ
South-Tunguska petroliferous region: geologic structure and petroleum potential
Russian Geology and Geophysics - Tập 58 - Trang 493-502 - 2017
E.N. Kuznetsova, I.A. Gubin, A.O. Gordeeva, L.N. Konstantinova, S.A. Moiseev, A.E. Kontorovich
Abstract Riphean and Vendian terrigenous complexes are not affected by trap injections within the South-Tunguska petroliferous region and thus can be considered a priority for further prospecting for hydrocarbon accumulations. Although these strata are not exposed with wells and are not characterized by core samples, their wide distribution is proved...... hiện toàn bộ
Placer-forming flows and mudflows as viscous fluids in river valleys
Russian Geology and Geophysics - Tập 56 - Trang 1749-1756 - 2015
A.A. Buiskikh
Abstract The paper is concerned with geologic processes in river valleys, such as the movement of alluvial placers and mudflows, regarded as viscous fluids. The dynamics of distribution of the placer mineral and mud-and-gravel material in a river valley was studied by modeling. Moving material was examined as an independent flow of solid particles (s...... hiện toàn bộ
Ta Nang gold deposit in the black shales of Central Vietnam
Russian Geology and Geophysics - Tập 56 - Trang 1414-1427 - 2015
Tran Tuan Anh, I.V. Gaskov, Tran Trong Hoa, A.S. Borisenko, A.E. Izokh, Pham Thi Dung, Vu Hoang Li, Nguyen Thi Mai
Abstract The Ta Nang gold deposit is localized in Middle Jurassic black shales. The ore zone is a series of layer-by-layer crush zones and zones of hydrothermal rock alteration, ≤10 m in thickness and >2 km in length. It consists of quartz–sulfide veins, sulfidized black shales, and their hydrothermally altered varieties. Sulfide mineralizatio...... hiện toàn bộ
Paleogene and Neogene stratigraphy and paleotemperature trend of West Siberia (from palynologic data)
Russian Geology and Geophysics - Tập 52 - Trang 709-716 - 2011
V.S. Volkova
Abstract The paper discusses the Paleogene and Neogene stratigraphy of Siberia and estimates the paleotemperature and precipitation trends. The paleotemperatures were estimated on the basis of climatograms (V.P. Grichuk) and the analysis of temperatures in the ranges of the main plant genera. The Paleogene and Neogene temperatures were always high (a...... hiện toàn bộ
A two-loop frequency-domain electromagnetic induction system for detection of anomalous objects
Russian Geology and Geophysics - Tập 49 - Trang 628-632 - 2008
A.I. Chelovechkov, B.M. Chistoserdov, S.V. Baidikov
Abstract We discuss a two-loop frequency-domain electromagnetic induction sounding system which allows vertical focussing of the primary magnetic field thus reducing the disturbance from shallow subsurface. The frequency dependence of apparent resistivity estimated from the real part of the measured magnetic field turns out to be more sensitive than ...... hiện toàn bộ
Formation of mosaic diamonds from the Zarnitsa kimberlite
Russian Geology and Geophysics - Tập 59 - Trang 486-498 - 2018
A.L. Ragozin, D.A. Zedgenizov, V.S. Shatsky, K.E. Kuper
Abstract Mosaic diamonds from the Zarnitsa kimberlite (Daldyn field, Yakutian diamondiferous province) are morphologicaly and structurally similar to dark gray mosaic diamonds of varieties V and VII found frequently in placers of the northeastern Siberian craton. However, although being similar in microstructure, the two groups of diamonds differ in ...... hiện toàn bộ
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