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Oka River basin

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Schematic geologic structure of the <span class="search-highlight">Oka</span> prism in the <span class="search-highlight">basin</span> of the Yakhoshop...
Published: 01 January 2013
Fig. 5. Schematic geologic structure of the Oka prism in the basin of the Yakhoshop River. 1 , “volcanogenic” unit of the Oka Group; 2 , “flyschoid” unit of the Oka Group; 3 , variegated member; 4 , conglomerate; 5 , carbonate olistostrome; 6 , diabase sills; 7 , Vendian–Cambrian cover
Journal Article
Published: 01 November 2015
Russ. Geol. Geophys. (2015) 56 (11): 1509–1521.
.... Starting with MIS 5, the Todza Basin and, partly, the Oka Plateau, Azas Volcanic Plateau, Mondy Basin, and river valleys in southern East Sayan were periodically covered with ice. The thickness of ice in the eastern Todza Basin was 700 m, on the Azas Volcanic Plateau it reached 300–600 m...
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Structural and geological zonation of Lower Cretaceous deposits of the east...
Published: 01 May 2009
zones and subzones, eastern Russian Plate. Structural-geological zones ( Chirva, 1993 ): I, Vyatka–Kama depression; II, Moskva syneclise (eastern flank); III, Kovernino depression; IV, Oka–Don depression; V, Murom–Lomov trough: V 1 , northern part, V 2 , Khoper River basin; VI, Ul’yanovsk–Saratov trough
Journal Article
Published: 01 January 2021
Russ. Geol. Geophys. (2021) 62 (1): 109–120.
... under the Gargan microcontinent. The Sarkhoi island-arc system (805–770 Ma), which may have been a late stage of the Shishkhid-Gol arc ( Kuzmichev and Larionov, 2011 ), and the Oka back-arc sedimentary basin, formed on the active continental margin, which includes ancient protrusions of the Siberian...
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Journal Article
Published: 01 December 2011
Russ. Geol. Geophys. (2011) 52 (12): 1662–1671.
... are analogs of the Oka Group rocks and accumulated synchronously in the same sedimentary basin. * Corresponding author. E-mail address : efletnik@igm.nsc.ru (E.F. Letnikova) 11 4 2011 15 7 2011 © 2011, IGM, Siberian Branch of the RAS 2011 IGM, Siberian Branch of the RAS...
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Levels and age of Late Pleistocene glaciers in the Mondy <span class="search-highlight">Basin</span> and in the v...
Published: 01 November 2015
Fig. 4. Levels and age of Late Pleistocene glaciers in the Mondy Basin and in the valleys of rivers on the Oka Plateau. a , Digital elevation model (SRTM) and fragment of a Digital Globe (Google Earth) image of the eastern Mondy Basin. Dashed line shows the glacier level at MIS 5/a and MIS 4
Journal Article
Published: 01 September 2019
Russ. Geol. Geophys. (2019) 60 (9): 1008–1017.
... rifting Baikal rift system East Sayan Fault Tunka basin Oka basin Bilin–Busiyn-Gol basin Isotope ratios ( 3 He/ 4 He = R ), which are in a range of ~ n × 10 –5 to ~ n × 10 –8 in terrestrial objects, can provide reliable constraints on the genesis of heat and mass reservoirs involved...
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Journal Article
Published: 01 January 2013
Russ. Geol. Geophys. (2013) 54 (1): 34–43.
...Fig. 5. Schematic geologic structure of the Oka prism in the basin of the Yakhoshop River. 1 , “volcanogenic” unit of the Oka Group; 2 , “flyschoid” unit of the Oka Group; 3 , variegated member; 4 , conglomerate; 5 , carbonate olistostrome; 6 , diabase sills; 7 , Vendian–Cambrian cover...
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Journal Article
Published: 01 July 2013
Russ. Geol. Geophys. (2013) 54 (7): 685–694.
... denudation topography, almost unchanged by the subsequent processes, are found in some parts of East Sayan. They occur most extensively (400 km 2 ) on the Oka Plateau ( Fig. 2 ). The peneplanation surface here is a gently undulating plain, slightly dissected by river valleys and partly overlain by basaltic...
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Journal Article
Published: 01 January 2017
Russ. Geol. Geophys. (2017) 58 (1): 20–36.
... as AMS 14 C dating and dendrochronological analysis. The Jombolok lava field occupies a great part of the Jombolok River and Khi-Gol River valleys in the East Sayan Mountains (Siberia) at the junction of the Oka plateau and the Kropotkin Ridge ( Fig. 1 a , b ). The field consists of cinder...
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Journal Article
Published: 01 May 2009
Russ. Geol. Geophys. (2009) 50 (5): 430–437.
... zones and subzones, eastern Russian Plate. Structural-geological zones ( Chirva, 1993 ): I, Vyatka–Kama depression; II, Moskva syneclise (eastern flank); III, Kovernino depression; IV, Oka–Don depression; V, Murom–Lomov trough: V 1 , northern part, V 2 , Khoper River basin; VI, Ul’yanovsk–Saratov trough...
FIGURES
Journal Article
Published: 16 May 2006
Canadian Journal of Earth Sciences (2006) 43 (4): 461–485.
... of the ancestral Ottawa River as it flowed into Lake Lampsilis ( Prest 1970 ), a successor basin of the Champlain Sea, and subsequently by modern rivers and streams. At higher elevations, from 70 to 95 m asl, the region features a drumlinized till plain that was partly reworked by wave action on the shores...
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Journal Article
Published: 07 February 2008
Russ. Geol. Geophys. (2008) 49 (2): 124–131.
... amphitheater area (in the valleys of the Angara, Irkut, Kitoi, Belaya, Oka, and other rivers). These deposits filling the paleorelief roughness are eolian by description, as evidenced from the ridge-hollow (dune-like) pattern in bedding surface relief. However, the genesis of these deposits is still debatable...
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Journal Article
Published: 01 July 2009
Russ. Geol. Geophys. (2009) 50 (7): 618–627.
... with continuous or periodic tectonic inversions in which the basin floor may uplift while marginal fault steps and saddles between basins may subside. Cenozoic geomorphic inversions are expressed in changes of river flow out of Lake Baikal. Fig. 3. A genetic series of intermediate steps in fault scarps...
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Journal Article
Published: 01 March 2003
Geological Magazine (2003) 140 (2): 157–172.
... margin sedimentation and a significant marine relative sea-level fall likely related to the migration of a tectonic flexural bulge along the margin ( Knight, James & Lane, 1991 ). The overlying sequence of foreland basin carbonates comprises the Chazy, Black River and Trenton groups (Fig. 1c...
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Journal Article
Published: 01 April 2004
Russ. Geol. Geophys. (2004) 45 (4): 430–442.
..., M = 4.4±0.6), Zima and Balagansk (1913, M = 4.7±0.6), and within the Rybnaya basin (29 August 1892, M = 3.9±0.7 and 25 April 1938, M = 4.9±0.5) [ 1 , 2 ]. A large contemporary event occurred 140 km southeast of Bratsk in the Oka-Angara interfluve, the M = 4 earthquake of 26 February 1996...
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Journal Article
Published: 03 January 2022
American Mineralogist (2022) 107 (1): 15–30.
... ; Sinaei-Esfahani 2013 ; Schumann and Martin 2016 ; Schumann et al. 2019 ); (4) metamorphosed carbonatite ( Moecher et al. 1997 ); and (5) coeval formation with magmatic carbonate from nearby carbonatites (i.e., Meech Lake or Oka carbonatite complexes; Lumbers et al. 1990 ). Given the various models...
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Journal Article