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Onega Depression

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Series: GSA Special Papers
Published: 01 May 2015
DOI: 10.1130/2015.2510(08)
... complex) in combination with a bimodal rhyolite-picrite association close in geochemistry to ocean-island basalt and subvolcanic minor gabbro and wehrlite intrusive bodies (2.11–1.92 Ga); (ii) volcanic-sedimentary and mafic-ultramafic subvolcanic complexes of the Onega depression (ca. 1.98 Ga); (iii...
Series: GSA Special Papers
Published: 01 May 2015
DOI: 10.1130/2015.2510(12)
... orogen, and Onega Depression) and also Archean tectonic structures (Kuhmo-Segozero and Kovdozero microcontinents, and Chupa granulite-gneiss belt). The deep structure of the platform basement beneath the Moscow syneclise is an immediate extension of the Fennoscandian Shield. The basement structure...
Journal Article
Published: 01 June 2018
Russ. Geol. Geophys. (2018) 59 (6): 697–708.
...S.B. Nikolaeva; A.A. Nikonov; S.V. Shvarev; M.V. Rodkin Abstract We present results of detailed paleoseismological research at the key site on the flank of the Lake Imandra depression (Kola region, northeast of the Fennoscandian Shield). Study of various groups of paleoseismic deformations...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2009
DOI: 10.1144/SP326.6
EISBN: 9781862395749
... and the oil shales of the Russian Onega Basin ( Hunt 1996 ). The commercial accumulations of indigenous Proterozoic-sourced petroleum in Siberia ( Meyerhoff 1980 ), Oman ( Al-Marjeby & Nash 1986 ; Alsharhan & Kendall 1986 ) and China ( Korsch et al. 1991 ) demonstrate the economic viability...
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Journal Article
Published: 01 August 2002
The Canadian Mineralogist (2002) 40 (4): 1161–1170.
... geologisch-bergmännischer Überblick . Erzmetall 44 , 162 – 171 . Ledeneva , N.V. & Pakul'nis , G.V. ( 1997 ): Mineralogy and formation conditions of uranium–vanadium deposits in the Onega Depression, Russia . Geol. Rudn. Mestorozhd . 39 , 258 – 268 (in Russ.) Pouchou , J...
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Series: Geological Society, London, Memoirs, Geological Society, London, Memoirs
Published: 01 January 2004
DOI: 10.1144/GSL.MEM.2004.030.01.04
EISBN: 9781862394056
... of the Vendian succession are erosional ( Jakobson & Nikulin 1985 ). Pre-Vendian sediments are confined to a vast pericratonic Mezen Basin on the northeastern margin of the East European Craton, but also fill deep depressions in the eastern slope of the Baltic Shield, the Onega and Zimnegory Grabens...
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Journal Article
Published: 01 February 2021
Russ. Geol. Geophys. (2021) 62 (2): 194–206.
..., linearly elongate valley-like depressions that are frequently encountered in the northwestern sector of the East European Plain (EEP) ( Fig. 1 -I) with their formation attributed to the Late Valdai (Weichselian) glaciation, are interpreted as distinctly different from typical lowland river valleys ( Kvasov...
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Series: Geological Society, London, Memoirs, Geological Society, London, Memoirs
Published: 01 January 2006
DOI: 10.1144/GSL.MEM.2006.032.01.32
EISBN: 9781862394070
..., the Karelian composite province is subdivided into West Karelian and Central Karelian domains of late Archaean age (2.7–2.8 Ma), and the oldest (3.5–2.85 Ma) Vodlozer domain ( Lobach-Zhuchenko et al . 2000 ), in the southernmost part of the Shield near Lake Onega (Fig. 6 ). Several narrow Archaean greenstone...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/SP286.12
EISBN: 9781862395343
... the last few years. Major fossil localities were discovered in the deposits exposed in the valleys of rivers of the Onega Peninsula (Suzma, Karakhta, and Solza rivers) and on Zimny Bereg (Winter Coast) of the White Sea. Most of the collection described here has been systematically excavated by the field...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1927
AAPG Bulletin (1927) 11 (5): 493–513.
... of Transcaucasia. The structure of the northern third of the Russian Platform ( Fig. 1 ) is still imperfectly known. At several places in the far north, as in Andomer Mountain on Lake Onega, on Onega River, and on the northern Dvina, flat folds trending northeastward occur in the Devonian beds. Oil...
FIGURES
Journal Article
Published: 01 November 2020
Journal of Paleontology (2020) 94 (6): 1019–1033.
... and Australia in the interval of ca. 558–550 Ma (Narbonne et al., 2012 ). Several species of the genus Dickinsonia , along with the genus Yorgia , closely related to it, destroyed the upper layer of microbial mats, leaving deep and wide depressions arranged in chains (Ivantsov and Malakhovskaya, 2002...
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Journal Article
Published: 01 November 2006
Journal of Paleontology (2006) 80 (6): 1142–1151.
.... Sabattini and Riccardi , 1984 , p. 357, pl. 1, figs. 1– 6; Archangelsky, Azcuy, Cesari, Gonzalez, Hünicken, Mazzoni, and Sabattini, 1996 , pl. 1, fig. 23. As for the genus. Shell subglobose, depressed, and moderately involute, with narrow and deep umbilicus, rounded umbilical shoulders...
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Journal Article
Published: 01 August 1992
Journal of the Geological Society (1992) 149 (4): 589–592.
... Precambrian-Cambrian boundary strata, Elburz Mountains, Iran Geological Magazine 1989 126 283 289 Hagenfeldt S. E. Winterhalter B. Acritarch assemblages of Early and Middle Cambrian age in the Baltic Depression and south-central Sweden 1988 6 151 161 Geological Survey of Finland...
Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/SP286.18
EISBN: 9781862395343
... material was recovered from Vendian deposits of the Onega Peninsula (White Sea area, northern Russia) and from the Odessa borehole (southern Ukraine). These remains were thought to be planktonic, colonial algae, similar in general morphology to the extent Volvox (Chlorophyta) ( Sokolov 1965...
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Journal Article
Published: 01 March 2021
Journal of Paleontology (2021) 95 (2): 236–251.
... of all tubular units, which are distinctly different from the accordion-like shape with prominent rings separated by depressed “buckets” of Gaojiashania (Cai et al., 2013 ). Multiconotubus is superficially similar, however the conical shape (and cone-in-cone morphology) is unlike the parallel-sided...
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Series: Investigations in Geophysics
Published: 01 January 2002
DOI: 10.1190/1.9781560802068.ch12
EISBN: 9781560802068
... soundings used in oil and gas exploration. It is remarkable that in all these examples, the interpretation of MT soundings reduced chiefly to one-dimensional inversion of effective apparent-resistivity curves, or ρ eff . This broad depression occupies a significant part of the East European Platform...
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Journal Article
Journal: Economic Geology
Published: 01 May 2010
Economic Geology (2010) 105 (3): 553–569.
... oil shale of the FB Formation. This contrasts with the redox interface located near the unconformity between oxidized sandstone and reduced basement rocks for the younger unconformity-related deposit type. The Franceville basin in Gabon and the Zaonezhskaya Formation, Onega Lake, Russia, represent...
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Journal Article
Published: 01 November 2019
Russ. Geol. Geophys. (2019) 60 (11): 1278–1299.
... due to their different resistance to decomposition ( Vetrov et al., 2008 ; Melenevskii et al., 2011 , 2015 , 2017 ; Leonova et al., 2018b , 2019 ). Lake Kotokel’ (52º49′ N, 108º09′ E) occupies the most of the Kotokel’ depression located in the southeastern coast of the Middle Baikal...
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Journal Article
Published: 01 July 2016
Russ. Geol. Geophys. (2016) 57 (7): 1099–1110.
... to melt and the freshwater sea enlarges so that it begins to discharge through the Tobol–Turgai basin into the Turan depression of the Aral Sea region; probably, with passes into the Caspian Depression in the south. Moraines, paths of ice movement (troughs), shears, thrusts, and other dislocations...
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Journal Article
Published: 29 August 2018
Bulletin de la Société Géologique de France (2018) 189 (3): 11.
.... * Corresponding author: racki@us.edu.pl † Deceased author. Therefore, we cannot agree with the recent opinion of Raukas et al. (2005 , pp. 343–344) and Raukas and Stankowski (2011 , p. 38) that Hofmann (1841) was the first proponent of the “theory” that “ the Kaali depression bore an astonishing...
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