Results 61 to 70 of about 109 (102)

Comparative characteristics of Middle Paleozoic and Late Riphean plume magmatism of the Siberian platform

Doklady Earth Sciences, 2010
Based on isotopic and geochemical data for Late Riphean dikes and sills and for Devonian dolerite dikes and basalt covers within the Sette-Daban rift in the western part of the Siberian platform, we proved conceptions about the participation of various deep sources in their formation.
A. I. Kiselev, V. V. Yarmolyuk, I. I. Kolodeznikov   +2 more
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Late Riphean age of the Karsakpai massif of alkaline syenites of South Ulutau (Central Kazakhstan)

Doklady Earth Sciences, 2012
The Ulutau massif is located in the western part of Central Kazakhstan and is one of largest Precambrian sialic massif of this region. Geologically, the southern part of the massif is composed of volcanogenic and volcanogenic–sedimentary rocks of acid and rare basic composition metamorphosed under the green schist metamorphism facies.
A. A. Tret’yakov, K. E. Degtyarev, E. B. Sal’nikova, K. N. Shatagin, A. B. Kotov, E. F. Letnikova, S. Z. Yakovleva, I. V. Anisimova   +7 more
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Late Riphean stage of development of the Russian plate

International Geology Review, 1979
(1979). Late Riphean stage of development of the Russian plate. International Geology Review: Vol. 21, No. 2, pp. 167-180.
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Sources of the Late Riphean carbonatite magmatism of Northern Transbaikalia: Geochemical and isotope-geochemical data

Geochemistry International, 2011
New major and trace element and Nd-Sr isotope results are reported for the carbonatites of the Veseloe and Pogranichnoe occurrences, Northern Transbaikalia. The carbonatites from both these occurrences are enriched in Sr, Ba, LREE, Th, U, and depleted in Ti, Cr, and V relative to primitive mantle.
A. G. Doroshkevich, G. S. Ripp, N. V. Vladykin, V. M. Savatenkov   +3 more
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Late Riphean age of conglomerates from the Kholbonur complex of Songino block, Central Asian Caledonides

Stratigraphy and Geological Correlation, 2013
The Early Caledonian folded area of Central Asia comprises a variety of continental crust fragments with Early to Late Precambrian crystalline basement. Crystalline rocks, which form part of the Songino block, outcrop at the junction between the Dzabkhan and Tuva-Mongolian terranes.
I. K. Kozakov, E. B. Salnikova, V. P. Kovach, I. V. Anisimova, A. M. Fedoseenko, S. Z. Yakovleva   +5 more
openaire   +1 more source

The Late Riphean–Paleozoic history of the Uda–Vitim island arc system in the Transbaikalian sector of the Paleoasian ocean

Russian Geology and Geophysics, 2010
Abstract New structural, petrological, chemical, isotope, and paleomagnetic data have provided clues to the Late Riphean–Paleozoic history of the Uda–Vitim island arc system (UVIAS) in the Transbaikalian sector of the Paleoasian ocean, as part of the Transbaikalian zone of Paleozoids.
I.V. Gordienko, A.N. Bulgatov, S.V. Ruzhentsev, O.R. Minina, V.S. Klimuk, L.I. Vetluzhskikh, G.E. Nekrasov, N.I. Lastochkin, V.S. Sitnikova, D.V. Metelkin, T.A. Goneger, E.N. Lepekhina   +11 more
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Late Riphean alkaline magmatism in the western margin of the Siberian Craton: A result of continental rifting or accretionary events?

Doklady Earth Sciences, 2008
Magmatic evolution in the western margin of the Siberian Craton has attracted the attention of many specialists in the context of debatable problems concerning the formation and breakdown of the Meso- and Neoproterozoic Rodinia supercontinent, the evolution of the Paleoasian ocean, and the origin of the Central Asian Foldbelt [1‐3].
V. A. Vernikovsky, A. E. Vernikovskaya, E. B. Sal’nikova, N. G. Berezhnaya, A. N. Larionov, A. B. Kotov, V. P. Kovach, I. V. Vernikovskaya, N. Yu. Matushkin, A. M. Yasenev   +9 more
openaire   +1 more source

THE STRATIGRAPHY AND HYDROCARBON POTENTIAL OF THE RIPHEAN-VENDIAN (MIDDLE-LATE PROTEROZOIC) SUCCESSION ON THE RUSSIAN PLATFORM

Journal of Petroleum Geology, 1997
Recent studies of the Riphean‐ Venetian succession of the Russian Platform have indicated that geological factors favourable for the occurrence of hydrocarbons may be present. These factors include substantial thicknesses of sedimentary rocks; the presence of reservoir rocks and seals, together with source rocks containing sapropelic organic matter ...
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Potentially productive late riphean sediments at the basis of the Nepa-Peleduy arch of the Nepa-Botuoba anteclysis in the south of the Siberian platform

Vestnik of North-Eastern Federal University. Series "Earth Sciences", 2021
К настоящему времени основные залежи нефти и газа в разрезе кембрия и докембрия юга Сибирской платформы приурочены к терригенной части осадочного чехла докембрия, тогда как в гораздо более мощном галогенно-карбонатном комплексе венд-кембрия и нижнего кембрия обнаружено мало промышленных скоплений УВ [9].
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High-potassium rocks of the Late Riphean Mara paleovolcano, Biryusinsky ledge, South of the Siberian Platform

Стратиграфия
The research was focused on the Mara–Kamenka–Uvat interfluve of the Biryusinsky ledge of the Siberian Platform, where more than half a century ago, during prospecting works for manganese, the Marа paleovolcano was identified. However, specific volcanogenic-sedimentary rocks were considered as a part of the Karagas sedimentary series of the Late Riphean.
А. E. Izokh, Е. F. Letnikova, I. А. Izbrodin, А. V. Ivanov, S. I. Shkolnik, А. G. Doroshkevich   +5 more
openaire   +1 more source