Results 121 to 130 of about 666 (163)

Differentiation and correlation of the Riphean rocks of Eastern Siberia

International Geology Review, 1966
The Riphean (upper) portion of the Proterozoic interval is treated as an era divided into four systems on the basis of stromatolith morphology. The evolution of the stromatoliths is traced into the Lower Cambrian in order to demonstrate that divisions of system rank can be identified by the stages of stromatolith morphogenesis, from columnar through ...
M.A. Semikhatov, V.A. Komar, S.V. Nuzhnov   +2 more
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Lower and middle Riphean lithologic complexes of the world

International Geology Review, 1982
(1982). Lower and middle Riphean lithologic complexes of the world. International Geology Review: Vol. 24, No. 5, pp. 509-525.
A. B. Ronov, V. Ye. Khain, K. B. Seslavinskiy   +2 more
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Riphean and Cambrian of central Asia

International Geology Review, 1965
Mountain structures of Central Asia are made up largely of Riphean and,Cambrian deposits that are continuous and consistent over thousands of kilometers. It is quite probable that a discrete tectonic belt existed in the Urals, Central Asia, and North China in the Riphean and Cambrian. The Riphean is late Precambrian and Early Cambrian.
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Facies Associations of Riphean Sedimentary Sequences

Lithology and Mineral Resources, 2002
Large-scale facies associations typical of intra- and pericratonic Riphean sections of the Volga–Ural region, western slope of the Urals, Timan–Pechora region, Kola Peninsula, outer and inner parts of the Siberian, North American, and Indian platforms are considered.
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New insights into the nature of the Late Riphean Eosolenides

Precambrian Research, 2009
Abstract Studies of a morphologically diverse population of Eosolenides, organic-walled macrofossils from the Upper Mesoproterozoic (1015–1025 Ma) Lakhanda Group of southeastern Siberia, suggest that these elongate fossils may be remains of soft-bodied organisms having tube-grade organization.
Tamara N. German, Victor N. Podkovyrov
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On Aphebian stromatolites and Riphean stromatolite stratigraphy

Precambrian Research, 1977
Abstract New occurrences of typical Riphean stromatolite and microphytolite groups are reported and illustrated from typical Aphebian sequences in Canada. These include Minjaria, Colonnella, and Kussiella from the Mistassini Group of central Quebec, Gymnosolen, Jacutophyton garganicum, Minjaria, Colleniella, Kussiella, Tungussia, Lenia, Osagia, and ...
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New Riphean microbiotas of the Billyakh Group, the north Anabar region (Fomich River basin): To Riphean biostratigraphy of the Siberian platform

Stratigraphy and Geological Correlation, 2007
Excellently preserved organic-walled and silicified microfossils are first found in the Lower Riphean Ust-Il’ya and Kotuikan formations of the Billyakh Group in the northern slope of the Anabar Uplift (the Fomich River basin). Similar assemblages were previously known only from sections located southward in the Kotuikan River basin, and taxonomic ...
V. N. Sergeev, N. G. Vorob’eva, P. Yu. Petrov   +2 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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Riphean Petroleum Systems of The Western Part of Siberian Platform

Proceedings, 2008
After discoveries of large oil-and-gas fields within Yuribchen-Tokhoma Zone the Riphean deposits are considered as a promising object for an exploration. The rocks are quite widespread and probably have been deposited within several anisochronous basins.
S.V. Frolov, K.O. Sobornov, A.K. Khudoley, G.G. Akhmanov, E.V. Kozlova   +4 more
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Mineralogy and petrography of Riphean rocks in the Moscow graben

Lithology and Mineral Resources, 2000
Based on the study of Upper Precambrian rocks penetrated by the Pavlovskii Posad parametric borehole in the 1770–4780 m interval, the Riphean succession is underlain by quartzose sandstones. The aulacogen within the Moscow Syneclise was covered by sediments accumulated during the intense chemical weathering of a peneplain. Above the 3550 m level, Upper
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