Results 121 to 130 of about 1,847 (178)

Riphean basins of the central and western Siberian Platform

Marine and Petroleum Geology, 2011
Abstract The Siberian Platform is unique by its volume of Meso-Neoproterozoic sedimentary deposits. For about one billion years (∼1650–650 Ma) several sedimentary basins were developed here, resulting in the formation of several kilometers thickness of sedimentary cover.
Sergey V. Frolov, Grigorii G. Akhmanov, Elena V. Kozlova, Oleg V. Krylov, Ksenia A. Sitar, Yuriy I. Galushkin   +5 more
exaly   +2 more sources

Riphean stromatolitic formations fringing the East European platform

Stratigraphy and Geological Correlation, 2007
Riphean stromatolitic formations flank the East European epi-Karelian platform only in the east and northeast. They are traceable as long (over 3600 km) relatively narrow belt consisting of two rectilinear segments, one running along the Urals western flank from southern extremity of the Bashkirian meganticlinorium to the Polyudov Ridge and the other ...
exaly   +2 more sources

Riphean and Vendian of the USSR

Precambrian Research, 1981
Abstract The Upper Proterozoic of the U.S.S.R. is subdivided into two chronostratigraphic units according to the officially-adopted stratigraphic scale: the Riphean, 1650 ± 50−650 ± Ma, comprising four subordinate subdivisions; and the Vendian, 650 ± Ma—Cambrian.
N.M. Chumakov, M.A. Semikhatov
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Fungal remains from the Late Riphean

Paleontological Journal, 2006
The paper describes organic remains of one billion years old from the Lakhanda microbiota of the Uchur-Maya Region of southeastern Siberia. The microfossils were discovered on organic sapropelic films. The preserved morphological characters and some developmental stages of the ancient organisms, which are fixed in fossil state, suggest that some of ...
T. N. Hermann, V. N. Podkovyrov
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Vendian and Riphean rifting in NW Scotland

Journal of the Geological Society, 1995
In the Neoproterozoic, NW Scotland was located in a tract of extending continental lithosphere that evolved into the eastern passive margin of Laurentia when Iapetus opened in the Vendian. On the NW Caledonian foreland, major rift events are inferred in the Riphean and Vendian, corresponding to the intra-Torridonian and sub-Cambrian unconformities ...
N. J. SOPER, R. W. ENGLAND
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Formation of an unusual form of Riphean Eosolenides

Paleontological Journal, 2014
A specific group of tubular microfossil Eosolenides, which display a series of biological innovations for these organic-walled microorganisms, is reported from the Meso-Neoproterozoic boundary beds (Lakhanda Microbiota, 1 Ga). This morphologically diverse group is recognized by the presence of unicellular symbionts and by an external narrowly-segmented
T. N. Hermann, V. N. Podkovyrov
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Ediacaria in the Siberian hypostratotype of the Riphean

Doklady Earth Sciences, 2008
The study of stratigraphy and paleontology of the Riphean/Vendian boundary strata is fundamental to decoding the transitional (Neoproterozoic) stage in the evolution of the biosphere. During this stage, the Proterozoic-style biota with limited morphological diversity, small size of individual organisms, lack of biogeographic zonation, and low rates of ...
K. E. Nagovitsin, D. V. Grazhdankin, B. B. Kochnev   +2 more
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Late Riphean Sedimentation in the Central Russian Aulacogen

Lithology and Mineral Resources, 2003
Result of the analysis of combined structural, facies, mineralogical, and micropaleontological data suggest that the formation of the Central Russian Aulacogen was related to the evolution of a major strike-slip system in the Late Riphean on the Russian Plate.
N. P. Chamov, V. V. Kostyleva, A. F. Veis, V. I. Gorbachev   +3 more
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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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Mayanian (1100–850 Ma) – Prebaikalian Upper Riphean of Siberia

Russian Geology and Geophysics, 2008
Abstract The Mayanian (1100–850 Ma) is an all-Siberian stratigraphic subdivision of the Neoproterozoic distinguished on the basis of generalized geological and paleontological data for the Maya Group in the southeast of the Siberian craton and for its counterparts in other structure-facies areas (SFA).
V.V. Khomentovsky, K.E. Nagovitsin, A.A. Postnikov   +2 more
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