Results 11 to 20 of about 1,186 (177)
Tantal-Niobium Minerals of the Upper Riphean Fedotovskaya Suite (the Middle Urals)
Вестник Пермского университета. Геология, 2019 The petrographic peculiarities of the Fedotovskaya Suite of the Upper Riphean in the western slope of the Middle Urals are considered. The mineral varieties of tantal-niobium components (ilmenorutile, tantalorutile, yttrocolumbite, polycrase) and geochemical regularities in distribution of niobium concentrations in well sections are described.
Boris Osovetsky +3 more
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Ti-Zr placer mineralization in Neoproterozoic (Uppe r Riphean) rocks of Kildin Formation and in contemporary beach sands of Sredny and Rybachy Peninsulas, Kola Region [PDF]
Vestnik MGTU, 2017 Concentration mechanisms of titanium-zirconium placer mineralizat ion in Neoproterozoic terrigenous rocks of Zemlepakhtinskaya Formation, Kildin Group, and in contempo rary beach deposits from Sredny Peninsula and Motka Cape from Rybachy Peninsula (
Chickiryov I. V. +1 more
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Proterozoic and early Cambrian protists: evidence for accelerating evolutionary tempo. [PDF]
Proc Natl Acad Sci U S A, 1994 In rocks of late Paleoproterozoic and Mesoproterozoic age (ca. 1700-1000 million years ago), probable eukaryotic microfossils are widespread and well preserved, but assemblage and global diversities are low and turnover is slow.
Knoll AH.
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Lithology and Mineral ResourcesThe lithogeochemical characteristics of the Uk Formation limestones (Uppermost Unit of the Riphean stratotype section in the Southern Urals) are considered. Data points of limestones (40 samples) accumulated in the middle and inner ramp environments have a quite contrasting distribution on diagrams with parameters (La/Sm)sh, (La/Yb)sh and (Sm/Yb)sh ...
А. В. Маслов, S. A. Dub
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Geologicheskii vestnikIn the section of Upper Riphean deposits along the Chernaya River, located on the southern outskirts of the Minyar town in the Chelyabinsk region, in the sandstones of the Bederysh Subformation of the Zilmerdak Formation, located in the form of interlayers among the thickness of argillites and siltstones, unusual incised bodies of various shapes were ...
В. М. Горожанин
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Upper Precambrian (Riphean) in the Southern Urals of U.S.S.R. [PDF]
Geological Magazine, 1977 J. W. Cowie
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COMPARATIVE ANALYSIS OF PALEOMAGNETIC DATA ON THE INZER FORMATION OF THE UPPER RIPHEAN IN THE [PDF]
Геосфера. Современные проблемы естественных наук, 2022 Александр Паньков
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Paleomagnetic study of red-colored rocks of the Upper Riphean in the Southern Urals [PDF]
Geologicheskii vestnik, 2020 IG UFRC RAS +7 more
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Upper riphean source rocks of the East European platform Russian part and adjacent folded areas
Moscow University Bulletin Series 4 GeologyThe article considers the deposits of the Late Riphean age, which can potentially be considered as oil and gas source deposits on the East European platform and adjacent folded areas. The data on the interlayers of rocks of the Upper Riphean enriched with organic matter are generalized and systematized.
D. D. Kozhanov +7 more
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Geologicheskii vestnikA paleomagnetic study of the rocks of the Lemeza and Bederysh subformations of the Zilmerdak Formation from a section fragment located on the Zilim River in the Bakeevo village area has been carried out. The section is represented by terrigenous, mainly red-colored rocks.
Nikita Petrovich Parfiriev +3 more
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