Results 81 to 90 of about 126 (121)

Geochemical features of HC- occurrence in carbonates of the Minyar formation of the Upper Riphean, Bashkir Meganticlinorium, Southern Urals

Geologicheskii vestnik, 2023
The results of a geochemical study of organic matter found in carbonate deposits of a typical section of the Minyar formation of the Upper Riphean, exposed within the Karatau structural complex in the western part of the Bashkir meganticlinorium, are presented. Analytical methods of gas chromatography and chromato-mass spectrometry in extracted ...
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Reconstruction of Source-Rock Composition of the Middle and Upper Riphean Rocks of the Isherim and Bashkir Anticlinoria, Urals

Geochemistry International, 2018
It is shown that the Riphean sediments of the Bashkir and Isherim anticlinoria of the Ural mobile belt were formed in different settings. Sediments of the Bashkir Anticlinorium are autochthonous and were formed in the eastern (in present-day coordinates) Baltica from proximal siliciclastics, whereas the complexes of the Isherim Anticlinorium did not ...
A. V. Maslov, G. A. Petrov, Yu. L. Ronkin   +2 more
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Carbonate Sedimentology of the Upper Riphean (Neoproterozoic) Uk Formation, Southern Urals

Lithology and Mineral Resources, 2021
S. A. Dub, D. V. Grazhdankin
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Mössbauer characteristics, mineralogy and isotopic age (Rb-Sr, K-Ar) of Upper Riphean glauconites from the UK Formation, the southern Urals

Stratigraphy and Geological Correlation, 2008
Comprehensive mineralogical analysis, Mossbauer spectroscopy and isotopic-geochronological study have been carried out for globular phyllosilicates (GPS) of glauconite group from the Uk Formation, the second one below the top of the Upper Riphean stratotype in the southern Urals.
T. S. Zaitseva, I. M. Gorokhov, T. A. Ivanovskaya, M. A. Semikhatov, A. B. Kuznetsov, N. N. Mel’nikov, M. M. Arakelyants, O. V. Yakovleva   +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 Geology
The 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, M. A. Bolshakova, K. A. Sitar, A. N. Botalov, I. V. Shirobokova, D. I. Gabdrakhmanova, V. V. Maltsev, S. S. Zaichenko   +7 more
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The Upper Riphean of the Yenisei Range: Sr Chemostratigraphy and Pb–Pb Age of Limestones of the Tungusik and Shirokaya Groups

Stratigraphy and Geological Correlation, 2019
The Pb–Pb isotope age and the Sr isotope signature of the Upper Riphean sedimentary limestones from the south of the Yenisei Range on the western margin of the Siberian Craton were obtained. The Pb–Pb age of carbonate deposits of the Dadykta Formation of the Tungusik Group in the Kamenka facial zone in the east of the Yenisei Range is 1020 ± 20 Ma. The
A. B. Kuznetsov, B. B. Kochnev, I. M. Vasilyeva, G. V. Ovchinnikova   +3 more
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U–Pb LA–ICP–MS Age of Detrital Zircons from the Lower Riphean and Upper Vendian Deposits of the Luga–Ladoga Monocline

Doklady Earth Sciences, 2018
The results of LA–ICP–MS U–Pb analyses of detrital zircons from the Precambrian deposits of Luga–Ladoga monocline are discussed. The age spectra of the zircons separated from the Riphean to Upper Vendian sandstones from the Shotkusa-1 well demonstrate dominance of the Paleo- and Mesoproterozoic grains while the Archaean zircons are subordinate.
A. S. Ivleva, V. N. Podkovyrov, V. B. Ershova, V. B. Khubanov, A. K. Khudoley, S. N. Sychev, N. I. Vdovina, A. V. Maslov   +7 more
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Upper Riphean lithologic complexes of the world

International Geology Review, 1982
V. Ye. Khain, A. B. Ronov, K. B. Seslavinskiy   +2 more
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The first paleomagnetic data for the Lemeza and Bederysh subformations of the Upper Riphean Zilmerdak Formation (Southern Urals)

Geologicheskii vestnik
A 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, Konstantin Nikolaevich Danukalov, Inessa Vladimirovna Golovanova, Raushaniya Yurisovna Valieva   +3 more
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Flysch association of the upper Riphean of the Talas Range

International Geology Review, 1980
V. G. Korolev, R. A. Maksumova
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