Results 151 to 160 of about 1,186 (177)

Isotope age of boundaries between the general stratigraphic subdivisions of the Upper Proterozoic (Riphean and Vendian) in Russia: The evolution of opinions and the current estimate

Stratigraphy and Geological Correlation, 2015
M A Semikhatov, A B Kuznetsov, N M Chumakov   +2 more
exaly   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

Carbon and oxygen isotopic composition in carbonate rocks of the Deminskaya and Nizvinskaya Suites (the Upper Riphean of the Northern Ural)

Stratigraphy and Geological Correlation, 2009
N M Chumakov
exaly   +2 more sources

First Results of U–Pb LA–ICP–MS Isotope Dating of Detrital Zircons from Arkose Sandstone of the Biryan Subformation of Zilmerdak Formation (Upper Riphean, South Urals)

Doklady Earth Sciences, 2018
A V Maslov, Yu V Erokhin, Axel Gerdes
exaly   +2 more sources

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
T S Zaitseva, I M Gorokhov, T A Ivanovskaya   +2 more
exaly   +2 more sources

Rugosoopsis : a new group of Upper Riphean animals

Geological Society, London, Special Publications, 2007
Abstract The Upper Riphean Lakhanda biota (from the Uchur-Mayai region of SE Siberia) contains abundant, well preserved and highly biodiverse microfossil assemblages including Rugosoopsis microfossils, characterized by a uniform shape, with prominent closely transversely spaced wrinkles on the outer ...
T. N. Hermann, V. N. Podkovyrov
openaire   +1 more source

STRUCTURE AND ENVIRONMENTS OF THE UPPER RIPHEAN DZHURA REEF FORMATION OF THE SOUTHEASTERN YENISEI RIDGE

Russian Geology and Geophysics, 1993
Under consideration are the composition, structure and depositional environments of the Upper-Riphean Dzhura Reef Formation in the southeastern Yenisei Ridge. It was shown that a carbonate platform with reef-like stromatolithic rim structures has been formed in the Dzhurian time. It turned into a deep basin northward. It was shown that the evolution of
E. M. Khabarov, G. I. Tanygin
openaire   +1 more source

Mineralogical, Mössbauer, and Isotopic–Geochronological Study of Upper Riphean Al-glauconites, Kil'din Group, Srednii Peninsula

Lithology and Mineral Resources, 2003
The paper presents mineralogical, crystallochemical, and Rb–Sr age data on globular layer silicates of the glauconitic series from lower horizons of the Upper Riphean Kil'din Group, Srednii Peninsula. Chloritization significantly changed the globular Al-glauconite in sandstones of the Parajarvinskaya Formation.
T. A. Ivanovskaya, T. S. Zaitseva, I. M. Gorokhov, G. V. Konstantinova   +3 more
openaire   +2 more sources

Formation conditions and rare-earth mineralization of Riphean carbonaceous shales of the Upper Nyatygran Subformation, Russian Far East

Russian Journal of Pacific Geology, 2017
Graphitic and graphite varieties are distinguished in the carbonaceous shales of the Riphean Upper Nyatygran Subformation in the Melgin fragment of the Turan block, eastern Bureya Massif. The protolith of the graphitic shales had a terrigenous source related to island-arc volcanism.
A. A. Cherepanov, N. V. Berdnikov, A. V. Shtareva, V. O. Krutikova   +3 more
openaire   +1 more source

Clay minerals in Upper Riphean-Wendian terrigenous rocks and in the base of the Markovsk deposit

International Geology Review, 1974
D.D. Kotel'nikov, T.V. Florenskaya
openaire   +1 more source

First results of U-Pb LA-ICP-MS-isotope dating of detrital zircons from Upper Riphean arkose sandstones of the Biryan member of the Upper Riphean Zilmerdak Formation, Southern Ural

Доклады академии наук, 2018
A. Maslov, Yu. Erokhin, A. Gerdes, Yu. Ronkin, K. Ivanov   +4 more
openaire   +1 more source