Results 51 to 60 of about 2,364 (193)

Redox bottom-water conditions in Neoproterozoic basins on eastern and north-eastern periphery of East-European Platform

Литосфера, 2015
The redox bottom-water conditions in the sedimentary basins, which existed during the Late Riphean-Vendian on the east and north-east (in modern coordinates) margins of the Baltic, are investigated.
A. V. Maslov, V. N. Podkovyrov
doaj   +2 more sources

Provenance reconstructions. Article 1. Mineralogical and petrographic approaches and methods

Литосфера, 2020
Research subject. This is the first in the series of four articles, which aims to review existing provenance reconstruction tools.Methods and materials.
A. V. Maslov, O. Yu. Melnichuk, G. A. Mizens, Yu. V. Titov   +3 more
doaj   +1 more source

Seismogeological and structural characteristic of the Riphean sediments within Aldan-Maya petroleum region

Interexpo GEO-Siberia, 2022
The key features of the geological structure of the Riphean sedimentary cover within the Aldan-Maya petroleum region are considered. Using seismic and acoustic logging data, the velocity characteristics of the Riphean deposits were studied.
I. Gubin, А. E. Kontorovich, S. A. Moiseev   +2 more
semanticscholar   +1 more source

THE RIPHEAN MAGMATISM PRECEDING THE OPENING OF URALIAN PALEOOCEAN: GEOCHEMISTRY, ISOTOPES, AGE, AND GEODYNAMIC IMPLICATIONS

Геодинамика и тектонофизика, 2018
The rocks from different stages of the geodynamic evolution have been preserved in the Urals. In its geologic history, the least studied is the transition period between continental rifting and the beginning of oceanic spreading.
V. V. Kholodnov, G. Yu. Shardakova, G. B. Fershtater, E. S. Shagalov   +3 more
doaj   +1 more source

αAlE indices of Riphean clay rocks of the Southern Urals and weathering features (first attempt at analysis)

Lithosphere
Research subject. The clay rocks (fine-grained clayey siltstones, shales and mudstones) of the Lower, Middle and Upper Riphean of the Bashkir megaanticlinorium of the Southern Urals (Riphean stratotype).Materials and Methods.
A. N. Maslov
semanticscholar   +1 more source

Possible “current climate images” of deposits of various lithostratigraphic units of the Ural’s Riphean and Vendian

Geologicheskii vestnik, 2021
The average values of the chemical index of alteration (CIA) for clayey rocks of a number of lithostratigraphic units of the Riphean stratotype are compared with the CIA values known in the literature for the sediments of modern large rivers of different
A. Maslov, I. Ras
semanticscholar   +1 more source

Sulfide mineralization, native gold and its geochemical connections in the Riphean deposits of the Avzyan ore-bearing region (the Southern Urals)

Литосфера, 2018
In the Avzyan ore-bearing region the sulfides from the low-sulfide gold-quartz deposits (Ulyuk-Bar, Kurgashly) are characterized by higher concentrations of As, Co, Ni, Cu, Pb in comparison with sulfides from sediments outside of ore-bearing zones.
Sergei V. Michurin, Aisylu A. Sharipova, Мikhail Т. Krupenin, Dmitrii A. Zamyatin, Аlsu М. Musina, Vladimir А. Popov   +5 more
doaj   +1 more source

Geodynamic control on the petroleum habitat of the Uralian Foreland

Georesursy
A comparative study of the Uralian Foreland in the Timan-Pechora and Volga Urals basins reveals considerable differences in structure and petroleum habitat. These differences were in large measure controlled by their geodynamic settings.
K. O. Sobornov
doaj   +1 more source

Sc, Cr, Co, Ni, Th and rare earth elements systematics in black shales of Murav’inskaya and Velsovskaya formations (Lyapin-Kutim anticlinorium, the Northern Urals): to the provenance reconstructions

Литосфера, 2017
The features of the Sc, Cr, Co, Ni, Th and rare earth elements distribution in the black shales of the Riphean Murav’inskaya and Velsovskaya formations in southern part of the Lyapin-Kutim anticlinorium (Northern Ural) are analyzed.
Andrey V. Maslov, Georg A. Petrov, Yury L. Ronkin   +2 more
doaj   +1 more source

Riphean of the Kamsko-Belsk aulacogen: Hiatuses and lithogeochemistry of clastic rocks

Lithosphere
Research subject. Sandstones and clay rocks of the Lower, Middle, and Upper Riphean (the Kyrpino, Serafimovo, and Abdulino groups, respectively) of the Kamsko-Belsk aulacogen.
A. V. Maslov
semanticscholar   +1 more source