Clayey rocks of the Upper Proterozoic Suirovo Formation, western slope of the Southern Urals: the main features of lithochemistry

2021 ◽  
Vol 2 ◽  
Author(s):  
A.V. Maslov ◽  
Keyword(s):  
Southern Urals ◽  
Western Slope ◽  
The Southern Urals ◽  
Upper Proterozoic ◽  
Clayey Rocks

The first data on possible Mezozoic magmatism within the Western slope of the Southern Urals

2018 ◽  
pp. 24-34
Author(s):  
A. O. Khotylev ◽  
N. B. Devisheva ◽  
Al. V. Tevelev ◽  
V. M. Moseichuk
Keyword(s):  
Southern Urals ◽  
Western Slope ◽  
Isotopic Age ◽  
The Southern Urals ◽  
Early Proterozoic ◽  
Carbonate Formations ◽  
Two Bodies

Within the Western slope of the Southern Urals, there are plenty of basite dyke complexes of Riphean to Vendian among Precambrian terrigenous-carbonate formations. In metamorphic formations of the Taratash complex (Archean to Early Proterozoic, the northern closure of the Bashkirian meganticlinorium) there was observed the andesitic dyke with isotopic age of 71±1 Ma (U-Pb SHRIMP II on zircons) and near Bakal two bodies of gabbroids with zircons of similar ages were found. These are the first evidence of possible Mezozoic magmatism in this region.

scholarly journals The Source of Ore Fluids and Sm–Nd Age of Siderite from the Largest Bakal Deposit, Southern Urals

2021 ◽  
Vol 63 (4) ◽  
pp. 324-340
Author(s):  
M. T. Krupenin ◽  
A. B. Kuznetsov ◽  
M. V. Chervyakovskaya ◽  
T. Ya. Gulyaeva ◽  
G. V. Konstantinova
Keyword(s):  
Age Estimation ◽  
Iron Ore ◽  
Southern Urals ◽  
Western Slope ◽  
The Southern Urals ◽  
Crustal Source ◽  
First Time

Abstract— Based on Sm–Nd data, a crustal source of iron-ore fluid was substantiated and the probability of age estimation for hydrothermal–metasomatic siderite of the Bakal Group, Southern Urals, was shown for the first time. The εNd (Т) values of siderite (from –13.4 to –17.6) plot in the field of Riphean shale and not the Precambrian rift gabbro and granite of this region. The obtained Sm–Nd age of the Bakal siderite is 970 ± 40 Ma, which is consistent with the Pb–Pb age of siderite from the major ore phase (~1000 Ma). The established age boundary coincides with tectonic restructuring, including the formation of a number of barite–polymetallic deposits, as well as ferruginous magnesite and fluorite in the Riphean deposits on the western slope of the Southern Urals.

scholarly journals On the stratigraphy and tectonics of Zilair synclinorium of the Urals

2020 ◽  
pp. 67-72
Author(s):  
Kirill Svyatoslavich IVANOV ◽  
◽  
Victor Nikolaevich PUCHKOV ◽  
Keyword(s):  
Oil And Gas ◽  
Southern Urals ◽  
Point Of View ◽  
Western Slope ◽  
Tectonic Structure ◽  
The Southern Urals ◽  
Main Method ◽  
Siliceous Rocks ◽  
General Scientific ◽  
Key Sites

The purpose of the work was to study the tectonic structure of the Zilair synclinorium of the Western slope of the southern Urals, which is important both from the general scientific point of view and for the needs of oil and gas prospecting of the territory. The main method of research was a detailed study of the stratigraphy of key sites with the search for conodonts in siliceous rocks. We also used data from seismic profiling of the territory. Result of work. The Zilair synclinorium of the southern Urals is an asymmetrically different facies structure; its Western and Eastern wings are composed of deposits belonging to different facies zones – the shelf (neritic) in the West and the continental slope and rise (bathyal) in the East. In the axial zone of the synclinorium, among the Famennian graywacke deposits of the Zilair series, several sites composed of cherts are known. It was believed, that the cherts are of Silurian age and are the klippes of a very large overthrust belonging to the ophiolite association. According to occurences of conodonts, we have established that all these cherts have Devonian, mainly Frasnian age. They are not klippes of an overthrust, but the central parts of the anticlinal folds, complicated by steep thrusts. According to our data, the real overthrust with a great horizontal amplitude is Pokrovsky, where two facial zones come into an abrupt contact without any transition between them.

The first findings of Ta-Nb mineralization in granites on the western slope of the Southern Urals

2012 ◽  
Vol 445 (2) ◽  
pp. 943-946
Author(s):  
V. I. Snachev ◽  
D. E. Saveliev ◽  
A. V. Snachev ◽  
E. A. Bazhin ◽  
F. R. Ardislamov
Keyword(s):  
Southern Urals ◽  
Western Slope ◽  
The Southern Urals

The data on the composition and age of the Kozlinogorsk gabbro-alkaline granite complex on the western slope of the Southern Urals

2015 ◽  
Vol 70 (4) ◽  
pp. 338-349 ◽  
Author(s):  
Al. V. Tevelev ◽  
I. A. Kosheleva ◽  
A. O. Khotylev ◽  
I. A. Prudnikov ◽  
Ark. V. Tevelev
Keyword(s):  
Southern Urals ◽  
Western Slope ◽  
The Southern Urals ◽  
Alkaline Granite ◽  
Granite Complex

Ordovician deposits of the western slope of the Southern Urals and their correlation based on conodonts and chitinozoans

2016 ◽  
Vol 57 (2) ◽  
pp. 265-281 ◽  
Author(s):  
T.M. Mavrinskaya ◽  
R.R. Yakupov
Keyword(s):  
Southern Urals ◽  
Western Slope ◽  
The Southern Urals

scholarly journals The Lower Precambrian in the structure of paleozoic in the Subpolar Urals

2019 ◽  
Vol 486 (5) ◽  
pp. 572-576
Author(s):  
Yu. I. Pystina ◽  
A. M. Pystin ◽  
V. B. Hubanov
Keyword(s):  
Southern Urals ◽  
Western Slope ◽  
Geochronological Data ◽  
The Urals ◽  
The Southern Urals ◽  
Early Precambrian ◽  
Subpolar Urals ◽  
Late Precambrian ◽  
Lower Riphean ◽  
First Time

In many polymetamorphic complexes of the Urals, rocks with Early Precambrian age marks have been established. But only with respect to the two polymetamorphic complexes located on the western slope of the Southern Urals: the Taratash and Aleksandrov, their indisputable belonging to the Archean-Paleoproterozoic section is recognized. They are framed by weakly metamorphosed Lower Riphean sediments and reliable geochronological data are obtained from them, which unambiguously indicate the Early Precambrian age of rock metamorphism. The available Early Precambrian age datings for other Ural polymetamorphic complexes (with the prevailing number of Late Precambrian and Paleozoic age values) are interpreted differently. Therefore, their attitude to the Lower Precambrian section has been disputed by many researchers. In the article, for the first time, based on the results of mass U-Pb dating of metamorphic zircons from the gneiss of the Nyrtin polymetamorphic complex of the Subpolar Urals, taking into account the available data, the Paleoproterozoic age of the earliest stage of rocks metamorphism (2127 ± 31 Ma) is substantiated. This gives grounds to assert that the complex under consideration, as well as the Taratash and Alexandrov complexes of the Southern Urals, belongs to the Lower Precambrian formations involved in the structure of Uralides.

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