The first data on breithauptite in chromitite from the northern part of the Voykar–Synya ultramafic massif (Polar Urals)

2017 ◽  
Vol 477 (1) ◽  
pp. 1363-1367
Author(s):  
R. I. Shaibekov ◽  
M. M. Gaikovich ◽  
S. I. Isaenko ◽  
S. S. Shevchuk
Keyword(s):  
Polar Urals ◽  
Ultramafic Massif

ACCESSORY SULPHIDES AND ARSENIDES FROM CHROMYTITES OF KHARCHERUZ ULTRAMAFIC MASSIF, THE POLAR URALS

2021 ◽  
pp. 54-64
Author(s):  
Alexey Yurichev
Keyword(s):  
Sulfide Mineralization ◽  
Polar Urals ◽  
Ophiolite Belt ◽  
The North ◽  
Ultramafic Massif ◽  
Ore Minerals ◽  
The Polar Urals

The study is focused on accessory sulfide mineralization revealed in massive chromitites of Kharcheruz ultramafic massif, which is part of the Khadatinsky ophiolite belt closing ophiolite complexes of the Polar Urals in the north. Three paragenetic associations of accessory sulfides associated with various processes of host chromitites formation and transformation are identified. Typomorphic and chemical features of ore minerals are characterized.

New records of two species in the genus Pseudobaeospora (Basidiomycota, Agaricales) from Russia

2013 ◽  
Vol 47 ◽  
pp. 127-134
Author(s):  
O. V. Morozova ◽  
E. S. Popov
Keyword(s):  
Type Species ◽  
Nature Reserve ◽  
New Records ◽  
Line Drawings ◽  
Polar Urals ◽  
State Nature Reserve ◽  
State Nature ◽  
The Polar Urals

The paper describes two records of species of the genus Pseudobaeospora Singer emend. Bas. P. pillodii (Quel.) Wasser, collected in 2009 in the Teberda State Nature Reserve, was found before in Altai [reported as P. oligophylla (Singer) Singer, the type species of the genus], as well as in the Polar Urals. P. pyrifera is new to Russia. The descriptions are illustrated by line drawings and colour photographs.

Expanding forests and changing growth forms of Siberian larch at the Polar Urals treeline during the 20th century

2008 ◽  
Vol 14 (7) ◽  
pp. 1581-1591 ◽  
Author(s):  
NADEZHDA DEVI ◽  
FRANK HAGEDORN ◽  
PAVEL MOISEEV ◽  
HARALD BUGMANN ◽  
STEPAN SHIYATOV ◽  
...  
Keyword(s):  
20Th Century ◽  
Siberian Larch ◽  
Growth Forms ◽  
Polar Urals ◽  
The Polar Urals

scholarly journals Clitellate worms (Annelida) in lateglacial and Holocene sedimentaryDNArecords from the Polar Urals and northern Norway

Boreas ◽  
2018 ◽  
Vol 48 (2) ◽  
pp. 317-329 ◽  
Author(s):  
Youri Lammers ◽  
Charlotte L. Clarke ◽  
Christer Erséus ◽  
Antony G. Brown ◽  
Mary E. Edwards ◽  
...  
Keyword(s):  
Northern Norway ◽  
Polar Urals ◽  
The Polar Urals

scholarly journals Tournaisian deep-water deposits of the Usa River basin (Polar Urals)

2018 ◽  
Vol 13 (3) ◽  
Author(s):  
A.N. Plotitsyn ◽  
◽  
E.S. Ponomarenko ◽  
Ya.A. Ponomarenko ◽  
◽  
...  
Keyword(s):  
River Basin ◽  
Deep Water ◽  
Polar Urals ◽  
The Usa

scholarly journals U-Th-He Geochronology of Pyrite from Alteration of the Au-Fe-Skarn Novogodnee-Monto Deposit (Polar Urals, Russia)—The Next Step in the Development of a New Approach for Direct Dating of Ore-Forming Processes

Geosciences ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 408
Author(s):  
Olga Yakubovich ◽  
Ilya Vikentyev ◽  
Ekaterina Ivanova ◽  
Mary Podolskaya ◽  
Ivan Sobolev ◽  
...  
Keyword(s):  
Mass Fraction ◽  
Magmatic Activity ◽  
Skarn Deposit ◽  
Ore Formation ◽  
New Approach ◽  
Polar Urals ◽  
Alteration Halo ◽  
Ore Bodies ◽  
He Isotopes ◽  
Single Grain

We report on the application of the U-Th-He method for the direct dating of pyrite from the alteration halo of the Novogodnee-Monto Au-Fe-skarn deposit, Polar Urals. The deposit is genetically related to the formation of volcanogenic complexes of the Ural Paleozoic belt. A modification of the original methodology for measuring U, Th and He isotopes in a single grain allowed us to determine a U-Th-He age of 382 ± 8 Ma (2σ) based on six pyrite samples from the altered rocks of the deposit (U mass fraction ~0.2 mg/kg; Th/U ~ 3.5; 4He specific volume ~ 10−5 cm3·STP·g−1). This age is consistent with estimates of the age of ore formation and coeval with the end of the period of island arc magmatic activity. Our results indicate that U-Th-He dating for pyrite samples of ~1 mg in weight from the hydrothermal-metasomatic halo of ore bodies is possible, providing a crucial next step in the development of U-Th-He pyrite geochronology.

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