scholarly journals Genetic and phenotypic diversity of rare species of genus Iris L in the Southern Urals

2020 ◽  
Author(s):  
E. V. Mikhaylova ◽  
A. N. Mustafina
Keyword(s):  
Genetic Markers ◽  
Rare Species ◽  
Phenotypic Diversity ◽  
Southern Urals ◽  
The Southern Urals ◽  
Iris Pumila ◽  
First Time

We studied 11 populations of rare species Iris pumila and I. scariosa in Southern Urals. Sequencing of four different genetic markers was performed for the first time.

scholarly journals New records of lichens and allied fungi from the Kostroma Region, Russia

2019 ◽  
Vol 56 ◽  
pp. 53-62 ◽  
Author(s):  
Irina Urbanavichene ◽  
Gennadii Urbanavichus
Keyword(s):  
Rare Species ◽  
Nature Reserve ◽  
New Records ◽  
Conservation Status ◽  
Federal District ◽  
Southern Urals ◽  
The Southern Urals ◽  
Central Federal District ◽  
Data Book ◽  
First Time

29 species of lichens, 3 non-lichenized calicioid fungi and 3 lichenicolous fungi are reported for the first time from the Kostroma Region. Among them, 15 species are new for the Central Federal District, including Myrionora albidula – a rare species with widely scattered locations, previously known only from the Southern Urals Mts in European Russia. The most important discoveries are confined to old-growth coniferous Picea sp. and Abies sibirica forests in the Kologriv Forest Nature Reserve. Two species (Leptogium burnetiae and Menegazzia terebrata) are included in the Red Data Book of Russian Federation. The distribution, ecology, taxonomic characters and conservation status of rare species and of those new for the Central Federal District are provided.

scholarly journals The First Find of Cr2O3 Eskolaite Associated with Marble-Hosted Ruby in the Southern Urals and the Problem of Al and Cr Sources

Minerals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 101
Author(s):  
Aleksander Kissin ◽  
Irina Gottman ◽  
Sergei Sustavov ◽  
Valery Murzin ◽  
Daria Kiseleva
Keyword(s):  
Granite Gneiss ◽  
Southern Urals ◽  
X Ray Diffraction ◽  
The Southern Urals ◽  
Near Surface ◽  
X Ray ◽  
Gneiss Domes ◽  
Electron Probe Microanalyzer ◽  
Formation Zone ◽  
First Time

The results of the study of eskolaite associated with marble-hosted ruby found for the first time in the Kuchinskoe occurrence (Southern Urals) are presented. Here, eskolaite was located on the surface and near-surface regions of ruby crystals. Eskolaite diagnostics was confirmed by powder X-ray diffraction (URS-55). The morphology and chemical composition of eskolaite and associated ruby was studied using a JSM-6390LV scanning electron microscope and a Cameca SX 100 electron probe microanalyzer. The eskolaite crystals were hexagonal and tabular, up to 0.2 mm in size. Ruby mineralization was formed during prograde and retrograde dynamothermal metamorphism. The eskolaite associated with the prograde stage ruby contained Al2O3 (9.1–23.62 wt %), TiO2 (0.52–9.66 wt %), V2O3 (0.53–1.54 wt %), FeO (0.03–0.1 wt %), MgO (0.05–0.24 wt %), and SiO2 (0.1–0.21 wt %). The eskolaite associated with the retrograde stage ruby was distinguished by a sharp depletion in Ti and contained Al2O3 (12.25–21.2 wt %), TiO2 (0.01–0.07 wt %), V2O3 (0.32–1.62 wt %), FeO (0.01–0.08 wt %), MgO (0.0–0.48 wt %), and SiO2 (0.01–0.1 wt %). The associated rubies contained almost equal amounts of Cr2O3 (2.36–2.69 wt %) and were almost free from admixtures. The identification of the eskolaite associated with the marble-hosted rubies from the Kuchinskoe occurrence is a new argument in favor of introduction of Al and Cr into the mineral formation zone. The mineralization was localized in the metamorphic frame of the granite gneiss domes and was formed synchronously with them.

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 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.

First data on lichens of Zyuratkul National Park (Chelyabinsk Region)

2011 ◽  
Vol 45 ◽  
pp. 223-236 ◽  
Author(s):  
I. N. Urbanavichene
Keyword(s):  
Eastern Europe ◽  
National Park ◽  
Southern Urals ◽  
The Urals ◽  
The Southern Urals ◽  
Chelyabinsk Region ◽  
First Time ◽  
Lichen Flora

The first data on the lichen flora of Zyuratkul National Park (Chelyabinsk Region) are provided. The preliminary list includes 263 species of lichens and allied fungi. Parmelia barrenoae and Pyxine sorediata were found for the first time for the Eastern Europe, 22 species are new for the Urals and 23 for the Southern Urals.

scholarly journals Ontogenesis of Prunus pumila and Rosa glauca Pourr. in introduced populations in the Southern Urals and Western Siberia

2019 ◽  
pp. 86-93
Author(s):  
O. Yu. Vasilyeva ◽  
M. S. Lezin ◽  
M. V. Kozlova
Keyword(s):  
Western Siberia ◽  
Southern Urals ◽  
Forest Steppe ◽  
The Southern Urals ◽  
Introduced Populations ◽  
Natural Range ◽  
Seed Origin ◽  
First Time ◽  
Continental Climate

The article presents for the first time the results of studying the ontogenesis of Prunus pumila L. and Rosa glauca Pourr. seed origin when growing plants outside the natural range in the continental climate of the Southern Urals and forest-steppe of Western Siberia. The marker features of ontogenetic states of Rosa glauca in the process of forming shrub biomorphe are described. It has been noted that Prunus pumila in juvenile and immature state develops at an accelerating pace and form a powerful area of the hypocotyls and root neck, which defines further processing of the rootstock quality.

Finding a rare species of Golden algae Chrysosphaerella coronacircumspina var. grandibasa in the South Urals

2021 ◽  
pp. 65-70
Author(s):  
Larisa V. Snit`ko ◽  
Vladimir P. Snit`ko
Keyword(s):  
Rare Species ◽  
National Park ◽  
Conservation Status ◽  
Southern Urals ◽  
High Water ◽  
Limiting Factors ◽  
Specific Electrical Conductivity ◽  
South Urals ◽  
The South ◽  
The Southern Urals

A rare species of Golden algae Chrysosphaerella coronacircumspina var. grandibasa was first discovered in the South Urals. The habitat of this rare species is high-altitude reservoirs with high water quality. Reservoirs located in the protected area of the «Taganay» national Park. C. coronacircumspina var. grandibasa vegetated during the subglacial period and after ice melting under conditions of oligotrophy, low specific electrical conductivity of water, low content of humic substances and neutral active reaction рН. The established conservation status of «Vulnerable species» VU(3) has been confirmed for the South Ural population of the rare chrysosphaerella. Low level of mineralization, oligotrophic water level, low temperature, and high water transparency have been confirmed as limiting factors for the development of South Ural populations of rare algae Chrysosphaerella. The results obtained Supplement information about the flora of Golden algae in Russia, the Urals, the southern Urals, and the «Taganay» national Park and can be used in environmental monitoring.

scholarly journals Trace-elements in minerals from unusual rocks of the Southern Urals

LITOSFERA ◽  
2019 ◽  
pp. 269-292
Author(s):  
V. G. Korinevsky ◽  
K. A. Filippova ◽  
V. A. Kotlyarov ◽  
E. V. Korinevsky ◽  
D. A. Artemyev
Keyword(s):  
Trace Elements ◽  
Southern Urals ◽  
Petrographic Analysis ◽  
The Southern Urals ◽  
Chemical Homogeneity ◽  
Icp Ms ◽  
Wide Range ◽  
Host Rocks ◽  
First Time

Research subject. This articles presents the data obtained in the course of 75 analytical studies on a wide range of minerals (amphiboles, pyroxenes, garnets, spinels, olivines, anorthites, corundums, epidotes, apatites, clinochlore, dolomite, calcite, zircon) contained in igneous and metamorphic Southern Urals rocks. In addition, information is provided about the content of trace elements, including rare earth (REE) ones, in these rocks. The data on the content of trace elements in some minerals are presented for the first time (höegbomite, sapphirine, zoisite, clinozoisite, gedrite, cummingtonite, anthophyllite, potassium-magnesiohastingsite). Materials and methods. A petrographic analysis of rocks containing the minerals under study was carried out. A particular attention was paid to petrographic analysis of rocks containing the minerals under study was carried out. A particular attention was paid to “fresh” rocks, containing the mineral under study which rarely occur in the Urals. These rocks feature inclusions of serpentinite melange in the form of plates and lenses among the metamorphic strata (schists, gneisses, and amphibolites) and are characterized by the preservation of primary structures, relative chemical homogeneity, as well as the presence of simultaneous growth surfaces between most minerals. Of particular research interest were minerals from rocks, the composition of which had been relatively poorly studied (pyroxene-amphibole anorthite gabbro and gabbro-amphibolites, scapolite rocks, hornblendite, gedrite-cummingtonite-anthophyllitic crystallo-schists and amphibolites, ore-less carbonatites). The composition of mineral samples was determined using a scanning microscope REMMA-202 M equipped with an energy dispersive console and a mass-spectrometer Agilent 7700x (ICP-MS and LA-ICP-MS methods). Results. Petrographic characteristics of the rocks containing the minerals under study are given. The geographical coordinates of locations, where mineral sampling was performed, are provided. The content of trace elements is shown to vary greatly within related species of minerals (amphiboles, garnets, pyroxenes, olivines, epidotes, spinels, mica, etc.), with the fluctuations being independent of the alkalinity of host rocks or their geological nature.Conclusions. For the first time, a significant role of zoisite and clinozoisite in the process of concentrating trace elements, including REE, has been revealed. The role of apatite as one of the main mineral concentrators of REE has not been confirmed either in the main and ultrabasic rocks, or in some calcite-dolomite carbonatites. 

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