Age and Genesis of the Pokrovskoe Gold–Silver Deposit (Russian Far East)

2021 ◽  
Vol 62 (1) ◽  
pp. 134-143
Author(s):  
A.A. Sorokin ◽  
A.Yu. Kadashnikova ◽  
A.V. Ponomarchuk ◽  
A.V. Travin ◽  
V.A. Ponomarchuk
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Volcanic Complex ◽  
Silver Deposit ◽  
Volcanic Zone ◽  
Granitoid Magmatism ◽  
Gold Silver ◽  
Igneous Complexes

Abstract ––We present results of geochronological studies of rocks from different igneous complexes and of hydrothermally altered volcanics with Au–Ag mineralization from the Pokrovskoe deposit. The age of the ore-hosting granites of the Sergeevsky pluton of the Upper Amur complex is estimated at ~129 Ma. The primary age of dacites of a sill-like body is within 128–125 Ma and is close to the age of volcanics of the Taldan complex. Propylitization processes superposed on these dacites are dated at ~122–119 Ma. Taking into account the commercial contents of gold and silver in these rocks, we believe that the age of the hosted orebodies is in the same interval. The period 122–119 Ma is also the time of formation of the Gal’ka volcanic complex in the Umlekan volcanic zone, which was accompanied by granitoid magmatism. This suggests that the formation of the Pokrovskoe deposit was associated with the accumulation of the Gal’ka complex.

U-Pb isotope dating of igneous complexes from the milogradovo gold-silver deposit (Southern Primor’e)

2010 ◽  
Vol 433 (1) ◽  
pp. 879-886
Author(s):  
V. G. Sakhno ◽  
F. I. Rostovskii ◽  
A. A. Alenicheva
Keyword(s):  
Silver Deposit ◽  
Pb Isotope ◽  
Gold Silver ◽  
Igneous Complexes ◽  
Isotope Dating

scholarly journals Radiocarbon Dating of Large Holocene Volcanic Events Within South Kamchatka (Russian Far East)

Radiocarbon ◽  
2007 ◽  
Vol 49 (2) ◽  
pp. 1065-1078 ◽  
Author(s):  
Natalia E Zaretskaya ◽  
Vera V Ponomareva ◽  
Leopold D Sulerzhitsky
Keyword(s):  
Radiocarbon Dating ◽  
Russian Far East ◽  
Far East ◽  
Kamchatka Peninsula ◽  
Volcanic Zone ◽  
Data Set ◽  
Kurile Islands ◽  
Volcanic Events ◽  
Tephra Layers ◽  
Tephra Beds

Radiocarbon dating is widely used when studying recent volcanic activity in the Kamchatka Peninsula due to the abundance of organic matter that is associated with the volcanic deposits. Here, we present the results of 14C dating of major volcanic events within the active South Kamchatka volcanic zone. South Kamchatka includes 8 recently active volcanic centers (stratovolcanoes, calderas, and large craters) that have been erupting during the Holocene. Their tephras represent useful markers for both the southern part of the peninsula and the Northern Kurile Islands. Since these marker tephra layers facilitate stratigraphic and tephrochronological studies in this area, it was important to determine their ages. We have obtained 73 new individual 14C dates on paleosol, peat, charcoal, and wood associated with the marker tephra layers, then complemented these data with 37 earlier published dates and analyzed the resulting data set. We selected the reliable dates and then obtained average 14C ages of marker tephra layers. The details of these procedures, as well as brief descriptions of South Kamchatka Holocene eruptions and their tephra beds, are presented in the paper.

scholarly journals 40Ar/39Ar age of the gold-silver Burinda deposit and its relationship to magmatism (north-eastern part of the argun superterrane)

2019 ◽  
Vol 485 (3) ◽  
pp. 321-325
Author(s):  
I. V. Buchko ◽  
А. А. Sorokin ◽  
V. А. Ponomarchuk ◽  
А. V. Travin
Keyword(s):  
Volcanic Complex ◽  
Silver Deposit ◽  
Eastern Asia ◽  
Hydrothermal Processes ◽  
Gold Silver ◽  
North Eastern ◽  
North Eastern Part

It was established that the age of hydrothermal ore metasomatites of the Burinda gold-silver deposit, one of the most famous in eastern Asia, can be estimated in the interval 126-128 Ma. It is shown that the formation of this deposit is due to hydrothermal processes in the final stages of the formation of the Taldan volcanic complex.

scholarly journals SILICATE, IRON OXIDE AND COPPER-GOLD-SILVER MICROSPHERULES IN ORES AND PYROCLASTICS OF THE KOSTENGINSKOYE IRON ORE DEPOSIT (RUSSIAN FAR EAST)

2021 ◽  
Vol 40 (3) ◽  
pp. 67-84
Author(s):  
N.V. Berdnikov ◽  
◽  
V.G. Nevstruev ◽  
P.K. Kepezhinskas ◽  
V.O. Krutikova ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Russian Far East ◽  
Far East ◽  
Liquid Immiscibility ◽  
Volcanic Origin ◽  
Gold Silver ◽  
Copper Gold ◽  
Noble Metal Mineralization ◽  
Rapid Ascent ◽  
Iron Ore Deposit

Iron-oxide ores and pyroclastics from the Kostenginskoye deposit in the Malyi Khingan (Russian Far East) contain numerous silicate, iron-oxide, and copper-gold-silver microspherules. Silicate spherules are composed of immiscible iron- and silica-rich glasses, gas cavities and mineral inclusions. Iron-oxide spherules include magnetite with minor ilmenite and Fe-rich silicate glass. Copper-gold-silver spherules contain inclusions predominantly of copper oxide compositions. The studied microspherules are considered to have formed during the rapid ascent of metal-silicate melts from depth and their degassing controlled by liquid immiscibility differentiation. The paper discusses the possible volcanic origin of iron-oxide ores and the associated noble metal mineralization for the deposits of this type.

Selection of the Area of Window Openings of Residential Buildings in Conditions of Monsoon Climate of the Far East of the Russian Federation and Northern Areas of China

2019 ◽  
pp. 27-33
Author(s):  
Aleksei K. Solovyov ◽  
Bi Guofu
Keyword(s):  
Residential Buildings ◽  
Russian Far East ◽  
Far East ◽  
Heat Losses ◽  
Natural Light ◽  
Monsoon Climate ◽  
Northern Areas ◽  
Artificial Illumination ◽  
Heat Penetration ◽  
Large Heat

The term “window” in architecture usually stands for an opening in a wall or roof for penetration of natural light, sunrays and fresh air in premises. Recently, the requirement of contact with environment is added to this condition. It is especially relevant for residential buildings where rooms are considered residential if they have windows. The energy consumption of a building depends on sizes, form and location of windows. In winter, windows cause huge heat losses, in summer, on the other hand, large heat enters a building via the windows and is required to be removed by means of air conditioning. Moreover, windows are used for penetration of natural light in premises, which assists in saving of large amounts of power for artificial illumination. This article discusses partial solving the problem of the energy efficiency of residential buildings by determining the most efficient area of windows in terms of energy spending for compensation of heat losses via windows in winter, elimination of heat penetration through them in summer and energy losses for artificial lighting throughout the year. The analysis of the results of calculation of power consumption for residential premises in conditions of monsoon climate of the Russian Far East and Northern areas of China (PRC) is provided.

Tax debt as a threat to the economic security of the Russian Far East

2020 ◽  
Vol 13 (2) ◽  
pp. 216-242
Author(s):  
V.A. Yakimova ◽  
A.A. Orekhova
Keyword(s):  
Russian Far East ◽  
Consumer Price Index ◽  
Far East ◽  
Federal District ◽  
Economic Security ◽  
Factors Affecting ◽  
Correlation And Regression Analysis ◽  
Debt Collection ◽  
Far Eastern ◽  
The Russian Far East

Subject. The article addresses the tax liabilities of taxpayers registered in the subjects of the Far Eastern Federal District, which should be paid to the consolidated budget of the Russian Federation, as well as the factors of the said debt growth. Objectives. Our aim is to assess the level of tax debt of regions of the Russian Far East and identify the correlation between the factors and the amount of tax debt. Methods. The study rests on methods of analysis, generalization, grouping, systematization, and the correlation and regression analysis. Results. We analyzed the level of tax debt for the entire Far Eastern Federal District and by region, identified factors affecting the growth of tax debt therein. The paper assesses the structure of tax debt by type of taxes and activity of debtors. The unveiled factors may help control changes in the size of tax debt in the Russian Far East and develop effective measures to improve the debt collection. Conclusions. The study shows that there is an increase in the tax debt in the regions of the Russian Far East, in the VAT in particular. The factor analysis revealed that the volume of sales of wholesale enterprises, investment in fixed capital, the consumer price index have the largest impact on the amount of tax debt.

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