Challenging Issues of the Earth’s History and the Central Asian and Circum-Pacific Tectonics, Geodynamics, and Metallogeny (on the 85th Birthday of Academician Nikolai L. Dobretsov)

2021 ◽  
Vol 62 (1) ◽  
pp. 1-5
Author(s):  
V.S. Shatsky ◽  
D.V. Metelkin
Keyword(s):  
Plate Tectonics ◽  
Gold Mineralization ◽  
Deep Structure ◽  
Russian Far East ◽  
Far East ◽  
Full Member ◽  
85Th Birthday ◽  
Central Asian ◽  
New Ideas ◽  
Key Issues

Abstract—This Special Issue celebrates the 85th birthday of Nikolai Leontievich Dobretsov, Full Member of the Russian Academy of Sciences. The opening paper presents a brief outline of the contributions related to the scientific interests of the hero, which, however, far transcend this limited scope. Hardly there is a field in geosciences where Nikolai Dobretsov would not leave a significant footprint. All over the course of his scientific carrier, he has been prolific in generating new ideas, which he shared generously with the colleagues and numerous disciples. Their papers published in this volume concern key issues of the deep structure and general evolution theory of the planet Earth, including various historic aspects of the geomagnetic field, its relation with the gravity field and with the periodicity of geologic processes, as well as global plate tectonics and plume activity through the Earth’s history. The problems of deep structure are discussed for the cases of the Central Asian Orogenic Belt and the magmatic system feeding the Kamchatka volcanoes. The volume is completed with several papers on metallogeny of the Central Asian orogen and the Russian Far East, especially gold mineralization, which was among principal subjects investigated by N. Dobretsov.

scholarly journals Gold in Mineralized Volcanic Systems from the Lesser Khingan Range (Russian Far East): Textural Types, Composition and Possible Origins

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 103
Author(s):  
Nikolai Berdnikov ◽  
Victor Nevstruev ◽  
Pavel Kepezhinskas ◽  
Ivan Astapov ◽  
Natalia Konovalova
Keyword(s):  
Iron Oxide ◽  
Subduction Zones ◽  
Gold Mineralization ◽  
Russian Far East ◽  
Far East ◽  
Volcanic Rocks ◽  
Liquid Immiscibility ◽  
Explosive Volcanism ◽  
Deep Roots ◽  
Scientific Debate

While gold partitioning into hydrothermal fluids responsible for the formation of porphyry and epithermal deposits is currently well understood, its behavior during the differentiation of metal-rich silicate melts is still subject of an intense scientific debate. Typically, gold is scavenged into sulfides during crustal fractionation of sulfur-rich mafic to intermediate magmas and development of native forms and alloys of this important precious metal in igneous rocks and associated ores are still poorly documented. We present new data on gold (Cu-Ag-Au, Ni-Cu-Zn-Ag-Au, Ti-Cu-Ag-Au, Ag-Au) alloys from iron oxide deposits in the Lesser Khingan Range (LKR) of the Russian Far East. Gold alloy particles are from 10 to 100 µm in size and irregular to spherical in shape. Gold spherules were formed through silicate-metal liquid immiscibility and then injected into fissures surrounding the ascending melt column, or emplaced through a volcanic eruption. Presence of globular (occasionally with meniscus-like textures) Cu-O micro-inclusions in Cu-Ag-Au spherules confirms their crystallization from a metal melt via extremely fast cooling. Irregularly shaped Cu-Ag-Au particles were formed through hydrothermal alteration of gold-bearing volcanic rocks and ores. Association of primarily liquid Cu-Ag-Au spherules with iron-oxide mineralization in the LKR indicates possible involvement of silicate-metallic immiscibility and explosive volcanism in the formation of the Andean-type iron oxide gold-copper (IOCG) and related copper-gold porphyry deposits in the deeper parts of sub-volcanic epithermal systems. Thus, formation of gold alloys in deep roots of arc volcanoes may serve as a precursor and an exploration guide for high-grade epithermal gold mineralization at shallow structural levels of hydrothermal-volcanic environments in subduction zones.

scholarly journals DIVERSITY OF INSECTS AND OTHER ARTHROPODS IN MONGOLIA

2020 ◽  
Author(s):  
B. Badamdorj ◽  
Keyword(s):  
Central Asia ◽  
Russian Far East ◽  
Far East ◽  
Far East Of Russia ◽  
Insect Fauna ◽  
The Far East ◽  
Central Asian ◽  
The Family ◽  
Darkling Beetles ◽  
The Russian Far East

The insect fauna of Mongolia includes about 12,000 species belonging to 24 orders. The only order, Orthoptera, is richer in species in Mongolia than in the Far East of Russia. All other units show greater diversity in the Russian Far East than in Mongolia. There are a significant number of very interesting endemics. Tizanuras of the family Machilidae are relic insects, represented by five species in Mongolia. As examples of widespread Central Asian insects, a number of species of darkling beetles and weevils can be indicated, most of which are endemic to Mongolia or Central Asia.

scholarly journals RUSSIA'S PARTICIPATION IN MULTILATERAL MECHANISMS IN EAST ASIA

2014 ◽  
pp. 20-26
Author(s):  
N. V. Stapran
Keyword(s):  
Cold War ◽  
Regional Cooperation ◽  
Russian Far East ◽  
Far East ◽  
Asia Pacific ◽  
Pacific Region ◽  
Asia Pacific Region ◽  
Full Member ◽  
Multilateral Cooperation ◽  
The Far East

After the end of the Cold War Russia has significantly increased its participation in multilateral mechanisms in the Asia-Pacific region and is clearly trying to become a significant player in regional institution-building. For two post-Cold War Russia decades was involved in almost all the basic mechanisms of multilateral cooperation in the Asia-Pacific region. However, often Russia isn't perceived by Asian partners as an equal participant in the Asia-Pacific region, it is felt particularly in the area of multilateral economic cooperation. Russia's entry into the WTO (2011) and the formation of the Common Economic stimulated Russia's engagement in multilateral economic structures. Russia's inclusion in the negotiating framework of ASEM (2010) and EAS (2011) perceives that Asian countries are willing to see Russia as a full member not only in regional processes, but also globally. The main stimulus for the revision of the Asian direction of foreign policy and the role of Siberia and the Far East appears during APEC summit in Vladivostok in 2012. The APEC summit demonstrated the geostrategic importance of the development of the Russian Far East and Siberia, as a key element of Russia's inclusion in the mechanisms of regional cooperation, on the other hand, it became clear that without the participation of foreign partners effective development of the Far Eastern territories is hardly possible. Large-scale investment and infrastructure projects in the Far East has already significantly revived the situation in the region opening new opportunities for multilateral cooperation.

Russian exports to China will rise as investment lags

2017 ◽  
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Infrastructure Investment ◽  
The West ◽  
Content Type ◽  
Chinese Investment ◽  
Central Asian ◽  
Private Investors ◽  
Exchange Programmes ◽  
The Russian Far East

Significance Russia's deepening ties with China over the last four years reflect Moscow's isolation from the West. Despite Moscow's efforts, the pace of Chinese investment in Russia has been slower than anticipated, but Russian oil and food exports are rising. Impacts Continued US and EU sanctions heighten the importance of attracting Chinese funding for Russian corporates. Russia will compete with Central Asian states for energy and OBOR-related investment. Attempts will be made to tap into a larger pool of Chinese private investors. The Russian Far East will benefit from Chinese industrial and infrastructure investment. Exchange programmes will improve understanding of legislative, business, educational and cultural contexts in both countries.

Sphaerotheca mors-uvae. [Distribution map].

1975 ◽  
Author(s):  
Keyword(s):  
North America ◽  
Northern Ireland ◽  
Russian Far East ◽  
Far East ◽  
Distribution Map ◽  
East Europe ◽  
Central Asian ◽  
Ribes Spp ◽  
Central Asian Republics ◽  
New Distribution

Abstract A new distribution map is provided for Sphaerotheca mors-uvae (Schw.) Berk. & Curt. Hosts: Ribes spp. Information is given on the geographical distribution in AFRICA, Rhodesia, ASIA, Japan, Korea, USSR (Central Asian Republics and Russian Far East), EUROPE, Austria, Belgium, Britain & Northern Ireland, Bulgaria, Czechoslovakia, Denmark, Finland, France, Germany, Greece, Hungary, Irish, Republic Italy, Netherlands, Norway, Poland, Romania, Sweden, Switzerland, USSR (General), NORTH AMERICA, Canada (general), USA (inc. Alaska).

scholarly journals Russia and China in the 21st century. Moving towards cooperative behaviour

2017 ◽  
Vol 8 (2) ◽  
pp. 136-150 ◽  
Author(s):  
Silvana Malle
Keyword(s):  
Strategic Alliance ◽  
Political Competition ◽  
Russian Far East ◽  
Far East ◽  
The United States ◽  
Military Exercises ◽  
Security Treaty ◽  
Central Asian ◽  
Shanghai Cooperation Organisation ◽  
The One

Political and economic rapprochement is taking place between Russia and China in a number of fields: energy, arms production, trade in national currencies and strategic projects in transport and supporting infrastructure. This development, fostered by Western policies and actions, including sanctions related to Ukraine, appears to be strengthening despite reservations related to uneasy precedents, contrasting visions and uncertain economic projections. Chinese policies aiming at European markets via the revival of the Silk Road assist this development. The One Belt-One Road is projected as an alternative, or supplement, to the maritime routes made unsafe by contiguous countries’ unrest, criminality and the assertive control of the seas by the United States. While Russia, promoting friendly investment structures, moves eastwards to develop the Russian Far East bordering China, the latter expands westwards engaging in laborious negotiations with Central Asian countries and costly investments in infrastructure and logistics. In each area, the article maintains that both countries, despite economic and political competition and fear of losing control, have interest in cooperation and discusses the areas where this is taking place, albeit slowly and with difficulty. Whether economic cooperation can develop into a strategic alliance including defence is discussed in the light of joint military exercises, arms trade and plans to broaden the scope of the Collective Security Treaty Organisation, the Shanghai Cooperation Organisation (of which India and Pakistan have recently become members), and the Common ASEAN Community. This path is difficult and marred by members’ conflicting interests. But some positive outcomes should not be ruled out.

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.

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