scholarly journals Pb-Pb and U-Pb Dating of Cassiterite by In Situ LA-ICPMS: Examples Spanning ~1.85 Ga to ~100 Ma in Russia and Implications for Dating Proterozoic to Phanerozoic Tin Deposits

Minerals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1166
Author(s):  
Leonid A. Neymark ◽  
Anatoly M. Larin ◽  
Richard J. Moscati
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Rare Metal ◽  
Ore Deposits ◽  
North East ◽  
Russian North ◽  
Tin Deposits ◽  
Comparison Of The Results ◽  
Tin Deposit

This paper investigates applicability of cassiterite to dating ore deposits in a wide age range. We report in situ LA-ICPMS U-Pb and Pb-Pb dating results (n = 15) of cassiterite from six ore deposits in Russia ranging in age from ~1.85 Ga to 93 Ma. The two oldest deposits dated at ~1.83–1.86 Ga are rare metal Vishnyakovskoe located in the East Sayan pegmatite belt and tin deposits within the Tuyukan ore region in the Baikal folded region. Rare metal skarn deposits of Pitkäranta ore field in the Ladoga region, Fennoscandian Shield are dated at ~1.54 Ga. Cassiterite from the Mokhovoe porphyry tin deposit located in western Transbaikalia is 810 ± 20 Ma. The youngest cassiterite was dated from the deposits Valkumei (Russian North East, 108 ± 2 Ma) and Merek (Russian Far East, 93 ± 2 Ma). Three methods of age calculations, including 208Pb/206Pb-207Pb/206Pb inverse isochron age, Tera-Wasserburg Concordia lower intercept age, and 207Pb-corrected 206Pb*/238U age were used and the comparison of the results is discussed. In all cases, the dated cassiterite from the ore deposits agreed, within error, with the established period of magmatism of the associated granitic rock.

Tourmaline from the Solnechnoe tin deposit, Khabarovsk Krai, Russia

2019 ◽  
Vol 84 (2) ◽  
pp. 245-265
Author(s):  
Ivan A. Baksheev ◽  
Marina F. Vigasina ◽  
Vasily O. Yapaskurt ◽  
Igor A. Bryzgalov ◽  
Nina V. Gorelikova
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Oxidation Potential ◽  
Khabarovsk Krai ◽  
Porphyry Deposits ◽  
Different Types ◽  
Deposit Type ◽  
Tin Deposits ◽  
Tin Deposit ◽  
Site Vacancy

AbstractTourmaline from the Solnechnoe hydrothermal granitoid-related tin deposit in the Khabarovsk Krai, Russian Far East has been studied with electron microprobe, infrared and Mössbauer spectroscopy. Tourmaline formed in three distinct stages with different types of chemical substitution. Tourmaline from the first unmineralised stage is classified as dravite or schorl, which could be enriched locally in Ca, the X-site vacancy and F. This tourmaline is characterised by the Fe ↔ Mg and X vacancy + Al ↔ Na + Fe substitutions. The second, molybdenum-stage tourmaline, is schorl–dravite and fluor-schorl–fluor-dravite enriched in Ca, and a few compositions belong to the calcic group. The predominant substitution is Ca + Mg ↔ Na + Al. The third, tin-stage tourmaline, is classified as schorl–dravite with some tourmalines being fluor-schorl, oxy-schorl, foitite and magnesio-foitite. The tin-stage tourmaline is characterised by the substitutions Fe2+ ↔ Mg, Altot + O2– ↔ Fe2+ + OH–, and Fe3+ ↔ Altot. An increase of the Fe3+/Fetot value from 3–9% in the molybdenum stage to 12–16% in the tin-stage tourmalines indicates an increase in oxidation potential, which possibly contributed to cassiterite deposition. Comparison of tourmalines from greisen, porphyry and intrusion-related tin deposits worldwide shows they differ in primary chemical substitutions so can be characterised by this mechanism. The Fe3+/Fetot value in tourmaline also appears to be one of the indications for the tin deposit type. The Fe3+/Fetot value increases from <10% in greisen tourmaline through 15% in tourmaline from intrusion-related deposits to 20% in tourmaline from porphyry deposits.

Checklist of oribatid mites (Acari, Oribatida) of the Russian Far East and Northeast of China

Zootaxa ◽  
2018 ◽  
Vol 4472 (2) ◽  
pp. 201 ◽  
Author(s):  
NIKOLAY A. RYABININ ◽  
DONG LIU ◽  
MEIXIANG GAO ◽  
DONG-HUI WU
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Historical Review ◽  
Oribatid Mites ◽  
The South ◽  
North East ◽  
The Far East ◽  
Late Tertiary ◽  
Northeast Of China ◽  
The Russian Far East

The present paper reviews the taxonomic studies of the mite suborder Oribatida in the Russian Far East South and Chinese North-East Territories. At present, 746 species of oribatid mites are registered in China, including 175 species in the soils of Northeast China. In the Russian Far East, there were 605 species of oribatids, including 344 species in the south of the Far East. The fauna of the oribatid mites of the Northeast of China and the south of the Russian Far East has 446 species and subspecies representing 190 genera and 80 families. 72 species of oribatid are common for both territories. The modern fauna of the oribatid mites of the Northeast of China and the south of the Far East was formed as a result of prolonged interaction between the boreal and palaearchaearctic faunas. The oribatid fauna of this region is distinguished by the presence of a large number of endemics, some of which are relics of the late Tertiary time and which can be considered as autochthonous. The checklist includes data from more than 100 locations of this enormous region. In addition, a short climatic and historical review of oribatid mites study is presented. 

In-bearing potential of tin‒sulfide mineralization in ore deposits of the Russian Far East

2016 ◽  
Vol 471 (1) ◽  
pp. 1118-1122 ◽  
Author(s):  
G. G. Pavlova ◽  
A. G. Vladimirov ◽  
V. I. Gvozdev ◽  
P. G. Korostelev ◽  
B. I. Semenyak ◽  
...  
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Ore Deposits ◽  
Tin Sulfide ◽  
Sulfide Mineralization ◽  
The Russian Far East

Complex mineralization at large ore deposits in the Russian Far East

2011 ◽  
Vol 53 (2) ◽  
pp. 140-155 ◽  
Author(s):  
A. A. Schneider ◽  
Yu. F. Malyshev ◽  
M. V. Goroshko ◽  
N. P. Romanovsky
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Ore Deposits ◽  
The Russian Far East

HISTORY AND PROSPECTS FOR DEVELOPMENT OF RUSSIAN-CHINESE INTERREGIONAL CROSS-BORDER COOPERATION IN THE FAR EAST

2020 ◽  
pp. 22-33
Author(s):  
A. L. Voronenko ◽  
S. V. Greyzik
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Cross Border ◽  
North East ◽  
The North ◽  
The Far East ◽  
Role Of The State ◽  
Energy Projects ◽  
Cross Border Cooperation

The article considers all stages of development of Russian-Chinese interregional cross-border cooperation in the Far East, from chaotic «shuttle trade» to large infrastructure and energy projects. The role of the state in structuring of interregional relations and subordinating them to common ideas is demonstrated with the use of programmatic approach. The implementation of the program of cooperation between the regions of the Far East, Eastern Siberia of the Russian Federation and the North-East of the People's Republic of China (2009-2018) and its significance for the further development of interregional cooperation between countries are ana-lyzed. The role of major infrastructure and energy projects, as well as territories of advanced socio-economic development in Russian-Chinese cross-border cooperation, is considered. The main aspects of the new Program for the Development of Russian-Chinese Cooperation in Trade, Economic and Investment fields in the Russian Far East for 2018-2024 are defined. The prospects for its implementation are estimated

Studies on Ramulus ussurianus (Bey-Bienko, 1960) (Phasmida: Phasmatidae)

Zootaxa ◽  
2021 ◽  
Vol 4941 (4) ◽  
pp. 587-593
Author(s):  
SERGEY YU. STOROZHENKO ◽  
TAEWOO KIM
Keyword(s):  
Sri Lanka ◽  
Russian Far East ◽  
Far East ◽  
Detailed Examination ◽  
The Philippines ◽  
East China ◽  
Type Specimens ◽  
Additional Material ◽  
North East ◽  
The Russian Far East

The phasmid genus Ramulus Saussure, 1862 belongs to the nominotypical tribe of subfamily Clitumninae of the Phasmatidae. This genus consists of 159 species distributed in India (21 species), Sri Lanka (6 species), Bhutan (1 species), Myanmar (6 species), Thailand (1 species), Vietnam (12 species), Malaysia (4 species from Peninsular part and Borneo), Indonesia (18 species from Java, Sumatra, Borneo, Sulawesi, and Key islands), the Philippines (3 species), China including Taiwan (74 species), Japan (1 species), Korea (1 species), and Russia (1 species) (Brock et al., 2021). Three phasmid species have been described in the genus Baculum Saussure, 1861 from the Russian Far East, Korea and North-East China respectively (Bey-Bienko, 1960; Kwon et al., 1992; Chen & He, 1994) and later transferred to the genus Ramulus (Otte & Brock, 2005). As a result of detailed examination of the type specimens of Ramulus ussurianus (Bey-Bienko, 1960), additional material and descriptions of these species, it became clear that specimens from Russia, Korea and North-East China are conspecific. 

Tin deposits of the Sikhote–Alin and adjacent areas (Russian Far East) and their magmatic association

2010 ◽  
Vol 57 (6) ◽  
pp. 777-802 ◽  
Author(s):  
V. G. Gonevchuk ◽  
G. A. Gonevchuk ◽  
P. G. Korostelev ◽  
B. I. Semenyak ◽  
R. Seltmann
Keyword(s):  
Russian Far East ◽  
Far East ◽  
Sikhote Alin ◽  
Tin Deposits ◽  
Magmatic Association

scholarly journals Тhe Growth of Smuggling of Excise Goods in the Eastern Russian Empire in the Early 20th Century

2020 ◽  
Author(s):  
Vladimir Sinichenko ◽  
◽  
Galina Tokarevа ◽  
Keyword(s):  
20Th Century ◽  
Police Officers ◽  
Russian Far East ◽  
Far East ◽  
Russian Empire ◽  
East China ◽  
Early 20Th Century ◽  
North East ◽  
Xix Century ◽  
The Russian Far East

The article states that after the introduction of customs in the Russian Far East in the late XIX century the growth of smuggling along the land and sea border in the Russian Far East began. Alcohol was the main smuggling commodity. For the production and subsequent smuggling of alcohol in the territory of North-East China — Manchuria, factories were created, which produced alcoholic products supplied both in Transbaikalia, and Priamurye and Primorye. A major role in countering smuggling was played by the ranks of the Korchem guards, who not only identified small smugglers — Chinese and Kazacks, but also detained representatives of Manchurian alcohol factories together with Russian police officers.

scholarly journals Results of studying wild relatives of the cultivated plants of Russia

2020 ◽  
Vol 65 (1) ◽  
Author(s):  
Irena Chukhina ◽  
Liliya Shipilina ◽  
Larisa Bagmet ◽  
Galina Talovina ◽  
Tamara Smekalova
Keyword(s):  
Russian Far East ◽  
In Situ Conservation ◽  
Far East ◽  
Wild Relatives ◽  
The State ◽  
Nature Reserves ◽  
Cultivated Plants ◽  
The Russian Far East ◽  
Comprehensive Studies

Issuing specific recommendations on the in situ conservation of wild relatives of cultivated plants (=crop wild relatives, CWR) in Russia is possible only on the basis of preliminary comprehensive studies of their composition, structure and features. N.I. Vavilov was the founder of comprehensive studies of cultivated plant relatives. O.N. Korovina was the first to substantiate the basic principles of conserving CWR diversity in their natural habitats, and to suggest choosing the most suitable conservation measures, taking into account the data on the distribution area of a taxon, the state of habitat condition, the state of the taxon in nature, and human influence. The current phase of studying CWR diversity and developing a domestic strategy for its conservation is associated with geopolitical changes in this country, and with the inclusion of research performed at VIR on CWR diversity in situ conservation into large-scale international projects. The fundamental conditions for attributing a wild species to relatives of cultivated plants are, first, taxonomic or evolutionary and genetic closeness to a cultivated species, and second, the use of species in breeding, or the potential introduction of a species into cultivation. The work on the compendium of wild relatives of cultivated plants of Russia is still far from completion. As a result of the inventory, a list of 1701 species of relatives of cultivated plants for food and agriculture was compiled. The largest number of species (965) grows in the European part of Russia. The Russian Caucasus ranks second in terms of CWR richness (956 species), and the third in CWR numbers is the Russian Far East (598 species). The 102 nature reserves included in the study contain 1363 CWR species. The CWR diversity is most effectively conserved in the nature reserve network of the Russian Far East and Eastern Siberia, and least of all in the nature reserves of the Russian Caucasus, despite the significant concentration of CWR species in this region.

Sign in / Sign up

Export Citation Format

Share Document