scholarly journals Tectonic and magmatic factors of Li-F granites localization of the East of Russia

2021 ◽  
Vol 248 ◽  
pp. 173-179
Author(s):  
Viktor Alekseev
Keyword(s):  
Rare Metal ◽  
Heat Sources ◽  
Geological History ◽  
The North ◽  
Deep Layers ◽  
History Of ◽  
Far Eastern ◽  
Source Structure ◽  
Main Factor

We have investigated tectonic and magmatic factors of Li-F granites localization of the East of Russia. The study is based on the ideas of Far Eastern geologists about the deep structures of intraplate activity. A model of a source structure with mantle heat sources and ore-forming magmatic complexes was used. We carried out a special metallogenic analysis of the East of Russia as applied to the rare metal-tin-bearing formation of subalkaline leucogranites, including Li-F ones. Source structures are the main factor in the tectonic and magmatic development of the East of Russia, localization of ore-forming granites and the formation of rare-metal-tin ore regions. On deep layers of source structures there are areas of the mantle and earth's crust decompaction, heat, magmas and fluids sources, as well as granitoid cryptobatholiths. Relatively large massifs of leucogranites, small intrusions of tin monzonitoids and Li-F granites are concentrated near the modern surface. The source structures correspond to the rank of the ore region. The source structures in the South of the region are: Badzhalskaya, Miao-Chanskaya, Ippato-Merekskaya, Hogdu-Lianchlinskaya, Arminskaya, etc.; in the North: Pevekskaya, Kuiviveem-Pyrkakayskaya, Kuekvun-Ekiatapskaya, Iultinskaya, Telekayskaya, Central Polousnaya, Omsukchanskaya, etc. Three types of ore regions have been identified according to the degree of source structures and Li-F granites erosion. We have also outlined the patterns of source structures evolution and their place in the geological history of ore-bearing granites. A classification of source structures and its comparison with the classifications of regional intrusives and metallogenic subdivisions are proposed. It has been established that, despite the diversity of tectonic, geological and petrological settings in the East of Russia, the intrusions of Li-F granites are regulated by the same tectonic and magmatic factors. The tectonic and magmatic factors of Li-F granites localization in the East of Russia are identified and classified as geophysical, orogenic, geoblock, magmatic, metasomatic and disjunctive.

Geoinformation Mapping Through the Types of Geological and Geomorphological Structure of the Katun Valley (Altay Mountains) Based on Morphometric Indicators

2018 ◽  
Vol 938 (8) ◽  
pp. 38-43
Author(s):  
S.A. Kotler ◽  
I.D. Zolnikov ◽  
D.V. Pchelnikov
Keyword(s):  
Morphometric Parameters ◽  
Morphometric Parameter ◽  
Geological History ◽  
Mountain Rivers ◽  
Quaternary Period ◽  
Modern Variety ◽  
Altay Mountains ◽  
History Of

The types of geological and geomorphological structure of the Katun valley are distinguished in the work. For this, a method of geoinformation mapping using morphometric indicators of the valley’s width and meandering of the channel was developed. The morphometric parameter of the valley’s width was calculated as the total area of terraces. As the morphometric parameters of the channel’s meandering, the angles of the river segments’ deviation relative to each other were calculated. Conjugated analysis of these morphometric indicators enabled identifying 18 morphotypes. These morphotypes according to the geological and geomorphological structure of the valley were combined into 4 classes. Separation of the Katun valley in certain classes and morphotypes is due to the different geological history of these sites during the Quaternary period. The most important reasons predetermining the modern variety of geological and geomorphological types of the valley are neotectonic movements and exogenous phenomena (glaciers, dam lakes, landslides, etc.) naturally localized in the space from the upstream of the river to its exit into the foothills. The developed method can be applied for quantitative morphometric classification of the mountain rivers’ valleys in other regions.

scholarly journals Pictures in the Soviet Northern discourse of the 30s (based on the materials of the newspaper «Khanty-Mansi Shop (Shoy) / Ostyako-Vogulskaya Pravda»)

2021 ◽  
Vol 11 (3) ◽  
pp. 584-597
Author(s):  
А. G. Kiselev ◽  
◽  
S. V Onina ◽  
Keyword(s):  
Visual Arts ◽  
The North ◽  
Academic History ◽  
Visual Approach ◽  
History Of ◽  
The Subject ◽  
History Of Journalism ◽  
Visual Range

Introduction: a notable phenomenon of modern historiography is the visual turn, which presupposes the study of history as the history of images. The subject of the research is the images published in the newspaper «Khanty-Mansi Shop (Shoy). Ostyako-Vogulskaya Pravda» in 1931–1939. Objective: presentation of the ethno-cultural segment of the visual range of the newspaper and on this basis the determination of its communicative capabilities in relations with the viewer-reader from among the indigenous peoples of the North. Research materials: newspaper images, works of theorists and practitioners of the photo department, party documents of the pre-war period. Results and novelty of the research: the classification of ethno-images is given; the connection between the dynamics of their publication and the socio-political trends in the country’s development has been clarified. As a common feature of ethno-images, their conventionality and simplicity are shown, which correlates with the peculiarities of the «northern style» in the visual arts of the Ob Ugrians. The weakness of the visual range is shown, which hindered the transformation of the newspaper into a mass, nationally oriented publication. The scientific novelty is determined both by the visual approach itself, and by the introduction into scientific circulation of a complex of images of the Ostyako-Vogul newspaper; observations and conclusions can be used in the preparation of the corresponding section of the academic history of Yugra, as well as special courses on the history of journalism.

VII.—The Glaciation of the Don and Dearne Valleys

1904 ◽  
Vol 1 (11) ◽  
pp. 546-551
Author(s):  
W. Lower Carter
Keyword(s):  
Water Flow ◽  
Geological History ◽  
Glacial Period ◽  
North East ◽  
The North ◽  
History Of

In studying the geological history of the rivers of the Don system, my attention was specially directed to the evidences of glacial action in the area, with the object of ascertaining whether glaciation had anything to do with the interesting diversions of the Don, Dearne, and Dove. Certain valleys in the area, also, attracted my attention as possessing abnormal features with respect to the present drainage of the district, and I began to inquire what their relations might be to an altered system of drainage during the Glacial Period. The present paper is an attempt to piece together the scattered glacial evidence, and to ascertain the effect that the advance of a glacier from the north and north-east would have on the drainage of this district, and how far the present valleys would help to explain the water-flow under such conditions.

Cenozoic clinoform complexes and geological history of the North-Chukchi basin (Chukchi sea, Arctic)

2019 ◽  
pp. 11-19
Author(s):  
S. I. Freiman ◽  
A. M. Nikishin ◽  
E. I. Petrov
Keyword(s):  
Late Miocene ◽  
Chukchi Sea ◽  
Sedimentary Cover ◽  
Geological History ◽  
Present Stage ◽  
The North ◽  
Model Interpretation ◽  
History Of

New sesmostratigraphic model has been established for the sedimentary cover of the North-Chukchi basin. Based on the model interpretation of the main paleogeographic events within the territory was performed. We identify three stage in the post-rift sedimentary history of the North-Chukchi basin: Late Cretacerous to Paleocene stage when strong progradation of shelf sedimentary packages was occurred, Mid Eocene — Miocene, with gradual infilling of the basin from different sides and Late Miocene to Present stage with present shapes of the shelf and slow clinoform complex aggradation.

IV.—The Recent Geological History of the Baltic and Scandinavia and its importance in the Post-Tertiary History of Western Europe

1918 ◽  
Vol 5 (8) ◽  
pp. 354-367 ◽  
Author(s):  
Henry H. Howorth
Keyword(s):  
Western Europe ◽  
Geological History ◽  
North West ◽  
The North ◽  
General Geology ◽  
History Of ◽  
The Baltic ◽  
Geological Magazine

Some years ago I was allowed to publish in the Geological Magazine some papers on the recent geological history of the Baltic, in which I tried to bring before English readers the very important discoveries of the Northern geologists as affecting the general geology of the north-west of Europe and to extend their deductions. I was obliged to interrupt them for other work. Perhaps you will allow me to continue them some steps further, as we had reached a stage of some interest.

Geological history of the north-eastern ring plain of Ruapehu volcano, New Zealand

1996 ◽  
Vol 34-36 ◽  
pp. 21-28 ◽  
Author(s):  
Shane J. Cronin ◽  
Vincent E. Neall ◽  
Alan S. Palmer
Keyword(s):  
New Zealand ◽  
Geological History ◽  
The North ◽  
North Eastern ◽  
History Of ◽  
Ruapehu Volcano
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