Количество страниц: 7 с.
The results of generalization and GIS integration of the results of the study of all known indigenous deposits and manifestations of diamonds located in the distributed and undistributed fund of the subsoil of the Russian Federation are presented. The work takes into account the results of prospecting, exploration and exploitation works, minutes of meetings of regional (TKZ) and federal (RKZ and GKZ) commissions on mineral reserves and published data. As a result, a GIS-integrated database was created containing 1,319 objects, for each of which key parameters were determined: coordinates, shape, size, age, average diamond content, forecast resources, and diamond reserves. It was established that the indigenous diamond deposits are concentrated in the Central Siberian subprovincia and account for 2.3 % of all known kimberlite bodies, diamond-bearing kimberlite bodies in the Yakut diamond-bearing province - 282, the predominant body shape is a pipe (59 %). There is no correlation between the size of kimberlite bodies and their diamond content, small pipes, as well as large diatremes, can be industrially diamondiferous, the prevailing absolute age of industrially diamondiferous kimberlites is 329-382 million years.
Шахурдина, Н. К. Геологическое картирование кимберлитового магматизма как фактурная оценка алмазоносных объектов Западной Якутии / Н.К. Шахурдина ; Акционерная компания "АЛРОСА" // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия "Науки о Земле". - 2024. - N 1 (33). - C. 68-74. - DOI: 10.25587/2587-8751-2024-1-68-74
DOI: 10.25587/2587-8751-2024-1-68-74
Количество страниц: 14 с.
The article presents the results of the study by various geologists of the geological structure and prospects of ore-bearing trog complexes performing structures such as throgs, which were identi ed at di erent stages of geological research in the western part of theAldan-Stanovy shield. The main types of traction complexes and their sections were determined. The nature of the occurrence of sedimentary (terrigenous), volcanogenic- sedimentary and metavolcanic rocks performing throgs and forming throg complexes was established. The nature of the ratio of these rocks in the context of the trog complex in the studied trogs was described. The results of the study of trog complexes showed that they are generally characterized by facies variability, heterogeneity of metamorphism and dynamothermal processing of rocks (especially in the sides of trogs) with the formation of mylonites and cataclasites. It was established that the throgs are con ned to three regional systems of discontinuous disturbances. Both consonantal and secant discontinuities were marked inside the throgs, de ning their block tectonics. The results of determining the geological age of the rocks of the trogovoi complex were presented. The trog structures are characterized by ore mineralization associated with the processes of sedimentation (ferruginous quartzites, copper sandstones) and volcanogenic ore formation (copper-crusted and polymetallic mineralization), as well as with the processes of metamorphogenic-hydrothermal redistribution of ore matter (stratiform scheelite mineralization, ore-bearing quartz veins). It was also found that the metallogeny of the trog structures has not been studied su ciently. Nevertheless, the majority of geologists who studied the trogovye complexes noted in their reports that Precambrian trogovye complexes can be considered as important and metallogenically promising geological objects in the western part of the Aldan-Stanovy Shield and deserve more in-depth study.
Пуляев, Н. А. Геологическое строение и металлогения докембрийских троговых структур Западной части Алдано-Станового щита / Н. А. Пуляев ; Северо-Восточный федеральный университет им. М. К. Аммосова, Геологоразведочный факультет // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: "Наука о земле" - 2024. - N 1 (33). - C. 39-52. - DOI: 10.25587/2587-8751-2024-1-39-52
DOI: 10.25587/2587-8751-2024-1-39-52
Количество страниц: 20 с.
A complex comparative study of diamonds from commercially productive diatremes of Daldyn- Alakitsky eld (Udachnaya, Zarnitsa) determined mineral typomorphic features, which allows diagnosing dispersion haloes of kimberlite material in sedimentary thick layers. By the set of typomorphic features, diamonds from Udachnaya pipe have many common features with crystals of other deposits of Daldyn-Alakitsky diamondiferous region. Increased content of variety II and III cubes, close by their features to diamonds from deep inclusions of eclogites, may be referred as inherent only to the Udachnaya pipe features. Zarnitsa pipe demonstarted pronounced prevalence of rhombic dodecahedral habit crystals of variety 1 with large concentration (> 30 %) of typically rounded diamonds. On the whole, diamonds of Daldyn eld are characterized by a complex of typomorphic features, which allow distinguishing them from diatremes of other diamondiferous regions of the Siberian platform with con dence.
Зинчук, Н. Н. Сравнительные особенности алмазов из кимберлитовых месторождений северной части Сибирской платформы / Н. Н.Зинчук, Л. Д. Бардухинов ; Академия наук Республики Саха (Якутия), Западно-Якутский научный центр // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: "Наука о земле". - 2024. - N 1 (33). - C. 11-30. - DOI: 10.25587/2587-8751-2024-1-11-30
DOI: 10.25587/2587-8751-2024-1-11-30
Количество страниц: 6 с.
Tick-borne encephalitis (TBE) is a natural focal viral infection that occurs with high fever and intoxication. It is characterized by damage to the gray matter of the brain and/or the membranes of the brain and spinal cord, with the development of meningitis, meningoencephalitis or encephalomyelitis. The disease can result in persistent neurological and psychiatric conditions, and even death. The carriers of tick-borne encephalitis are ixodid taiga ticks. This type of tick is especially proactive in the spring and summer, endangering adults and children. Infectioning of a person occurs after a tick bite. The causative agent of tick-borne encephalitis is a neurotropic, RNA-containing virus. Tick-borne encephalitis is characterized by increasing neurological symptoms. The symptoms after an encephalitis tick attack are very varied. There are 5 main forms of tick-borne encephalitis: febrile, meningeal, meningoencephalitic (occurs in 15 % of the country as a whole, and twice as often in the Russian Far East). To diagnose with tick-borne encephalitis, it is necessary to take into account clinical manifestations (damage to the central nervous system), epidemiological data (time of the year, presence of vaccination, fact of a tick bite) and laboratory methods of specific diagnosis. The Republic of Sakha (Yakutia) is not an endemic region for the spread of TBE. However, in recent years due to climate change, the number of ticks and bites in this area has increased. This article describes a case of TBE in a 6-year-old child. The disease was extremely severe and resulted in death. Despite the fact that TBE is an extremely rare pathology in our republic, screening for this pathology must be carried out during the tick season.
Клинический случай клещевого энцефалита уребенка 6 лет / Дмитриева Т. Г., Степанова О. С., Кожухова Ж. В. [и др.] ; Северо-Восточный федеральный университет им. М.К. Аммосова, Медицинский институт, ГБУ "Детская клиническая инфекционная больница" // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия "Медицинские науки". - 2024. - N 1 (34). - C. 21-26. - DOI: 10.25587/2587-5590-2024-1-21-26
DOI: 10.25587/2587-5590-2024-1-21-26
Количество страниц: 6 с.
The Elkon uranium-ore region is located in the upper reaches of the river Aldan of the Republic of Sakha (Yakutia) within the Elkon mountain range. The resource potential of the massif allows us to consider it as the largest reserve source of uranium, gold and many other minerals in Russia and the world. During the development of deposits, environmental problems arise, for example, the quality of watercourses. In this regard, it is important to study the algal flora, which are natural indicators of the qualitative state of the waters and study of the hydrochemical state of water. The results of field and laboratory hydrobiological and hydrochemical studies of the rivers of the study area are presented. For the first time, an inventory of phytoplankton and phytoperiphyton algae in the study area was carried out. It was revealed that the basis of the taxonomic spectrum of algal communities is formed by the algoflora of the Bacillariophyta division, Cyanobacteria are less diverse, Chlorophyta and Ochrophyta are single. Phytoplankton in all studied rivers is extremely poor in terms of the number of species, abundance and biomass. Hydrochemical studies have shown that the content of the majority of normalized ingredients in the studied watercourses of the river Aldan in the area of the Elkonsky horst is below the maximum permissible concentrations. There is a high content of petroleum products. In summer, a high content of sulfides in the water of the Neprokhodimyi stream, which flows into the river Kurung, is noted. This circumstance, as well as the very low levels of phytoplankton at the stations of the Propadajushij stream, are the result of many years of mining in the past years of polluted mountain dumps in the Kurung river basin. In general, it has been determined that the qualitative state of the rivers in the Aldan river basin within the Elkon uranium ore region is due to the low-temperature regime of the climate and waters, as well as the location in the area of discontinuous distribution of permafrost. The work was carried out according to the state task on the topic “Vegetation cover of the permafrost zone of the taiga Yakutia: biodiversity, habitat-forming functions, protection and rational use” (scientific topic code: FWRS-2021-0023; within the framework of the draft state task (No. FWRS-2021-0014) of the program in the priority area of the Program of Fundamental Scientific Research in the Russian Federation for the long term (2021-2030).
Николаева, Н. А. Гидробиологические и гидрохимические исследования водотоков верхнего течения реки Алдан Республики Саха (Якутия) / Николаева Н. А., Копырина Л. И. ; Институт биологических проблем криолитозоны // Успехи современного естествознания. - 2023. - N 8. - С. 54-59. - DOI: 10.17513/use.38088
DOI: 10.17513/use.38088
Количество страниц: 6 с.
- Математика. Естественные науки > Геология. Геологические и геофизические науки,
- Математика. Естественные науки > Общая геология . Метеорология. Климатология. Историческая геология. Стратиграфия. Палеогеография,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Геология. Геологические и геофизические науки.
One of the ways to obtain information about the cryogenic state of rocks by GPR is based on the analysis of the in-phase axes of signals reflected from local objects. On the images of GPR radargrams, similar in-phase axes are represented by hyperbolic curves. On the basis of their localization and refinement of the form, the speed of passage of an electromagnetic wave in the medium is determined. To refine the shape of the hyperbolic curve in the developed algorithm, methods based on the Hough transform were used. To optimize the performance of the algorithm, restrictions on the dimensions of the original and accumulator spaces are introduced. The boundaries of the original space were determined on the basis of previous studies on the detection of hyperbolic axes of common-mode signals. The dimension of the Hough space was reduced on the basis of a priori knowledge of the possible allowable speed of electromagnetic waves in the medium. As a result of the work of the created software, the speed of propagation of an electromagnetic wave in space above the local object and the real part of the complex relative permittivity are calculated, which makes it possible to determine the electrophysical properties of the medium. Testing of the developed algorithm was carried out on the results of field georadar measurements and synthetic data. The accuracy of the results of the algorithm was 98.6 %, which indicates the adequacy of its applicability for studying ice in permafrost layers.
Петрова, Е. А. Определение положения подземного льда в массиве мерзлых горных пород по данным георадиолокации на основе преобразования Хафа / Петрова Е. А., Соколов К. О., Прудецкий Н. Д. ; Северо-Восточный федеральный университет им. М. К. Аммосова, Институт горного дела Севера имени Н. В. Черского // Успехи современного естествознания. - 2023. - N 8. - С. 86-91. - DOI: 10.17513/use.38092
DOI: 10.17513/use.38092
Количество страниц: 16 с.
Пономарев, И. В. Новые данные о голоценовой фауне позвоночных бассейнов рек Лена (среднее течение) и Алдан (Якутия) по материалам археологических памятников (Джампа, Кузнец I, II Дабан-Юрях, Буор-Хая I, II, III) / И. В. Пономарев, Г. Г. Боескоров, В. М. Дьяконов ; Северо-Восточный федеральный университет им. М. К. Аммосова, Институт геологии алмаза и благородных металлов, Институт археологии и этнографии, Институт гуманитарных исследований и проблем малочисленных народов Севера // Амурский зоологический журнал. - 2023. - Т. 15 N 4. - С. 907-922. - DOI: 10.33910/2686-9519-2023-15-4-907-922
DOI: 10.33910/2686-9519-2023-15-4-907-922
Количество страниц: 4 с.
Сивцева, Л. В. Первая находка стрекозы Leucorrhinia albifrons (Burmeister, 1839) (Odonata: Libellulidae) в Якутии / Л. В. Сивцева, Е. Н. Зыков ; Институт биологических проблем криолитозоны // Амурский зоологический журнал. - 2022. - Т. 14 N 3. - С. 389-392. - DOI: 10.33910/2686-9519-2022-14-3-389-392
DOI: 10.33910/2686-9519-2022-14-3-389-392
Количество страниц: 13 с.
Ермакова, Ю. В. Прямокрылые насекомые (Orthoptera) Национального парка "Ленские Столбы" и сопредельных территорий (Россия, Якутия) / Ю. В. Ермакова ; Институт биологических проблем криолитозоны // Амурский зоологический журнал. - 2022. - Т. 14 N 2. - С. 199-211. - DOI: 10.33910/2686-9519-2022-14-2-199-211
DOI: 10.33910/2686-9519-2022-14-2-199-211
Количество страниц: 11 с.
Бурнашева, А. П. К фауне булавоусых чешуекрылых (Lepidoptera, Papilionoformes) особо охраняемых природных территорий Ленского района (Юго-Западная Якутия) / А. П. Бурнашева ; Институт биологических проблем криолитозоны // Амурский зоологический журнал. - 2020. - Т. 12 N 2. - С. 106-116. - DOI: 10.33910/2686-9519-2020-12-1-106-116
DOI: 10.33910/2686-9519-2020-12-1-106-116