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Elemental Composition of Bottom Sediments and Permafrost Deposits from Buor-Khaya Bay (Laptev Sea) 布奥尔哈亚湾（拉普捷夫海）海底沉积物和永久冻土沉积物的元素组成
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-06-05 DOI: 10.3103/s0145875224700054
A. S. Ulyantsev, N. V. Polyakova
{"title":"Elemental Composition of Bottom Sediments and Permafrost Deposits from Buor-Khaya Bay (Laptev Sea)","authors":"A. S. Ulyantsev, N. V. Polyakova","doi":"10.3103/s0145875224700054","DOIUrl":"https://doi.org/10.3103/s0145875224700054","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The paper summarizes data on the lithological and elemental composition of bottom sediments and permafrost from boreholes 1D-14, 3D-14, and 1D-15 drilled from shore ice in Buor-Khaya Bay in 2014–2015. Based on the determined percentage content of SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, Fe<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub>, MgO, Na<sub>2</sub>O, K<sub>2</sub>O, CaO, MnO, P<sub>2</sub>O<sub>5</sub>, Cl, Cr, S, Ni, Cu, Zn, Rb, Sr, Ba, Y, Zr, and C<sub>org</sub> in sediments, the values of lithochemical moduli were calculated, and a comparative analysis of the lithological and geochemical composition was performed. Differences in the lithochemical composition between the coastal (1D-14 and 3D-14) and relatively distant (1D-15) strata were shown, explained by the spatiotemporal variability of sedimentary fluxes and the weathering crust activity in the studied area of the Laptev Sea. Based on the geological structure, the obtained data on the lithochemical composition of thawed and permafrost deposits indicated that sedimentary rocks in the Kharaulakh Ridge of the Verkhoyansk mountain system, corresponding to sandstones, siltstones, and mudstones, were probably the basis of the petrofund. The contribution of igneous and metamorphic rocks to the supply of sedimentary matter in the strata uncovered by drilling was insignificant and of a subordinate nature.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"30 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design of the Position of the Blocking Material in a Water-Flooded High-Permeability Interlayer of an Oil Reservoir for a Five-Spot Flooding Scheme 五点注水方案下油藏注水高渗透夹层中封堵材料的位置设计
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-06-05 DOI: 10.3103/s0145875224700169
K. A. Potashev, V. V. Baushin, A. B. Mazo, R. G. Ramazanov, V. V. Shelepov
{"title":"Design of the Position of the Blocking Material in a Water-Flooded High-Permeability Interlayer of an Oil Reservoir for a Five-Spot Flooding Scheme","authors":"K. A. Potashev, V. V. Baushin, A. B. Mazo, R. G. Ramazanov, V. V. Shelepov","doi":"10.3103/s0145875224700169","DOIUrl":"https://doi.org/10.3103/s0145875224700169","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article presents a comparative analysis of the efficiency of various arrangements of a blocking material in a thin, high-permeability water-cut layer of an oil reservoir in order to reduce unproductive injection and increase oil recovery. The efficiency was was calculated by high-resolution numerical simulation in the vertical section of a typical stream tube for a five-spot water-flooding scheme. Three types of position of the blocking intervals are considered for two representative ratios of the viscosity of the water and oil phases.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"21 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sensitivity of Magnetotelluric Soundings to Typical Electrical Conductivity Anomalies in the Tectonosphere 磁电探测对构造层典型电导率异常的敏感性
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-06-05 DOI: 10.3103/s0145875224700157
D. D. Popov, P. Yu. Pushkarev
{"title":"Sensitivity of Magnetotelluric Soundings to Typical Electrical Conductivity Anomalies in the Tectonosphere","authors":"D. D. Popov, P. Yu. Pushkarev","doi":"10.3103/s0145875224700157","DOIUrl":"https://doi.org/10.3103/s0145875224700157","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A three-dimensional resistivity model is presented that contains electrical resistivity anomalies of a complex shape on three structural levels: in the sedimentary cover, in the consolidated crust, and in the upper mantle. The synthetic (model) magnetotelluric data obtained as a result of solving the direct problem are analyzed to identify anomalies associated with resistivity in inhomogeneities at different depths. Quantitative estimates of the sensitivity of various components of the magnetotelluric data to these inhomogeneities are given. Further, we plan to use the presented data to evaluate the efficiency of various methods for solving inverse problems.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"18 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Geochemical Features of Microbial Carbonates of the Abalak and Georgian Formations in Western Siberia 西西伯利亚西部阿巴拉克地层和格鲁吉亚地层微生物碳酸盐的地球化学特征
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-02-07 DOI: 10.3103/s0145875223050071
M. R. Latypova, A. G. Kalmykov, V. V. Churkina, E. V. Karpova, N. S. Balushkina, G. A. Kalmykov
{"title":"The Geochemical Features of Microbial Carbonates of the Abalak and Georgian Formations in Western Siberia","authors":"M. R. Latypova, A. G. Kalmykov, V. V. Churkina, E. V. Karpova, N. S. Balushkina, G. A. Kalmykov","doi":"10.3103/s0145875223050071","DOIUrl":"https://doi.org/10.3103/s0145875223050071","url":null,"abstract":"<p><b>Abstract</b>—The geochemical and lithological features of bacterial–algal structures from the top of the Abalak and Georgia Formations in the central part of Western Siberia were studied in order to determine the specific conditions of their formation. The authors compared the element composition of these microbial carbonates with the secondary carbonate rocks of the Abalak and Georgia formations. According to the results of X-ray fluorescence analysis, differences were identified in the contents of MnO, Cr, V, Ni, Cu, and Zn in two types of carbonates. The higher content of MnO in bacterial–algal structures were explained by the ability of bacteria to sorb Mn on the surface of their cells. This process requires oxygen, which suggests the presence of a natural aerobic environment for the development of bacteria during the period of sediment accumulation. According to the results of the study of microbial carbonates under a scanning electron microscope, it was revealed that Mn, for the most part, is concentrated in carbonate minerals, in particular in kutnohorite. The increased content of biophilic elements such as Ni, Cu, Zn, V in microbial carbonates, is probably associated with the transformation of humic organic matter, that was accumulated in shallow water environments and was actively recycled by microbial organisms. Minerals with the high Ba concentration were also found in isolated bacterial–algal structures. According to the authors, such single barium mineralization could be caused by the point effect of both near-surface and deep-seated barium-containing solutions and are not associated with an increased content of manganese in the studied deposits.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"58 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139765958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Heterogeneous Structure of the Lithosphere of the Antarctic Sector of the South Atlantic According to the Results of Density Modeling 密度建模结果显示的南大西洋南极区岩石圈异质结构
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-02-07 DOI: 10.3103/s0145875223050113
D. A. Ryzhova, M. V. Kosnyreva, E. P. Dubinin, A. A. Bulychev
{"title":"The Heterogeneous Structure of the Lithosphere of the Antarctic Sector of the South Atlantic According to the Results of Density Modeling","authors":"D. A. Ryzhova, M. V. Kosnyreva, E. P. Dubinin, A. A. Bulychev","doi":"10.3103/s0145875223050113","DOIUrl":"https://doi.org/10.3103/s0145875223050113","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The results of density modeling of the tectonosphere structure in the Antarctic sector of the South Atlantic Ocean are presented. The modeling was carried out along the profiles stretching from the Falkland Plateau to the Mozambique Ridge and crossing a series of submarine rises and ridges separated by deep-sea basins. Studies show that the crust of this region has a heterogeneous structure and the crust underlying the rises is of a different structure, indicating different origins of the respective rises.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"30 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140888331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A General Classification of Geological Processes for the Purposes of Engineering Geology 工程地质学地质过程的一般分类
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-02-07 DOI: 10.3103/s0145875223050150
V. T. Trofimov, V. A. Korolev
{"title":"A General Classification of Geological Processes for the Purposes of Engineering Geology","authors":"V. T. Trofimov, V. A. Korolev","doi":"10.3103/s0145875223050150","DOIUrl":"https://doi.org/10.3103/s0145875223050150","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>—</h3><p>The issues of developing a general classification of geological processes that are the subject of research in modern engineering geodynamics, one of the areas of engineering geology, are considered. A new general classification of geological processes for the purposes of engineering geology is proposed, taking into account the disadvantages of previous similar classifications and covering the whole variety of both natural geological processes and their technogenic analogues, that is, engineering-geological processes.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"313 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139766153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Solubility of CaF2 in Seawater of Normal and Increased Salinity (Associated with Genesis of Fluorite in Sedimentary Rocks) CaF2 在盐度正常和盐度升高的海水中的溶解度（与沉积岩中萤石的成因有关）
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-02-07 DOI: 10.3103/s0145875223060145
A. V. Savenko, V. S. Savenko
{"title":"The Solubility of CaF2 in Seawater of Normal and Increased Salinity (Associated with Genesis of Fluorite in Sedimentary Rocks)","authors":"A. V. Savenko, V. S. Savenko","doi":"10.3103/s0145875223060145","DOIUrl":"https://doi.org/10.3103/s0145875223060145","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The solubility of crystalline and precipitated calcium fluoride in seawater and brines of the first stages of its evaporative concentration (before the beginning of gypsum and halite setting) has been experimentally studied. It is established that in the entire studied range of salinity, seawater and its derivatives are strongly undersaturated in calcium fluoride, which excludes its spontaneous precipitation in drying isolated sea basins. A necessary condition for the formation of sedimentary fluorite is the entry of significant amounts of dissolved fluorine from external sources, which can be river runoff, volcanic emanations, and hydrothermal solutions, into drying sea basins.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"35 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139765849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Seismological Monitoring of Russia in 2022 2022 年俄罗斯地震监测
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-02-07 DOI: 10.3103/s0145875223060108
A. A. Malovichko, M. V. Kolomiyets, A. I. Ruzaykin
{"title":"Seismological Monitoring of Russia in 2022","authors":"A. A. Malovichko, M. V. Kolomiyets, A. I. Ruzaykin","doi":"10.3103/s0145875223060108","DOIUrl":"https://doi.org/10.3103/s0145875223060108","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This paper presents the results of seismic monitoring for the major seismoactive regions of Russia in 2022: Caucasus, East European Platform, Arctic, Altai and Sayan, Cis-Baikalian, and Transbaikalian regions; the Amur region and Primorye; Sakhalin Island, Kuril–Okhotsk region, Yakutia, Northeast Russia, and Chukotka, Kamchatka, and Commander Islands. For each region, the catalogs of the most significant and tangible earthquakes are given with the hypocentral parameters and magnitudes as obtained from the instrumental observations. The macroseismic effects from the majority of tangible earthquakes (with <i>I</i> ≥ 2.5 on the ShSI-2017 scale) that occurred in the territory of Russia have been analyzed. The materials presented in this work are of value for specialists in the fields of seismology and seismotectonics. The article also assists in early familiarization of interested readers with the available general information about the seismicity of Russia in 2022 before the release of full-scale special publications devoted to earthquakes in Russia.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"62 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139765943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Evolution of Bioclasts during Catagenesis in Rocks of the Bazhenov Formation in the Territory of the Frolov Oil and Gas Region 弗罗洛夫油气区巴热诺夫岩层成岩过程中生物碎屑的演变
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-02-07 DOI: 10.3103/s014587522306011x
D. A. Marunova, N. V. Pronina, A. G. Kalmykov, D. A. Ivanova, G. G. Savostin, A. P. Vaitechovich, G. A. Kalmykov
{"title":"The Evolution of Bioclasts during Catagenesis in Rocks of the Bazhenov Formation in the Territory of the Frolov Oil and Gas Region","authors":"D. A. Marunova, N. V. Pronina, A. G. Kalmykov, D. A. Ivanova, G. G. Savostin, A. P. Vaitechovich, G. A. Kalmykov","doi":"10.3103/s014587522306011x","DOIUrl":"https://doi.org/10.3103/s014587522306011x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The results of the studies of organic matter in the rocks of the Bazhenov Formation in the territory of the Frolov oil and gas region of the West Siberian basin are presented. The maceral composition of the sediments is represented by bituminite and alginite, redeposited vitrinite, as well as bioclasts: onychites and calcespheres organic matter. The investigation was focused on bioclasts. Their coal petrographic characteristics and change in the process of catagenesis are described; qualitative parameters to access the degree of bioclast maturity are established; as well, an initial formula for converting the onychite reflectance to the equivalent of vitrinite reflectance is proposed.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"110 11 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139765841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Сomparative Analysis of Oils from Carbonate Sediments of the Upper Usolskaya Subformation and the Vendian–Cambrian Pay Horizons in the Central Part of the Nepsko-Botuobinskaya Anteclise 上乌索尔斯卡亚亚层碳酸盐沉积物和尼泊尔-博图宾斯卡亚反地层中部文迪-寒武纪海平面的油类对比分析
IF 0.4
Moscow University Geology Bulletin Pub Date : 2024-02-07 DOI: 10.3103/s0145875223060066
I. V. Egorov, M. A. Bolshakova, O. V. Krylov
{"title":"A Сomparative Analysis of Oils from Carbonate Sediments of the Upper Usolskaya Subformation and the Vendian–Cambrian Pay Horizons in the Central Part of the Nepsko-Botuobinskaya Anteclise","authors":"I. V. Egorov, M. A. Bolshakova, O. V. Krylov","doi":"10.3103/s0145875223060066","DOIUrl":"https://doi.org/10.3103/s0145875223060066","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The study of the prospects in the central part of the Nepsko-Botuobinskaya Anteclise is focused on the subsalt oil and gas bearing horizons of Group B (Osinsky, Upper Ust-Kutsky, Lower Ust-Kutsky, and Preobrazhensky) and Group V (terrigenous formations of Vendian age). However, higher, in the Lower–Middle Cambrian carbonate-halogen deposits, there are also promising horizons of Group A (Kelorsky, Atovsky, Khristoforovsky, and Balykhtinsky) whose sufficient oil and gas content was confirmed in the neighboring Angara-Lena stage and in the north of the Nepsko-Botuobinskaya Anteclise and its adjacent structures. This paper examines the results of geochemistry tests of oil samples from the Osinsky horizon (layer B1) and the nameless dolomite layer located between the salts in the lower part of the Upper Usolskaya Subformation, which was previously considered gas-bearing at best. The tests conducted by the method of chromatography-mass spectrometry and the comparison of geochemical parameters of oils from different reservoirs show the similarity of hydrocarbon fluids of the Upper Usolskaya Subformation and of underlying pay horizons, which makes it possible to attribute them to a single oil and gas bearing system.</p>","PeriodicalId":44391,"journal":{"name":"Moscow University Geology Bulletin","volume":"17 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139765836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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