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Moscow University Bulletin. Series 4. Geology最新文献

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On the problem of the origin of dislocations in the holocene sand deposits of the Onega structure of the Baltic shield 波罗的海盾构奥涅加构造全新世砂沉积位错成因问题
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-06-07 DOI: 10.55959/msu0579-9406-4-2023-63-2-14-25
A. Poleshchuk, D. Zykov, S. Y. Kolodyazhny, A. O. Agibalov, A. Sentsov
{"title":"On the problem of the origin of dislocations in the holocene sand deposits of the Onega structure of the Baltic shield","authors":"A. Poleshchuk, D. Zykov, S. Y. Kolodyazhny, A. O. Agibalov, A. Sentsov","doi":"10.55959/msu0579-9406-4-2023-63-2-14-25","DOIUrl":"https://doi.org/10.55959/msu0579-9406-4-2023-63-2-14-25","url":null,"abstract":"Associations of dislocations of sand deposits (probably — Holocene) have been identified on the southeastern margin of the Baltic Shield in the Petrozavodsk depression. Brittle disjunctives have a normal faults kinematics. The description of the identified dislocations and the patterns of spatial orientation characteristic of them, coinciding with the orientation of the Paleoproterozoic faults, the Shuya River valley and the eskers, are given. Possible hypotheses are considered and a model of their formation is proposed. The revealed consistency of the orientation of the studied dislocations with ancient disturbances indicates the tectonic nature and inherited nature of the processes occurring within the southeastern margin of the Baltic Shield of the East European Platform (EEP).","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127926312","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
Investigation of the limitations and applicability of the method of homogeneous functions for solving the inverse kinematic problem of seismic exploration 齐次函数法求解地震勘探逆运动学问题的局限性与适用性研究
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-04-20 DOI: 10.55959/msu0579-9406-4-2023-63-1-85-96
J. A. Gomanyuk, P. Y. Stepanov, A. Ermakov
{"title":"Investigation of the limitations and applicability of the method of homogeneous functions for solving the inverse kinematic problem of seismic exploration","authors":"J. A. Gomanyuk, P. Y. Stepanov, A. Ermakov","doi":"10.55959/msu0579-9406-4-2023-63-1-85-96","DOIUrl":"https://doi.org/10.55959/msu0579-9406-4-2023-63-1-85-96","url":null,"abstract":"The results of the application of the variational ray tracing algorithm to study the possibilities and limitations of one of the methods for solving the inverse kinematic problem of seismic exploration — the method of homogeneous functions developed at the Department of Seismometry and Geoacoustics of Moscow State University are presented. As a result of the calculations carried out on synthetic models and field material, conclusions were drawn about the exploration possibilities and areas of application of the method of homogeneous functions. Model examples show that the method of homogeneous functions gives correct results only for simple media: vertically inhomogeneous or layered with slightly inclined boundaries, and folds or inclusions can be restored only at a qualitative level. When working with real field data, the method of homogeneous functions correctly restores the velocity structure of the section to a depth of 1/3-1/2 of the maximum depth of ray penetration. At the same time, it makes sense to interpret only large anomalies with contrasting velocity values on the obtained velocity sections.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114339998","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
Geodynamics of the Katunsky fault (Gorny Altai) according to structural and kinematic data 根据构造和运动资料的卡通斯基断层(阿尔泰戈尔尼)地球动力学
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-04-20 DOI: 10.55959/msu0579-9406-4-2023-63-1-46-59
T. Tveritinova, A. Marinin, E. Deev
{"title":"Geodynamics of the Katunsky fault (Gorny Altai) according to structural and kinematic data","authors":"T. Tveritinova, A. Marinin, E. Deev","doi":"10.55959/msu0579-9406-4-2023-63-1-46-59","DOIUrl":"https://doi.org/10.55959/msu0579-9406-4-2023-63-1-46-59","url":null,"abstract":"In the Katun Fault Zone, the structural-paragenetic analysis of stress indicators and the method of cataclastic analysis of discontinuous faults have been used to determine the features of the structure of this fault and the conditions of its formation at the Late Alpine stage. It is proved that the Katun Fault Zone is the strike-slip fault that develops at different sites in transpressive or transtensive conditions. The newest grabens along the zone were formed under strike-slip fault displacements and locally manifested conditions of horizontal extension or horizontal extension with shear.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129483877","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
Fractal analysis of the sulfide composition and structure of interspersed ores in picrite gabbro-dolerites of the Oktyabrsky deposit, Norilsk ore field 诺里尔斯克Oktyabrsky矿床辉长辉长岩中间布矿石硫化物组成及结构的分形分析
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-04-20 DOI: 10.55959/msu0579-9406-4-2023-63-1-60-74
I. I. Nikulin, A. Kalashnikov, I. O. Krylov, J. Mikhailova, N. Groshev, R. Kadyrov
{"title":"Fractal analysis of the sulfide composition and structure of interspersed ores in picrite gabbro-dolerites of the Oktyabrsky deposit, Norilsk ore field","authors":"I. I. Nikulin, A. Kalashnikov, I. O. Krylov, J. Mikhailova, N. Groshev, R. Kadyrov","doi":"10.55959/msu0579-9406-4-2023-63-1-60-74","DOIUrl":"https://doi.org/10.55959/msu0579-9406-4-2023-63-1-60-74","url":null,"abstract":"The analysis of ore samples taken from wells drilled on the Eastern flank of the Oktyabrskoye deposit was carried out. In the vein-disseminated sulfide copper-nickel ores of the deposit, three types of mineralization are distinguished, which clearly differ from each other: interstitial-teardrop-like, interstitial, tear-shaped-interstitial. A sample of each type of ore was examined by 3D tomography and analyzed using fractal theory. Based on the results of the study, a conclusion was made about the relationship between the fractal dimensions of ore minerals and the dynamics of the formation of various types of ores. The pattern of changes in the intensity of mineralization from the thickness of the layers is established. The results obtained may be of great importance in relation to the technology of enrichment of new types of ores from the flanks of the deposit, and also be an additional criterion for identifying in disseminated ores zones with the highest intensity of ore mineralization during prospecting and exploration in the Norilsk ore region.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134068428","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 Results of the State Examination Committees’ work at the Faculty of Geology of Lomonosov Moscow State University in 2022 罗蒙诺索夫莫斯科国立大学地质系国家考试委员会2022年工作结果
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-04-20 DOI: 10.55959/msu0579-9406-4-2023-63-1-109-112
N. Eremin, M. E. Uspenskaya
{"title":"The Results of the State Examination Committees’ work at the Faculty of Geology of Lomonosov Moscow State University in 2022","authors":"N. Eremin, M. E. Uspenskaya","doi":"10.55959/msu0579-9406-4-2023-63-1-109-112","DOIUrl":"https://doi.org/10.55959/msu0579-9406-4-2023-63-1-109-112","url":null,"abstract":"The paper summarizes the results of the state exams as well as of the defenses of bachelors’ and mas- ters’ theses in the field of “Geology”. In 2022, the state examination committees worked in person. They considered 155 master’s and 178 bachelor’s theses. In 2022, the Faculty of Geology prepared master specialists in “Digitalization in the field of fossil fuel geology” for the first time; 156 master’s students passed the state exam in the field of “Geology”; 177 bachelor’s students passed state exams in the respective fields; 89 master’s students and 47 bachelor’s students graduated with honors. State examination committees worked systematically, in a well-organized and active manner.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115244380","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
About the time of a last connection between the Caspian and Black Seas during the Late Pleistocene 大约是在晚更新世里海和黑海之间最后一次连接的时候
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-04-20 DOI: 10.55959/msu0579-9406-4-2023-63-1-75-84
V. Sorokin, T. Yanina, V. L. Luksha
{"title":"About the time of a last connection between the Caspian and Black Seas during the Late Pleistocene","authors":"V. Sorokin, T. Yanina, V. L. Luksha","doi":"10.55959/msu0579-9406-4-2023-63-1-75-84","DOIUrl":"https://doi.org/10.55959/msu0579-9406-4-2023-63-1-75-84","url":null,"abstract":"A comparative analysis of sections of soil columns from the northern part of the Black Sea and the Northern and Middle Caspian Sea was performed. In the Black Sea, the New, Old Black Sea and New Evksin sediments were identified, the features of their lithological composition were revealed and the age of 14C was established. Shallow and deep-water Novocaspian, Mangyshlak, Verkhnekhvalynsky, Nizhnekhvalynsky, Athelsky and Hyrkan horizons are identified and correlated in the Caspian Sea. As a result, the identity of the structure of the continuous deep-water sections of the compared reservoirs and the synchronicity of the Novoevksin and Late Khvalyn layers are established, which suggests the absence of a connection between the Novoevksin and Early Khvalyn seas.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116755770","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 first record of Pachydiscus launayi De Grossouvre in the Lower Campanian deposits (Upper Cretaceous) of Southwestern Crimea 克里米亚西南部上白垩统下坎帕尼亚沉积中首次记录的Pachydiscus launayi De Grossouvre
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-04-19 DOI: 10.55959/msu0579-9406-4-2023-63-1-31-34
E. Y. Baraboshkin
{"title":"The first record of Pachydiscus launayi De Grossouvre in the Lower Campanian deposits (Upper Cretaceous) of Southwestern Crimea","authors":"E. Y. Baraboshkin","doi":"10.55959/msu0579-9406-4-2023-63-1-31-34","DOIUrl":"https://doi.org/10.55959/msu0579-9406-4-2023-63-1-31-34","url":null,"abstract":"Lower Campanian Pachydiscus (Pachydiscus) launayi (De Grossouvre) was found for the first time above the layer of soap (bentonite) clays widely known in the literature in an old quarry in the outskirts of the Kudrino village in the southwestern Crimea. This find expands the understanding of the distribution of this species and clarifies the biostratigraphic position of the soap clay layer.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123580683","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
Import of building stone to the northern Black Sea region in the Middle of the 1st mil. BC according to micropaleontological analysis 根据微古生物学分析，公元前1世纪中期进口建筑石材到黑海北部地区
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-04-19 DOI: 10.55959/msu0579-9406-4-2023-63-1-3-19
A. Khotylev, L. Kopaevich, M. R. Latypova, P. Proshina, A. Mayorov, S. Olkhovskiy, F. S. Shchepelev
{"title":"Import of building stone to the northern Black Sea region in the Middle of the 1st mil. BC according to micropaleontological analysis","authors":"A. Khotylev, L. Kopaevich, M. R. Latypova, P. Proshina, A. Mayorov, S. Olkhovskiy, F. S. Shchepelev","doi":"10.55959/msu0579-9406-4-2023-63-1-3-19","DOIUrl":"https://doi.org/10.55959/msu0579-9406-4-2023-63-1-3-19","url":null,"abstract":"The paper presents the results of micropaleontological studies of a series of stones found during the study of the pier of the ancient Greek city of Phanagoria. The samples contain Upper Turonian–Coniacian, Campanian, and Maastrichtian foraminifers characteristic of the Central Tethys zones. This makes it possible to exclude the Crimea and the North Caucasus from the possible regions of origin of the samples. It has been established that Upper Cretaceous carbonate strata similar in genesis and chronology are located on the site of the southern coast of the Black Sea near the ancient cities of Heraclea and Sinop.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126128891","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
Creation of a training ground for the complex geological and geophysical study of fracturing within the south-western Crimea (Cape Fiolent, Heraclea Plateau) 在克里米亚西南部(Heraclea高原的Cape Fiolent)建立一个复杂的地质和地球物理压裂研究训练基地
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-02-08 DOI: 10.33623/0579-9406-2022-6-152-166
O. V. Krylov, N. V. Lubnina, M. Vladov, I. Modin, G. Bryantseva, N. Kosevich, A. Palenov, A. Skobelev, A. I. Gushchin, V. O. Osadchiy, V. Evstigneev, A. A. Fadeev
{"title":"Creation of a training ground for the complex geological and geophysical study of fracturing within the south-western Crimea (Cape Fiolent, Heraclea Plateau)","authors":"O. V. Krylov, N. V. Lubnina, M. Vladov, I. Modin, G. Bryantseva, N. Kosevich, A. Palenov, A. Skobelev, A. I. Gushchin, V. O. Osadchiy, V. Evstigneev, A. A. Fadeev","doi":"10.33623/0579-9406-2022-6-152-166","DOIUrl":"https://doi.org/10.33623/0579-9406-2022-6-152-166","url":null,"abstract":"A complex of geological and geophysical work was carried out to study fracturing in the Jurassic-Neogene rocks of the Heraclea Plateau, which included a field study of the Georgievsky fault zone, structural and geomorphological analysis; the geophysical complex combined marine seismic and magnetometric studies in combination with ground-based studies using electrotomography, gravimetry and magnetometry. The main object of study was the zone of the deep Georgievsky fault and the feathering tectonic disturbances. As a result of complex studies, the main geological and geophysical criteria for the identification of dangerous fracturing sites have been established: the extremely heterogeneous structure of the upper part of the geoelectric section to depths of 30–40 m according to electrical survey data; seismic data indicate that Miocene limestones have extremely low strength properties in areas of increased fracturing; according to electrical survey data, the water content (humidity) of the upper part of the section changes sharply horizontally; in the karst areas at certain depths, there is a sharp variability in resistivity from the maximum values to the minimum; fracturing develops quite actively under the influence of landslide processes. Especially dangerous are the stretching cracks that occur in areas of positive relief of the base rocks, along which landslide bodies represented by limestones slide.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124835802","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
Studies of the kinetics of the reaction of dissolution of gypsum-anhydrite rocks in water of the initial stages 石膏硬石膏岩石初始阶段在水中溶解反应动力学研究
Moscow University Bulletin. Series 4. Geology Pub Date : 2023-02-08 DOI: 10.33623/0579-9406-2022-6-179-181
A. L. Alexey L. Lebedev, I. V. Irina V. Avilina
{"title":"Studies of the kinetics of the reaction of dissolution of gypsum-anhydrite rocks in water of the initial stages","authors":"A. L. Alexey L. Lebedev, I. V. Irina V. Avilina","doi":"10.33623/0579-9406-2022-6-179-181","DOIUrl":"https://doi.org/10.33623/0579-9406-2022-6-179-181","url":null,"abstract":"Experimental studies of the kinetics of dissolution of gypsum-anhydrite rocks in water (25 °C; P = 0,1 MPa) made it possible to formulate a process model in the form of a system of equations for the kinetics of dissolution of gypsum and anhydrite (of the first and second order, respectively). The calculated values turned out to be more comparable with the experimental data, taking into account the common-ion effect on the solubility of gypsum and anhydrite, and changes in their values of the specific reaction surface.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121034256","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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