Moscow University Bulletin. Series 4. Geology最新文献

{"title":"Conditions for the formation of ground water in artesian basins of intermountain type","authors":"E. Baranovskaya, K. E. Pitjeva, L. E. Orolbaeva","doi":"10.33623/0579-9406-2021-4-109-119","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-4-109-119","url":null,"abstract":"The article focuses on the features of the formation of artesian basins of intermountain type. The conditions of formation of groundwater of Heihe artesian intermountain basin, located in the arid region of North-Western China, and water resources of the Tien Shan within Kyrgyzstan are considered. The differences in the hydrogeological structure of the basins, the features of recharge / discharge caused them to be divided into areas that are characterized by features in the chemical composition and quality of groundwater. This study describes the factors affecting the formation of groundwater, the geological and hydrogeological, and also hydrodynamic features of intermountain artesian basins. The main pattem of groundwater flows is characterized and the conceptual models of groundwater systems are presented. The chemical composition of their constituent aquifers is characterized. The obtained results provide a scientific basis for rational planning of social-economic management in the water-limited regions.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"11 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132837031","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}

{"title":"Impact of planned heterogeneity of hydraulic conductivity on the results of pumping in an isolated unconfined layer","authors":"N. Sizov, S. Pozdniakov, N. N. Muromets","doi":"10.33623/0579-9406-2021-3-113-123","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-3-113-123","url":null,"abstract":"The paper presents the results of numerical simulation of cluster pumping test in an heterogeneous aquifer with transmissivtyvariability described by the model of a stationary random field of its logarithm with a given scale of correlation in the plan. The case of comparable planar distance to observation wells and correlation scale is considered. Parameters of the model of transmissivity heterogeneity of the simulated aquifer are obtained from the data of experimental tests carried out within the limits of the South Voronezhskoye groundwater field. The simulation has shown that the average results of interpretation of these cluster pumping data correspond to the geometric value of the transmissivity, which confirms the previously obtained approximate theoretical result for the model of small-scale heterogeneity and extends it to an almost important case of similarity of cluster well test planar sizes and spatial scale of heterogeneity. Thus, the present study has confirmed the possibility to apply standard methods in processing of cluster pumping data under planned heterogeneity conditions to estimate the equivalent aquifer transmissivity in the well cluster location area.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124336556","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}

{"title":"Seismic geomorphological analysis of the oligocene-neogene sediments in the north-eastern part of the Black Sea","authors":"G. V. Baskakova, N. Kulyukina, T. A. Arzamastseva, N. A. Malyashev, O. Almendinger, A. Nikishin","doi":"10.33623/0579-9406-2021-4-38-51","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-4-38-51","url":null,"abstract":"The evolution of the deep-sea sedimentation system in the north-eastern part of the Black Sea during the Oligocene-Pliocene is considered mainly on the basis of seismic data. The fans and erosion canyons formation time is presumably related to the regressive-transgressive stages in the history of the Eastern Paratethys. The source areas of detrital sediments in the Tuapse Trough are identified. The sedimentation model of the Tuapse Trough and the changes in the Trough’s morphology since the Oligocene were reconstructed based on the analysis of the thickness maps and the onlap surfaces on the northern side of the Shatsky Swell. Paleogeographic maps were compiled for the Late Oligocene-Early Miocene (Maikop), Middle Miocene, and Pliocene.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124579444","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}

{"title":"Lithological and geochemical characteristics and paleoclimatic conditions of the origin of Upper Cretaceous deposits of the epicontinental basin of the Russian plate in the region of the Ulyanovsk-Saratov foredeep","authors":"R. Gabdullin, A. Puzik, S. Merenkova, I. R. Migranov, N. V. Badulina, A. Ivanov, M. D. Kazurov","doi":"10.33623/0579-9406-2021-2-20-33","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-2-20-33","url":null,"abstract":"The results of a geochemical study and paleogeographic, paleoclimatic interpretation for a cyclically constructed section of upper Cretaceous deposits near Volsk city, Saratov region, are presented. Elementary formation cyclites and cyclic variations of a number of certain parameters were associated with the Milankovich astronomical-climatic cycles. The curves of changes of paleotemperature, humidity, paleobathymetry were compiled. The results obtained give an idea of the migration of the arid belt boundaries in the upper Cretaceous and the overall climatic zonation, which is important for regional and global paleoclimatic reconstructions, as well as the history of the development of shelf seas that covered the Russian plate (especially Ulyanovsk-Saratov trough). Paleotemperatures of the land surface in the denudation areas are obtained from the chemical index of alteration (CIA). In the Turonian-Campanian interval selected climatic cyclicity, including period of relative cooling (Turonian–Coniacian) with paleotemperature about 20 °С, the period of relative warming in the mid-late Campanian (20–24 °С), the cooling time at the end of the late Campanian (19–21 °С) and the period of warming at the turn of the Campanian and Maastrichtian and in the early Maastrichtian time. In Maastrichtian age, there are two climatic cycles, beginning with a time of relative cooling (about 19 °С) and ending with a time of relative warming (about 20  С, at the end of Maastrichtian to 25 °С). The cycles of climate humidity change are also determined: two cycles in Campanian time, three cycles in early Maastrichtian, and one cycle in late Maastrichtian. The boundary of the early and late Maastrichtian corresponds to the change of arid conditions to humid ones. The paleobatimetry curves show transgressive-regressive cycles: one in the late Turonian-Coniacian time, two in the late Campanian time, five in the early Maastrichtian time, and one in the late Maastrichtian time. Depth variations were estimated: in the Turonian-Coniacian time in the range of 70–80 m, in the Campanian-Maastrichtian time, the paleobatimetry consistently increased and changed from 100 to 200 m (on average about 150 m). The results obtaired give and idea of the migration of the boundaries of the arid belt in the Late Creataceous and main features of the climatic zonation, which is important for regional and global paleoclimatic reconstructions, as well as for the history of the development the Russian plate in the Ulyanovsk-Saratov region.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121829776","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}

{"title":"Sequence stratigraphy of the Upper Vendian of the North-East of the Nepk-Botubinskaya anteclise of the Siberian platform (based on studyng boreholes core and Aliza gis)","authors":"A. Plyusnin, L. Kopaevich","doi":"10.33623/0579-9406-2021-2-11-19","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-2-11-19","url":null,"abstract":"The results of the analysis of core and logs of the upper vendian sediments (vilyuchansky, nepsky, tirsky and danilovsky horizons) of the northeast of the Nepa-Botuoba anteclise are presented. Regional sequence-stratigraphic analysis made it possible to identify six third-order sequences and stratigraphic unconformities confined to their boundaries. The systemic tracts are represented by proluvial, alluvial, lagoon and shallow-water-marine sediments, successively replacing each other, which is typical for the passive continental margin and the general subsidence of the Siberian platform in the vendian time.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132298415","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}

{"title":"The interconnection of platform’s dislocations and sediment cover with the latest structure plan of the west Siberian plate","authors":"E. A. Manuilova","doi":"10.33623/0579-9406-2021-4-23-31","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-4-23-31","url":null,"abstract":"Comparison of the latest structural plan of the West Siberian plate with the dislocations of the basement and sedimentary cover allowed us to rank the latest plicative and disjunctive structures according to the degree of inheritance. As a result of the work carried out, inherited, reversed and newly formed plicative structural forms were established. It is noted that the prostrations of ancient structures differ from modern ones and inheritance occurs only in fragments. When comparing the newest faults with the oldest ones, inherited and newly formed discontinuous faults are noted. The newly discovered inherited structures can be considered as promising areas for the search for hydrocarbon deposits.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130934197","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}

{"title":"Assessment of the influence of neotectonic movements on the relief of the basins of lakes Ladoga and Onega","authors":"A. O. Agibalov, V. Zaitsev, A. Sentsov, E. A. Manuilova, A. Poleshchuk","doi":"10.33623/0579-9406-2021-4-32-37","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-4-32-37","url":null,"abstract":"We obtained new data about the high degree of relationship between the relief and the nature of the latest movements within the depressions of the Ladoga and Onega lakes as a result of geomorphological studies. Computer geodynamic modeling showed that this relationship is explainable by the development of the supposed active faults identified by us on a detailed scale in an environment of northeastern extension, the axis of which is oriented across the strike of the considered lake basins.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132529730","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}

{"title":"Vysotskite holotype as metamorphogenic-hydrothermal vysotskite (Pd,Ni)S from the Norilsk-I deposit","authors":"E. Spiridonov","doi":"10.33623/0579-9406-2021-2-79-86","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-2-79-86","url":null,"abstract":"Vysotskite is developed in Co-Ni-Cu sulphide massive and disseminated (“amygdaloid”) ores of the Norilsk-I deposit, entrained by post-trap low-grade metamorphism in the conditions of prehnite-pumpellyite and zeolite (lomontite) facies. Vysotskite associates with ferrian chlorite, cummingtonite, grünerite, prehnite, corrensite, ilvaite, babingtonite, pumpellyite, grinalite, millerite NiS, polydymite Ni3S4, galenite and chalcopyrite. This facies of metamorphosed sulphide ores were formed in the conditions of low oxidative potential and relatively high sulphide sulfur fugacity. This vysotskite is extremely poor in platinum, enriched in nickel and partly in iron. The average composition of studied vysotskite is (wt%, n=17): Pd 65,65; Pt 0,12; Rh, Au traces; Ni 8,25; Fe 0,95; Cu 0,32; Co 0,03; S 25,03; As 0,03; sum 100,38; the formula of the mineral is (Pd0,79Ni0,18Fe0,02Cu0,01)1S1. According to mineral associations and chemical composition, the described vysotskite corresponds to vysotskite discovered by A.D. Genkin and O.E. Zvyagintsev [1962]. Therefore, vysotskite holotype is metamorphogenic-hydrothermal vysotskite of the Norilsk-I deposit with (Pd,Ni)S composition.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121105635","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}

{"title":"Distribution of trace elements in mud volcano sediments: in search of juvenile component","authors":"A. Maslov, V. Shevchenko, A. Bychkov","doi":"10.33623/0579-9406-2021-3-89-98","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-3-89-98","url":null,"abstract":"Researchers’ views on the causes of mud volcanism have evolved over time. In the early stages, mud volcanoes were considered common to volcanoes. Later, they began to be associated with processes in sedimentary basins, although attempts to link mud volcanism with magmatic manifestations and replenishment of juvenile components still exist. Findings of mercury, native gold, silver, sulfur, copper, iron and accessory minerals in the products of mud volcanoes in recent years allow a number of researchers to assume the existence of deep-seated flows of hydrocarbons from the mantle, and to consider mud volcanoes as a kind of degassing pipes. The results of the analysis of trace element composition of mud volcanoes sediments in different regions of the world (Kerch Peninsula, North-West Caucasus, Sakhalin, Dzhungar Basin, Andaman Islands, Cadiz Bay, Eastern Mediterranean and Eastern Java) confirm the idea that in them, as in the mud volcanoes fluids (water, methane, carbon dioxide, and helium), traces of the mantle/juvenile component are not observed.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127455642","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}

{"title":"Cristobalite and tridymite from deposits of the Arsenatnaya fumarole (Tolbachik volcano, Kamchatka, Russia)","authors":"F. Sandalov, N. V. Schipalkina, I. Pekov, N. N. Koshlyakova, S. Britvin, E. G. Sidorov","doi":"10.33623/0579-9406-2021-2-87-96","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-2-87-96","url":null,"abstract":"This article displays data on cristobalite and tridymite from the Arsenatnaya active fumarole, the Tolbachik volcano, Kamchatka, Russia. The minerals occur in associations with fumarolic sylvite, sanidine, cassiterite, hematite, pseudobrookite, johillerite, tilasite, badalovite. Fumarolic cristobalite is tetragonal (-modification); the unit-cell parameters for one of samples are: а = 4,975 (7) Å, с = 6,944 (13) Å, V = 171,89 Å3. There are two types of tridymite — monoclinic (MC) and orthorhombic (PO-10) — in the Arsenatnaya fumarole. The unit-cell parameters of these tridymite modifications are: a = 18,553 (5), b = 5,006 (1), с = 25,952 (10) Å,   = 117,68 (2)o, V = 2134,3 (11) Å3 (MC); a = 9,941 (2), b = 17,165 (4), с = 82,362 (18) Å, V = 14053,4 (29) Å3 (PO-10). Mineral assemblages of cristobalite and tridymite indicate high-temperature formation conditions of these minerals — not lower 450–500 °С — with a high participation degree of HCl and HF in process of basalt alteration by fumarolic gas. The surrounding basalt was a source of silicon. This element was, probably, transported in the form of SiX4, where X = F, Cl.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127724751","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}