Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-5-39-53
E. Kazak, A. Korzun, G. G. Akhmanov, E. Bakai
The paper presents the pore waters composition’s experimental results in the northeastern part of the Barents Sea. The pore water contains Cl–, Na+, SO4 2– and Mg2+ as dominant components and is quite similar to the Barents Seawater composition. For the first time, we measured the cation exchange capacity of (13.98-35.50 meq/100 g) and the exchanging cations composition (Na+>Mg2+>Ca2+>K+) of bottom sediments. We find that most of the sampled pore water (near 90%) have marine nature, and only near 10% is slightly transformed with sulfate reduction processes due to the diagenesis. We measure that the rare earth elements (REE) content in pore water is up to 1.589 μg/L with their content in sediments up to 144.051 mg/kg, negative cerium and positive europium anomalies are observed both in the pore waters and in bottom sediments. We calculated using PHREEQC that pore water undersaturated to gypsum and halite and supersaturated to calcite and dolomite, which may precipitate in deposits during diagenesis.
{"title":"Pore waters geochemistry of bottom sediments in the northeastern part of the Barents sea","authors":"E. Kazak, A. Korzun, G. G. Akhmanov, E. Bakai","doi":"10.33623/0579-9406-2021-5-39-53","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-5-39-53","url":null,"abstract":"The paper presents the pore waters composition’s experimental results in the northeastern part of the Barents Sea. The pore water contains Cl–, Na+, SO4 2– and Mg2+ as dominant components and is quite similar to the Barents Seawater composition. For the first time, we measured the cation exchange capacity of (13.98-35.50 meq/100 g) and the exchanging cations composition (Na+>Mg2+>Ca2+>K+) of bottom sediments. We find that most of the sampled pore water (near 90%) have marine nature, and only near 10% is slightly transformed with sulfate reduction processes due to the diagenesis. We measure that the rare earth elements (REE) content in pore water is up to 1.589 μg/L with their content in sediments up to 144.051 mg/kg, negative cerium and positive europium anomalies are observed both in the pore waters and in bottom sediments. We calculated using PHREEQC that pore water undersaturated to gypsum and halite and supersaturated to calcite and dolomite, which may precipitate in deposits during diagenesis.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131898529","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}
Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-6-86-97
D. A. Marunova, N. Pronina, A. Kalmykov, D. Ivanova, G. Kalmykov
The paper presents the results of coal petrographic and geochemical studies of the Tutleim Formation rocks organic matter in the area of the Em-Egovskaya summit. Five macerals were identified that compose the organic matter of the studied formation: “standard” bituminite, “atypical” bituminite, radiolarian organic matter, alginite and vitrinite, as well as bitumen and bitumen films, which are the products of the original organic matter transformation. The metamorphosis in macerals during catagenesis is described, and the order of their entry into the generation phase is established. It has been shown that alginite starts transforming first, then “standard” bituminite, “atypical” bituminite, and the last one is the radiolarian organic matter. The results obtained were confirmed by the laboratory modeling of the further organic matter transformation. New bitumens are formed with different fluorescent properties compared to the initial ones. The results obtained in combination with the study of changes in the composition of both macerals and bitumen can make it possible to assess the contribution of individual organic matter microcomponents to the process of petroleum hydrocarbons generation.
{"title":"Organic matter maturation stages in Tutleim formation rocks depending on maceral composition","authors":"D. A. Marunova, N. Pronina, A. Kalmykov, D. Ivanova, G. Kalmykov","doi":"10.33623/0579-9406-2021-6-86-97","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-6-86-97","url":null,"abstract":"The paper presents the results of coal petrographic and geochemical studies of the Tutleim Formation rocks organic matter in the area of the Em-Egovskaya summit. Five macerals were identified that compose the organic matter of the studied formation: “standard” bituminite, “atypical” bituminite, radiolarian organic matter, alginite and vitrinite, as well as bitumen and bitumen films, which are the products of the original organic matter transformation. The metamorphosis in macerals during catagenesis is described, and the order of their entry into the generation phase is established. It has been shown that alginite starts transforming first, then “standard” bituminite, “atypical” bituminite, and the last one is the radiolarian organic matter. The results obtained were confirmed by the laboratory modeling of the further organic matter transformation. New bitumens are formed with different fluorescent properties compared to the initial ones. The results obtained in combination with the study of changes in the composition of both macerals and bitumen can make it possible to assess the contribution of individual organic matter microcomponents to the process of petroleum hydrocarbons generation.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129129142","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}
Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-6-70-76
M. Boguslavskiy, V. D. Sagalevich, V. Prokofiev
The Golets Vysochaishy deposit has a sub-tabular orebody hosted by black carbonaceous fine-grained aleuropelitic rocks. We have studied fluid inclusions in quartz samples taken from sulfide-quartz veins in the ore zone of the deposit — performed studies made it possible to establish the parameters of the ore-forming fluid. Thus, the fluids of the deposit are characterized by the typical features of orogenic vein gold deposits’ ore-forming fluids. The process of carbon dioxide degassing from the fluid may have contributed to the deposition of native gold.
{"title":"New data on the formation conditions of the Golets Vysochaishiy gold deposit (Bodaibinskiy district, Russia)","authors":"M. Boguslavskiy, V. D. Sagalevich, V. Prokofiev","doi":"10.33623/0579-9406-2021-6-70-76","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-6-70-76","url":null,"abstract":"The Golets Vysochaishy deposit has a sub-tabular orebody hosted by black carbonaceous fine-grained aleuropelitic rocks. We have studied fluid inclusions in quartz samples taken from sulfide-quartz veins in the ore zone of the deposit — performed studies made it possible to establish the parameters of the ore-forming fluid. Thus, the fluids of the deposit are characterized by the typical features of orogenic vein gold deposits’ ore-forming fluids. The process of carbon dioxide degassing from the fluid may have contributed to the deposition of native gold.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124800426","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}
Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-5-13-18
N. Bozhko
In the light of modern data, the validity of the existence of two supercontinents in the Proterozoic, previously identified by the author, is considered. The analysis of these data, in particular the results of published paleomagnetic studies, suggests in favor of such identification. At the same time, the existing “generally accepted” sequence of supercontinents in the history of the Earth is not violated, but supplemented.
{"title":"On the question of the number of Proterozoic supercontinents","authors":"N. Bozhko","doi":"10.33623/0579-9406-2021-5-13-18","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-5-13-18","url":null,"abstract":"In the light of modern data, the validity of the existence of two supercontinents in the Proterozoic, previously identified by the author, is considered. The analysis of these data, in particular the results of published paleomagnetic studies, suggests in favor of such identification. At the same time, the existing “generally accepted” sequence of supercontinents in the history of the Earth is not violated, but supplemented.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"320 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130070581","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}
Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-6-10-19
E. A. Manuilova
The division of deposits by types of hydrocarbons on the territory of the West Siberian Plate allowed us to identify three areas: Yamalo-Gydan, where gas and gas condensate fields are concentrated, Nadym-Taz with a mixed type of deposits and the Latitudinal Ob region, where oil fields predominate. These areas are confined to certain neotectonics areas. Comparison of the location of hydrocarbon deposits with the latest structures allowed us to establish signs of their localization both within each of the regions and in general for the territory of the West Siberian Plate. It is recorded that oil and gas fields are confined mainly to the areas of the newest regional inherited depressions, faults with a shear component of the northwestern and northeastern strike, areas with high (66–100%) and low (0–33%) lineament density, depressions-valleys separating the newest regional and local structures and the boundaries of local uplifts and depressions.
{"title":"Localization of oil and gas deposits depending on the types of new structures on the territory of the West Siberian plate","authors":"E. A. Manuilova","doi":"10.33623/0579-9406-2021-6-10-19","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-6-10-19","url":null,"abstract":"The division of deposits by types of hydrocarbons on the territory of the West Siberian Plate allowed us to identify three areas: Yamalo-Gydan, where gas and gas condensate fields are concentrated, Nadym-Taz with a mixed type of deposits and the Latitudinal Ob region, where oil fields predominate. These areas are confined to certain neotectonics areas. Comparison of the location of hydrocarbon deposits with the latest structures allowed us to establish signs of their localization both within each of the regions and in general for the territory of the West Siberian Plate. It is recorded that oil and gas fields are confined mainly to the areas of the newest regional inherited depressions, faults with a shear component of the northwestern and northeastern strike, areas with high (66–100%) and low (0–33%) lineament density, depressions-valleys separating the newest regional and local structures and the boundaries of local uplifts and depressions.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117028725","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}
Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-6-61-69
A. Glukhov, V. V. Priymenko, A. Samsonov
Some aspects of the genesis of industrially important Paleozoic epithermal gold deposits of the Omolon massif are considered. According to the results of Ar-Ar dating of ores, their age is 20–30 Ma younger than that of the volcanic complexes of the Kedonian volcanic belt of the Devonian, with which this mineralization is traditionally associated. For the Paleozoic continental marginal magmatism of the Omolon massif, we have identified a stage of post-subduction rifting, characterized by the formation of volcano-plutonic associations of shoshonite-latite series. The authors suppose that it was at this stage, the chronological boundaries of which are determined as 335–286 Ma, that the ores under consideration were formed. The paragenetic connection with riftogenic shoshonite-latite series explains such specific features of the Paleozoic epithermal gold mineralization of the Omolon massif, such as high gold-silver ratio, low ore sulfide content, widespread development of fluorite and tellurides, low values of the primary Sr isotope ratio (0,703–0,706).
{"title":"The age and tectonic position epithermal gold mineralization Omolon Massif (North-East Asia)","authors":"A. Glukhov, V. V. Priymenko, A. Samsonov","doi":"10.33623/0579-9406-2021-6-61-69","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-6-61-69","url":null,"abstract":"Some aspects of the genesis of industrially important Paleozoic epithermal gold deposits of the Omolon massif are considered. According to the results of Ar-Ar dating of ores, their age is 20–30 Ma younger than that of the volcanic complexes of the Kedonian volcanic belt of the Devonian, with which this mineralization is traditionally associated. For the Paleozoic continental marginal magmatism of the Omolon massif, we have identified a stage of post-subduction rifting, characterized by the formation of volcano-plutonic associations of shoshonite-latite series. The authors suppose that it was at this stage, the chronological boundaries of which are determined as 335–286 Ma, that the ores under consideration were formed. The paragenetic connection with riftogenic shoshonite-latite series explains such specific features of the Paleozoic epithermal gold mineralization of the Omolon massif, such as high gold-silver ratio, low ore sulfide content, widespread development of fluorite and tellurides, low values of the primary Sr isotope ratio (0,703–0,706).","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130936631","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}
Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-6-49-60
M. R. Latypova, O. V. Khotylev, N. Balushkina, A. Kalmykov, G. Kalmykov, L. Kopaevich, E. V. Karpova, V. Churkina
As part of this work, various sedimentation environments were identified in the Middle-Late Jurassic (J2k–J3v1) on the territory of the Krasnoleninsky arch in Western Siberia. The heterogeneity of the seabed topography and the presence of islands formed by protrusions of the pre-Jurassic basement led to the formation of the Vogulka strata as a result of the removal of clastic material from the land. At the same time, far from the islands, in relatively calm shallow environments, clayey and glauconite-clayey sediments of the Abalak Formation accumulated. Gravelites and sandstones of the Vogulka strata were formed unevenly. The greatest thickness of these deposits is observed to the west of the central upland. The difference in the thickness of clastic strata on the western and eastern slopes could probably be caused by the specific horseshoe shape of the island and the absence of active currents on the western part of the slope, as well as its greater steepness. The upper member of the Vogulka strata, composed of detrital limestones, is extremely thin (no more than 1 m), and contains numerous unconformities. Probably, these traces of erosion can be indirect evidence of the influence of the Late Oxford regression on the structure of the section, which was previously noted in adjacent territories.
{"title":"Sedimentary conditions of the Abalak formation and Vogulkinskaya strata on the area of Kamennaya summit (Krasnoleninsky arch, Western Siberia)","authors":"M. R. Latypova, O. V. Khotylev, N. Balushkina, A. Kalmykov, G. Kalmykov, L. Kopaevich, E. V. Karpova, V. Churkina","doi":"10.33623/0579-9406-2021-6-49-60","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-6-49-60","url":null,"abstract":"As part of this work, various sedimentation environments were identified in the Middle-Late Jurassic (J2k–J3v1) on the territory of the Krasnoleninsky arch in Western Siberia. The heterogeneity of the seabed topography and the presence of islands formed by protrusions of the pre-Jurassic basement led to the formation of the Vogulka strata as a result of the removal of clastic material from the land. At the same time, far from the islands, in relatively calm shallow environments, clayey and glauconite-clayey sediments of the Abalak Formation accumulated. Gravelites and sandstones of the Vogulka strata were formed unevenly. The greatest thickness of these deposits is observed to the west of the central upland. The difference in the thickness of clastic strata on the western and eastern slopes could probably be caused by the specific horseshoe shape of the island and the absence of active currents on the western part of the slope, as well as its greater steepness. The upper member of the Vogulka strata, composed of detrital limestones, is extremely thin (no more than 1 m), and contains numerous unconformities. Probably, these traces of erosion can be indirect evidence of the influence of the Late Oxford regression on the structure of the section, which was previously noted in adjacent territories.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121905585","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}
Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-6-142-149
A. Goev, I. Sanina, N. Konstantinovskaya, O. V. Ovchinnikova
The registration possibilities of the new broadband seismic station “Aleksandrovka” are considered. It has been established that its hardware and installation conditions make it possible to monitor the central part of the East European craton in order to identify events of small magnitude and to clarify the coordinates of located events. It is shown that the criterion for recognizing the genesis of events, developed earlier for the MSG “Mikhnevo”, can be applied to the records of a single seismic station.
{"title":"Possibilities of studying weak seismicity in the central part of the East-European platform using the new broadband seismic station «Aleksandrovka»","authors":"A. Goev, I. Sanina, N. Konstantinovskaya, O. V. Ovchinnikova","doi":"10.33623/0579-9406-2021-6-142-149","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-6-142-149","url":null,"abstract":"The registration possibilities of the new broadband seismic station “Aleksandrovka” are considered. It has been established that its hardware and installation conditions make it possible to monitor the central part of the East European craton in order to identify events of small magnitude and to clarify the coordinates of located events. It is shown that the criterion for recognizing the genesis of events, developed earlier for the MSG “Mikhnevo”, can be applied to the records of a single seismic station.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131366834","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}
Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-6-120-132
D. Zagranovskaya, S. Isaeva, A. P. Vilesov, V. Shashel, O. Zakharova, E. Belyakov, V. Demin, I. L. Kudin, G. Kalmykov
Properties of unconventional prospective deposits are interconnected by the rocesses of reservoir formation and oil and gas formation. Dispersed dolomite in situ formed during the maturation of TOC from syngenetic magnesium in the rock matrix increases the void space of the rock, thereby forming an unconventional reservoir filled with autochthonous hydrocarbons and oil components. In the process of TOC maturation and hydrocarbon migration, the TOC components are redistributed in the void space, thereby, the released volume of rocks is filled with stationary resinous asphaltene substances, which sharply reduces the reservoir properties of unconventional reservoirs. As a result, the definition of “organic” porosity includes a broader concept than just the porosity of kerogen. This is a more complex physicochemical process of transformation of the organic matter itself and the redistribution of elements within the formation as a result of the maturation of TOC components and hydrocarbon migration. When assessing the oil and gas potential in the section, we distinguish three groups of rocks: unconventional reservoirs with an increased TOC content and the presence of mobile hydrocarbons; bituminous rocks, in which part of the pore volume is filled with resinous-asphaltene substances and host dense carbonate rocks without organic matter. Also, sporadically developed traditional reservoirs are distinguished throughout the section of the Domanik type of rocks.
{"title":"Structure of continues reservoirs in the Domanik formation and petrophysical interpretation methods","authors":"D. Zagranovskaya, S. Isaeva, A. P. Vilesov, V. Shashel, O. Zakharova, E. Belyakov, V. Demin, I. L. Kudin, G. Kalmykov","doi":"10.33623/0579-9406-2021-6-120-132","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-6-120-132","url":null,"abstract":"Properties of unconventional prospective deposits are interconnected by the rocesses of reservoir formation and oil and gas formation. Dispersed dolomite in situ formed during the maturation of TOC from syngenetic magnesium in the rock matrix increases the void space of the rock, thereby forming an unconventional reservoir filled with autochthonous hydrocarbons and oil components. In the process of TOC maturation and hydrocarbon migration, the TOC components are redistributed in the void space, thereby, the released volume of rocks is filled with stationary resinous asphaltene substances, which sharply reduces the reservoir properties of unconventional reservoirs. As a result, the definition of “organic” porosity includes a broader concept than just the porosity of kerogen. This is a more complex physicochemical process of transformation of the organic matter itself and the redistribution of elements within the formation as a result of the maturation of TOC components and hydrocarbon migration. When assessing the oil and gas potential in the section, we distinguish three groups of rocks: unconventional reservoirs with an increased TOC content and the presence of mobile hydrocarbons; bituminous rocks, in which part of the pore volume is filled with resinous-asphaltene substances and host dense carbonate rocks without organic matter. Also, sporadically developed traditional reservoirs are distinguished throughout the section of the Domanik type of rocks.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128696826","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}
Pub Date : 2022-01-29DOI: 10.33623/0579-9406-2021-5-19-30
D. Simonov, V. S. Zakharov, G. Z. Gilmanova, A. Didenko
Morphostructural analysis of the relief and the analysis of the self-similarity characteristics of stream network of the Northern Sikhote-Alin and adjacent territories were carried out. The relief of the studied territory has an inherited character; it was formed in several stages during the neotectonic stage. The most intense vertical movements occurred at the early phases of the neotectonic stage. At Pleistocene time the intensity of vertical movements decreased significantly. At this time, the modern erosion-denudation forms of relief was formed. At the final stages of neotectonic development (at the end of the Pleistocene — Holocene), there was a slight activation of vertical movements with a changes in the structural plan and the manifestation of NNE stretched structures in the relief, which was reflected in the features of the residual relief. The boundaries of areas with increased residual relief coincide with areas of increased seismicity in the region. A modification of the complex self-similarity parameter PRNS was proposed, the use application of which allowed us to improve the correlation of this parameter with the latest (youngest) movements detected by the morphostructural method. Zones of maximum PRNS values correlate with the areas of greatest relief increment, and zones of it’s minimum correlate with areas the smallest relief increment, or areas of most significant erosion. The results of the analysis of the characteristics of self-similarity of the stream network are mainly comparable with the manifestations of vertical tectonic movements at the final stages of neotectonic development.
{"title":"Neotectonic vertical movements of Northern Sikhote-Alin and adjacent territories and its relationship with the characteristics of the stream network","authors":"D. Simonov, V. S. Zakharov, G. Z. Gilmanova, A. Didenko","doi":"10.33623/0579-9406-2021-5-19-30","DOIUrl":"https://doi.org/10.33623/0579-9406-2021-5-19-30","url":null,"abstract":"Morphostructural analysis of the relief and the analysis of the self-similarity characteristics of stream network of the Northern Sikhote-Alin and adjacent territories were carried out. The relief of the studied territory has an inherited character; it was formed in several stages during the neotectonic stage. The most intense vertical movements occurred at the early phases of the neotectonic stage. At Pleistocene time the intensity of vertical movements decreased significantly. At this time, the modern erosion-denudation forms of relief was formed. At the final stages of neotectonic development (at the end of the Pleistocene — Holocene), there was a slight activation of vertical movements with a changes in the structural plan and the manifestation of NNE stretched structures in the relief, which was reflected in the features of the residual relief. The boundaries of areas with increased residual relief coincide with areas of increased seismicity in the region. A modification of the complex self-similarity parameter PRNS was proposed, the use application of which allowed us to improve the correlation of this parameter with the latest (youngest) movements detected by the morphostructural method. Zones of maximum PRNS values correlate with the areas of greatest relief increment, and zones of it’s minimum correlate with areas the smallest relief increment, or areas of most significant erosion. The results of the analysis of the characteristics of self-similarity of the stream network are mainly comparable with the manifestations of vertical tectonic movements at the final stages of neotectonic development.","PeriodicalId":253271,"journal":{"name":"Moscow University Bulletin. Series 4. Geology","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122479631","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：