Pub Date : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-150-165
I. S. Novikov
Geological and geomorphic works were carried out with a geomorphological survey with a detail of 1: 10,000 in the central part of Salair. The middle of the Salair peneplanation planes is widely distributed here – the Late Cretaceous-Early Paleogene, formed at elevations slightly exceeding the denudation basis – the level of the World Ocean at that time, which was 250 m above the modern one. Its current absolute marks are about 400 m, that corresponds to the neotectonic rise of the territory with an amplitude of 150 m. At the beginning of the Quaternary,a vigorous downcutting of hydrographic network occurred with its stabilization and transition to a perstratal regime at elevations 10–15 m below the сurrent encroachment line of stream flows as a result of neotectonic bulging up of the territory and further drawdown in the level of the World Ocean. Massive deposition of aeolian material occurred in the Middle Quaternary. The thickness of the cover loams on watersheds is currently up to 55 m. From valley slopes aeolian loams entered the hydraulic network and overlapped the Early Quaternary alluvium, with which the main gold-bearing alluvial placers of the territory are associated. During reoccurring downcutting, there was an abstraction of watercourse heads of the southwestern slope by watercourses of the northeastern slope of Salair with a displacement of the main watershed in some areas by 5–6 km to the southwest. Emerging buried areas of paleovalleys represent prospective targets in search for placers. The hydrographic network that arose during reoccurrung downcutting does not repeat in detail the Early Quaternary one and ancient alluvium oft en underlays slope deposits with a displacement beyond the bottom of modern valleys to the first tens of meters. Conducting a large-scale geomorphological survey makes it possible to identify areas of ancient valleys with potentially gold-bearing alluvium, which usually remain untested during prospecting and exploration.
{"title":"HISTORY OF THE RIVER NETWORK DEVELOPMENT, GEOMORPHIC STRUCTURE AND PROSPECTS OF GOLD MINERALIZATION IN THE CENTRAL PART OF SALAIR","authors":"I. S. Novikov","doi":"10.20403/2078-0575-2023-4b-150-165","DOIUrl":"https://doi.org/10.20403/2078-0575-2023-4b-150-165","url":null,"abstract":"Geological and geomorphic works were carried out with a geomorphological survey with a detail of 1: 10,000 in the central part of Salair. The middle of the Salair peneplanation planes is widely distributed here – the Late Cretaceous-Early Paleogene, formed at elevations slightly exceeding the denudation basis – the level of the World Ocean at that time, which was 250 m above the modern one. Its current absolute marks are about 400 m, that corresponds to the neotectonic rise of the territory with an amplitude of 150 m. At the beginning of the Quaternary,a vigorous downcutting of hydrographic network occurred with its stabilization and transition to a perstratal regime at elevations 10–15 m below the сurrent encroachment line of stream flows as a result of neotectonic bulging up of the territory and further drawdown in the level of the World Ocean. Massive deposition of aeolian material occurred in the Middle Quaternary. The thickness of the cover loams on watersheds is currently up to 55 m. From valley slopes aeolian loams entered the hydraulic network and overlapped the Early Quaternary alluvium, with which the main gold-bearing alluvial placers of the territory are associated. During reoccurring downcutting, there was an abstraction of watercourse heads of the southwestern slope by watercourses of the northeastern slope of Salair with a displacement of the main watershed in some areas by 5–6 km to the southwest. Emerging buried areas of paleovalleys represent prospective targets in search for placers. The hydrographic network that arose during reoccurrung downcutting does not repeat in detail the Early Quaternary one and ancient alluvium oft en underlays slope deposits with a displacement beyond the bottom of modern valleys to the first tens of meters. Conducting a large-scale geomorphological survey makes it possible to identify areas of ancient valleys with potentially gold-bearing alluvium, which usually remain untested during prospecting and exploration.","PeriodicalId":52268,"journal":{"name":"Geology and Mineral Resources of Siberia","volume":"27 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139188770","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 : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-179-185
A. N. Fomin
The source material nature of the Barzas coals of Kuzbass has been controversial for a long time. Some researchers consider that they are composed mainly of remains of higher plants, others believe that these coals consist of lower plants, and there is an opinion about a combined participation of both. The author, taking intoaccount the literature and his own coal petrographic data as well as isotopic and elementary analyses, believes that the first primitive higher plants served as the source material of slabby barzassites.
{"title":"ABOUT THE SOURCE MATERIAL OF BARZAS COALS OF KUZBASS","authors":"A. N. Fomin","doi":"10.20403/2078-0575-2023-4b-179-185","DOIUrl":"https://doi.org/10.20403/2078-0575-2023-4b-179-185","url":null,"abstract":"The source material nature of the Barzas coals of Kuzbass has been controversial for a long time. Some researchers consider that they are composed mainly of remains of higher plants, others believe that these coals consist of lower plants, and there is an opinion about a combined participation of both. The author, taking intoaccount the literature and his own coal petrographic data as well as isotopic and elementary analyses, believes that the first primitive higher plants served as the source material of slabby barzassites.","PeriodicalId":52268,"journal":{"name":"Geology and Mineral Resources of Siberia","volume":"45 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139192336","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 : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-186-195
A. I. Gusev, N. Gusev
The paper gives new data on the geological structure, ore mineralization, composition, petrography, absolute age, petrology and geochemistry of Timofeev stock of Gorny Altai. The absolute age of monzogabbroes of the stock intrusion lower phase is defined as 397 Ma, that corresponds to the Lower Devonian. Nd-model age of protolith during melting of gabbroids composes 893 Ma, that is characteristic of transit zone from the Middle Paleozoic consolidation to the Altai – Mongolian terrain. According to the chemistry, the Timofeev stock rocks belong to the lime-alkali and shoshonite series. The geodynamic aspect of melt generation is interpreted by mixing alkaline oceanic basalts of the plume setting and normal oceanic basalts of mid-oceanic ridges that took place in the Paleo-Asian Ocean evolution in the Early Paleozoic. Samarium-neodymium isotopic labels of gabbroids indicate the proximity of their values to chondrite meteorites. The ratio of neodymium isotopes with gabbro age indicates that the isotopically varying earth’s crust, close to the depleted mantle, existed under the Korgon trough in the Early Paleozoic. The skarn-iron-ore deposit of the same name is spatially and paragenetically connected with the Timofeev stock.
{"title":"ABSOLUTE AGE, PETROLOGY, GEOCHEMISTRY AND ORE MINERALIZATION OF TIMOFEEV MASSIF OF GORNY ALTAI","authors":"A. I. Gusev, N. Gusev","doi":"10.20403/2078-0575-2023-4b-186-195","DOIUrl":"https://doi.org/10.20403/2078-0575-2023-4b-186-195","url":null,"abstract":"The paper gives new data on the geological structure, ore mineralization, composition, petrography, absolute age, petrology and geochemistry of Timofeev stock of Gorny Altai. The absolute age of monzogabbroes of the stock intrusion lower phase is defined as 397 Ma, that corresponds to the Lower Devonian. Nd-model age of protolith during melting of gabbroids composes 893 Ma, that is characteristic of transit zone from the Middle Paleozoic consolidation to the Altai – Mongolian terrain. According to the chemistry, the Timofeev stock rocks belong to the lime-alkali and shoshonite series. The geodynamic aspect of melt generation is interpreted by mixing alkaline oceanic basalts of the plume setting and normal oceanic basalts of mid-oceanic ridges that took place in the Paleo-Asian Ocean evolution in the Early Paleozoic. Samarium-neodymium isotopic labels of gabbroids indicate the proximity of their values to chondrite meteorites. The ratio of neodymium isotopes with gabbro age indicates that the isotopically varying earth’s crust, close to the depleted mantle, existed under the Korgon trough in the Early Paleozoic. The skarn-iron-ore deposit of the same name is spatially and paragenetically connected with the Timofeev stock.","PeriodicalId":52268,"journal":{"name":"Geology and Mineral Resources of Siberia","volume":"33 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189469","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 : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-196-205
M. Mishenin, N. V. Yurkevich, I. V. Filimonova, A. P. Samatova
The article provides technical and economic feasibility of the barite concentrate production from a technogenic tailing dump located in Ursk, Kemerovo region. The methods of extraction and options for implementation of the resulting concentrate were evaluated and key indicators of the investment projectand economical effectivity of obtaining barite concentrate were calculated. The analysis of formation and development of rational subsoil use in Russia and abroad was carried out. The paper presents periodization of various approaches and development of the subsoil users control from the state in relation to the legal aspects of the use of technogenic objects. The vocabulary of technogenic dumps and deposits was considered, methodological approaches of ecological and economic and ecological and geological assessments of investment attractiveness of the technogenic objects development were analyzed. Calculations of integrated approach for technogenic waste processing were carried out. The evaluation of cost-effectiveness analysis was conducted on the basis of method for evaluating the cost-effectiveness analysis of the solid minerals production.
{"title":"FEASIBILITY OF INVESTMENT ATTRACTIVENESS FOR THE DEVELOPMENT OF TECHNOGENIC DUMP WITH A HIGH CONCENTRATION OF BARITE","authors":"M. Mishenin, N. V. Yurkevich, I. V. Filimonova, A. P. Samatova","doi":"10.20403/2078-0575-2023-4b-196-205","DOIUrl":"https://doi.org/10.20403/2078-0575-2023-4b-196-205","url":null,"abstract":"The article provides technical and economic feasibility of the barite concentrate production from a technogenic tailing dump located in Ursk, Kemerovo region. The methods of extraction and options for implementation of the resulting concentrate were evaluated and key indicators of the investment projectand economical effectivity of obtaining barite concentrate were calculated. The analysis of formation and development of rational subsoil use in Russia and abroad was carried out. The paper presents periodization of various approaches and development of the subsoil users control from the state in relation to the legal aspects of the use of technogenic objects. The vocabulary of technogenic dumps and deposits was considered, methodological approaches of ecological and economic and ecological and geological assessments of investment attractiveness of the technogenic objects development were analyzed. Calculations of integrated approach for technogenic waste processing were carried out. The evaluation of cost-effectiveness analysis was conducted on the basis of method for evaluating the cost-effectiveness analysis of the solid minerals production.","PeriodicalId":52268,"journal":{"name":"Geology and Mineral Resources of Siberia","volume":"21 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139192814","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 : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-109-118
I. G. Zakiryanov, V. Luchinina, N. Sennikov
The article presents the study results of carbonaceous rocks and taxonomic diversity of the Upper Ordovician calcareous algae of the Tachalov section left half, located on the left side of the same-name creek in the central district of the Charysh-Inya structure-facies zone of Gorny Altai. Six microfacies are distinguished in rocks: algal-bacterial boundstones, crinoid mudstones, crinoid-algal wackestones, polybioclastic wackestones, crinoid-algal packstone-wackestones and crinoid-algal packstones. Calcareous algae of the following genera were recorded in limestones: Proaulopora Volgdin, 1934 (Ms), Girvanella Nicholson et Etheridge, 1878, Vermiporella Stolley, 1893, Apidium Stolley, 1896, Ortonella Garwood, 1914, Contexta Gnilovskaja, 1972, Halysis Høeg, 1932, Rothpletzella Wood, 1948. It is found, that during the formation of biohermal buildups in more active hydrodynamics, different groups of calcareous algae react either by increasing species diversity (like green algae) or by increasing the number of organisms of the same species (like red algae).
{"title":"MICROFACIES AND PALEOALGOLOGICAL COMPLEXES OF CARBONATES OF THE UPPER ORDOVICIAN TACHALOV SECTION (WEST OF GORNY ALTAI)","authors":"I. G. Zakiryanov, V. Luchinina, N. Sennikov","doi":"10.20403/2078-0575-2023-4b-109-118","DOIUrl":"https://doi.org/10.20403/2078-0575-2023-4b-109-118","url":null,"abstract":"The article presents the study results of carbonaceous rocks and taxonomic diversity of the Upper Ordovician calcareous algae of the Tachalov section left half, located on the left side of the same-name creek in the central district of the Charysh-Inya structure-facies zone of Gorny Altai. Six microfacies are distinguished in rocks: algal-bacterial boundstones, crinoid mudstones, crinoid-algal wackestones, polybioclastic wackestones, crinoid-algal packstone-wackestones and crinoid-algal packstones. Calcareous algae of the following genera were recorded in limestones: Proaulopora Volgdin, 1934 (Ms), Girvanella Nicholson et Etheridge, 1878, Vermiporella Stolley, 1893, Apidium Stolley, 1896, Ortonella Garwood, 1914, Contexta Gnilovskaja, 1972, Halysis Høeg, 1932, Rothpletzella Wood, 1948. It is found, that during the formation of biohermal buildups in more active hydrodynamics, different groups of calcareous algae react either by increasing species diversity (like green algae) or by increasing the number of organisms of the same species (like red algae).","PeriodicalId":52268,"journal":{"name":"Geology and Mineral Resources of Siberia","volume":"62 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139192889","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 : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-119-129
N. V. Melnikov, L. V. Ryabkova
The present paper gives the structure analysis of the lower section part of Riphean-Vendian sediments of the Nyuya zone in the south-east of the Siberian Platform. The study results showed a complex heterochronous structure of the Talakan Formation section. The sharp difference in lithological rock composition, presence of depositional breaks of the Lower Talakan Subformation does not allow leaving this part of the section as a part of the Talakan Formation. It is proposed to refer the deposits of the lower part of the Talakan Formation to the older ones. The article is a continuation of series of works devoted to the improvement of stratigraphic schemes for the Vendian-Riphean of the Siberian Platform.
{"title":"THE VENDIAN VILYUCHAN HORIZON IN THE NYUYA ZONE IN THE SOUTH-EAST OF THE SIBERIAN PLATFORM","authors":"N. V. Melnikov, L. V. Ryabkova","doi":"10.20403/2078-0575-2023-4b-119-129","DOIUrl":"https://doi.org/10.20403/2078-0575-2023-4b-119-129","url":null,"abstract":"The present paper gives the structure analysis of the lower section part of Riphean-Vendian sediments of the Nyuya zone in the south-east of the Siberian Platform. The study results showed a complex heterochronous structure of the Talakan Formation section. The sharp difference in lithological rock composition, presence of depositional breaks of the Lower Talakan Subformation does not allow leaving this part of the section as a part of the Talakan Formation. It is proposed to refer the deposits of the lower part of the Talakan Formation to the older ones. The article is a continuation of series of works devoted to the improvement of stratigraphic schemes for the Vendian-Riphean of the Siberian Platform.","PeriodicalId":52268,"journal":{"name":"Geology and Mineral Resources of Siberia","volume":"43 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139193795","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 : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-206-212
A. I. Emelyanov
In April 2023, exactly 100 years have passed since the iron-ore core was taken from a well drilled in the Shchigry area of Kursk province, thereby the secret of the Kursk magnetic anomaly (KMA) nature was revealed and the beginning of the world’s largest iron-ore deposits development was marked. This article is devoted to the history of one of the greatest discoveries of geologists of the first half of the 20th century, full of actionpacked and dramatic events.
{"title":"IRON-ORE BASIN OF THE KURSK MAGNETIC ANOMALY. THE HISTORY OF THE GREATEST DISCOVERY OF THE FIRST HALF OF THE XX CENTURY IN RUSSIA. PART II. DISCOVERY OF THE IRON-ORE BASIN OF THE KURSK MAGNETIC ANOMALY","authors":"A. I. Emelyanov","doi":"10.20403/2078-0575-2023-4b-206-212","DOIUrl":"https://doi.org/10.20403/2078-0575-2023-4b-206-212","url":null,"abstract":"In April 2023, exactly 100 years have passed since the iron-ore core was taken from a well drilled in the Shchigry area of Kursk province, thereby the secret of the Kursk magnetic anomaly (KMA) nature was revealed and the beginning of the world’s largest iron-ore deposits development was marked. This article is devoted to the history of one of the greatest discoveries of geologists of the first half of the 20th century, full of actionpacked and dramatic events.","PeriodicalId":52268,"journal":{"name":"Geology and Mineral Resources of Siberia","volume":"12 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189928","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 : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-166-178
B. B. Gerasimov, A. Zhuravlev, A. I. Ivanov, M. Ivanov
The paper deals with studied mineralogical and geochemical features of gold-sulphide manifestations of the Sololi uplift of the Olenek arch (northeast of the Siberian Platform) in order to identify their mineralogical features and prospects for their further research. The identical mineral composition of gold-sulphide formations developed by Early Proterozoic rocks of the Eekitian series and rhyolites of the same age gave reason to assume the simultaneity of their formation and to refer them to the general stage of ore formation. According to the established mineral paragenesis, described gold sulphide manifestations are attributed to the gold-quartzsulphide formation type. The discovery of gold sulphide mineralization in the zone of tectonic fracturing of Early-Middle Permian sandstones indicates the formation of ore occurrences in the area associated with the processes of tectonomagmatic activation of the Mesozoic. The identification of indicators of low-temperature hydrothermal processes as mineral paragenesis – mercury-containing gold, cinnabar and barite, testifies to shallow and low-temperature conditions for the formation of this ore manifestation. It was found that according to the Co/Ni ratio, 28% of pyrites (including gold-bearing ones) are associated with hydrothermal processes. In general, the detection of native gold in quartz veins in free form and as microinclusions and impurities in pyrite, as well as the discovery of relatively large poorly rounded attachments of gold to quartz in stream flows dewatering the studied ore formations, allows researchers to positively assess the prospects for further study of ore manifestations of the Sololi uplift of the Olenek arch.
{"title":"MINERALOGICAL FEATURES OF GOLD ORE MANIFESTATIONS OF THE SOLOLI UPLIFT OF THE OLENEK ARCH","authors":"B. B. Gerasimov, A. Zhuravlev, A. I. Ivanov, M. Ivanov","doi":"10.20403/2078-0575-2023-4b-166-178","DOIUrl":"https://doi.org/10.20403/2078-0575-2023-4b-166-178","url":null,"abstract":"The paper deals with studied mineralogical and geochemical features of gold-sulphide manifestations of the Sololi uplift of the Olenek arch (northeast of the Siberian Platform) in order to identify their mineralogical features and prospects for their further research. The identical mineral composition of gold-sulphide formations developed by Early Proterozoic rocks of the Eekitian series and rhyolites of the same age gave reason to assume the simultaneity of their formation and to refer them to the general stage of ore formation. According to the established mineral paragenesis, described gold sulphide manifestations are attributed to the gold-quartzsulphide formation type. The discovery of gold sulphide mineralization in the zone of tectonic fracturing of Early-Middle Permian sandstones indicates the formation of ore occurrences in the area associated with the processes of tectonomagmatic activation of the Mesozoic. The identification of indicators of low-temperature hydrothermal processes as mineral paragenesis – mercury-containing gold, cinnabar and barite, testifies to shallow and low-temperature conditions for the formation of this ore manifestation. It was found that according to the Co/Ni ratio, 28% of pyrites (including gold-bearing ones) are associated with hydrothermal processes. In general, the detection of native gold in quartz veins in free form and as microinclusions and impurities in pyrite, as well as the discovery of relatively large poorly rounded attachments of gold to quartz in stream flows dewatering the studied ore formations, allows researchers to positively assess the prospects for further study of ore manifestations of the Sololi uplift of the Olenek arch.","PeriodicalId":52268,"journal":{"name":"Geology and Mineral Resources of Siberia","volume":"17 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189240","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 : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-130-137
A. N. Nikitenkov, D. A. Novikov, A. Maksimova, A. V. Penigin, L. Vakulenko, I. V. Varaksina, E. A. Zhukovskaya
The paper is aimed at the research practice on identifying the features of interaction in the water-rockcarbon dioxide system in relation to terrigenous reservoirs, widely occurring in hydrogeological basins in the territory of the Russian Federation and potentially suitable for the placement of carbon dioxide. As the CO2 solution is saturated, along with an increase in total dissolved solids there is a naturally-determined increment in the volume of transition of ions into their complex forms. The main macro components (Ca2+, Mg2+, Na+, K+, (SO4)2–, Cl– ) migrate mainly in the form of their own ions, with a decrease in their fraction by an order of 1–3 % with an increase in mineralization. Ions such as Fe, Al3+, Mn3+, (NO3)–, (HCO3)–, SiO2, (NH4)+, (NO2)– are prone to transition into the form of complex compounds, the fraction of which in the total volume increases with the amount of saturation of solution with carbon dioxide. When CO2 is injected into the terrigenous reservoir, there is a natural decrease in the solution pH, absence of precipitation of carbonates and minimal changes in the rock porosity. The observed process of dissolution of primary aluminosilicate minerals (albite, anorthite, potassium feldspar) is characteristic of most of the considered mineralogical varieties of reservoirs, when they are saturated with CO2. This process is accompanied by deposition of secondary mineral phases in the form of montmorillonites, illites, chlorites, etc. Taking into account the low rates of these reactions, no significant changes in reservoir properties are noticed.
{"title":"GEOCHEMICAL CONSEQUENCES OF CARBON DIOXIDE DISPOSAL IN TERRIGENOUS RESERVOIRS","authors":"A. N. Nikitenkov, D. A. Novikov, A. Maksimova, A. V. Penigin, L. Vakulenko, I. V. Varaksina, E. A. Zhukovskaya","doi":"10.20403/2078-0575-2023-4b-130-137","DOIUrl":"https://doi.org/10.20403/2078-0575-2023-4b-130-137","url":null,"abstract":"The paper is aimed at the research practice on identifying the features of interaction in the water-rockcarbon dioxide system in relation to terrigenous reservoirs, widely occurring in hydrogeological basins in the territory of the Russian Federation and potentially suitable for the placement of carbon dioxide. As the CO2 solution is saturated, along with an increase in total dissolved solids there is a naturally-determined increment in the volume of transition of ions into their complex forms. The main macro components (Ca2+, Mg2+, Na+, K+, (SO4)2–, Cl– ) migrate mainly in the form of their own ions, with a decrease in their fraction by an order of 1–3 % with an increase in mineralization. Ions such as Fe, Al3+, Mn3+, (NO3)–, (HCO3)–, SiO2, (NH4)+, (NO2)– are prone to transition into the form of complex compounds, the fraction of which in the total volume increases with the amount of saturation of solution with carbon dioxide. When CO2 is injected into the terrigenous reservoir, there is a natural decrease in the solution pH, absence of precipitation of carbonates and minimal changes in the rock porosity. The observed process of dissolution of primary aluminosilicate minerals (albite, anorthite, potassium feldspar) is characteristic of most of the considered mineralogical varieties of reservoirs, when they are saturated with CO2. This process is accompanied by deposition of secondary mineral phases in the form of montmorillonites, illites, chlorites, etc. Taking into account the low rates of these reactions, no significant changes in reservoir properties are noticed.","PeriodicalId":52268,"journal":{"name":"Geology and Mineral Resources of Siberia","volume":"33 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139192853","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 : 2023-12-01DOI: 10.20403/2078-0575-2023-4b-138-149
G. Leonova, O. Belozerova, T. S. Aisueva, A. Maltsev
The paper deals with a detailed study of the Holocene core of drilling peat deposits of the upland (oligotrophic) Dulikha bog. Based on the results of non-destructive X-ray fluorescence analysis, SiO2, Al2O3 and Fe2O3 oxides predominate in the peat deposit chemical composition along the section depth. The main minerals of the peat ash part are mica, quartz, plagioclase, bassanite, potassium feldspar; secondary one is chlorite, accessory ones are amphibole, illite. The study results of peat substance by energy-dispersive X-ray microanalysis showed that peat deposits are represented by a mixture of particles and conglomerates of various shapes and sizes. The elemental composition of the main matrix of samples is presented by an organic component with a high content of C and O and silicate mineral component with a content of Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, Cr, Mn, Fe. Single small bright particles of facetted and semi-facetted shape with a high content of Fe, Ti, Ca, Ba and W occur in almost all studied peat samples. The mineral component of these particles may be represented by magnetites, titanites, single metal granules. The upper interval of the peat bog section (0-20 cm) is characterized by increased concentrations of Cu and Zn, that may be due to both anthropogenic stress on swamp ecosystems and high biophillyng, i.e. the ability to accumulate living matter.
本文论述了对高地（寡营养）杜里哈沼泽全新世泥炭沉积钻探岩心的详细研究。根据无损 X 射线荧光分析的结果，泥炭沉积物的化学成分沿断面深度以 SiO2、Al2O3 和 Fe2O3 氧化物为主。泥炭灰部分的主要矿物为云母、石英、斜长石、斜长石、钾长石，次要矿物为绿泥石，辅助矿物为闪石、伊利石。通过能量色散 X 射线显微分析法对泥炭物质进行的研究结果表明，泥炭沉积物是由各种形状和大小的颗粒和砾石组成的混合物。样品主基质的元素组成为有机成分（C 和 O 含量较高）和硅酸盐矿物成分（Na、Mg、Al、Si、P、S、Cl、K、Ca、Ti、Cr、Mn、Fe 含量较高）。在几乎所有研究过的泥炭样本中，都会出现单个明亮的小颗粒，其形状为刻面和半刻面，Fe、Ti、Ca、Ba 和 W 含量较高。这些颗粒的矿物成分可能是磁铁矿、钛铁矿、单一金属颗粒。泥炭沼泽剖面的上部区间（0-20 厘米）的特点是铜和锌的浓度增加，这可能是由于沼泽生态系统受到人为压力和生物嗜酸性（即积累生物物质的能力）较高所致。
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