Earth sciences and subsoil use最新文献

{"title":"Magnetoelastic effect of kimberlite host rocks (Yakutsk diamondiferous province)","authors":"K. M. Konstantinov, M. Tomshin, M. S. Khoroshikh","doi":"10.21285/2686-9993-2023-46-4-344-363","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-4-344-363","url":null,"abstract":"The purpose of the research is to conduct petro- and paleomagnetic studies of Early Paleozoic rocks of the carbonate basement of a number of diamond deposits in the Yakutsk diamondiferous province in order to study the changes in petrophysical parameter values in the dynamic influence zone of a kimberlite pipe. It is shown that the formation of kimberlite diatremes accompanied by pulsating explosions shifting upwards brings about thermoelastic stress fields in the kimberlite-bearing medium, which are characterized by epigenetic changes and associated petrophysical heterogeneities (petrophysical anomalies). Petromagnetic heterogeneities of burning and stress are, therefore, some of these petrophysical anomalies, within which kimberlite-bearing rocks have contrastingly changed their original magnetic characteristics under the action of thermodynamic processes. Primarily, petromagnetic anomalies are reflected in the changed nature of the anisotropy of magnetic susceptibility: from sedimentary to dyke geotype. In addition, petromagnetic anomalies of magnetic susceptibility can be accompanied by the formation of metachronous natural residual magnetization vectors in kimberlite host rocks. The dimensions of petromagnetic anomalies (petromagnetic heterogeneities) may significantly exceed the size of the kimberlite pipe itself, which facilitates identification and delineation of the most promising areas. Besides, the magnetoelastic effect can create zones close to the kimberlite bodies that are hardly permeable for relatively viscous, protocrystal-rich mafic magmas. This is the reason for their wedging out along petrophysical barriers that is presented by splitting into thin tongues, formation of trap-free windows and corridors, toroidal shafts with sharply increasing thickness in intrusions, etc. Having relatively elevated values of magnetic and density parameters, such forms of igneous formations will be reflected in the observed geophysical fields. Thus, it is reasonable to consider petromagnetic anomalies as an important petrophysical search criterion for the detection of bedrock kimberlite bodies.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":" 1011","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139617380","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":"Evolution of orogenic gold mineralization in the southern and eastern framing structures of the Siberian craton","authors":"N. Goryachev, A. Budyak, T. I. Mikhalitsyna, Yu. I. Tarasova, I. N. Goryachev, O. T. Sotskaya","doi":"10.21285/2686-9993-2023-46-4-374-389","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-4-374-389","url":null,"abstract":"The purpose of the research is to compare the evolution of gold ore mineralization in the structures of the Baikal-Patom and Verkhoyansk-Kolyma marginal continental orogenic belts that arose on the passive margin of the Siberian continent in the Neoproterozoic-Paleozoic and Paleozoic-Mesozoic, and hosting the largest gold deposits in Russia. The similarities are noted as they reveal themselves in the characteristics of the mineralization stages, and in the typomorphism of pyrite that is the main mineral of ore formations. The study demonstrated the role of polychronic orogenic events of the Paleozoic and late Mesozoic times, which led to the formation of large fold belts in the development of large-scale gold mineralization of the southern and eastern framing of the Siberian craton. These events caused precious metals to mobilize and redistribute from precious metal-rich stratigraphic horizons as corresponding orogenic plutonometamorphic belts were formed. A comparative analysis of the Paleozoic-Mesozoic and Neoproterozoic-Paleozoic metallogenic profiles of the southern and eastern margins of the Siberian craton demonstrates the influence of the formation processes of orogenic gold mineralization, regardless of the composition of the host strata and mineralization age. General metallogenic characteristics of paleogeodynamic formation settings of noble metal mineralization of the orogenic-type, regardless of its age, can serve as the basis for geological-genetic and forecasting predictions as well as for the development of integrated assessment criteria for their prospects within the regions under investigation.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":" 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139617071","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":"Rapid X-ray fluorescence analysis as a modern alternative to traditional spectral methods in geochemical prospecting","authors":"O. V. Kuznetsova, O. Kachor, I. A. Matyuhin, Z. L. Ikramov, A. Parshin","doi":"10.21285/2686-9993-2023-46-4-390-401","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-4-390-401","url":null,"abstract":"The purpose of the study is to present the research results of the capabilities of modern portable rapid X-ray fluorescence analyzers when solving problems of geological and geochemical prospecting. On example of the applied SciAps X200 analyzer, the metrological indicators for the analysis results by portable instruments have been studied. The accuracy assessment results of analytical studies according to state standard reference samples are shown. Reproducibility of the analysis results is calculated on the basis of samples from promising gold sites of the Bodaibo synclinorium. The method is proved to be of high precision, and measurement errors in many cases are many times lower than the permissible certified values. The reproducibility is shown as 0,5–20 % depending on the element, which in most cases is significantly lower than the methodology permits. The results of interlaboratory comparative tests confirming the comparability of the analytical results of stationary and portable X-ray fluorescence analyzers are presented. For a number of significant elements, the authors have substantiated the lack of need to refine the results of the field rapid X-ray fluorescence analysis using labor-intensive and expensive methods with acid decomposition - atomic emission and atomic absorption spectroscopy. It has been proved that introduction of portable express equipment into geological prospecting works will make it possible to conduct real-time “on site” analytical studies.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"20 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139527189","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":"Analysis of the structure of lands disturbed by underground mining of ore deposits","authors":"E. A. Ivanov, B. Talgamer","doi":"10.21285/2686-9993-2023-46-4-413-422","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-4-413-422","url":null,"abstract":"The purpose of the work is to study and analyze the structure of the lands disturbed by the mining enterprises of Eastern Siberia and the Far East developing ore deposits. While the issue of disturbed land reclamation is treated today by the project documentation of the mining enterprises as an aggregate plan, there is a risk of leaving the lands without due attention after the completion of mining operations. The conducted study included the analysis of the disturbed land structure according to the project documentation and field observations at four mining enterprises. As a result, the nature of the disturbed land sites and their area was determined. The field research revealed disturbances not provided by the projects and requiring extraordinary solutions to eliminate them. The average structure of disturbed lands under underground mining of ore deposits was determined, its differences from the similar structure under open-pit mining were identified. It has been proven that the activities of mining enterprises involved in the underground development of ore deposits and reclamation of disturbed lands lack due attention, which leads to the growth in technogenic relief area and adverse environmental impacts. The presented research methodology includes field work with the visits to mining enterprises, as well as the analysis of design solutions and satellite images.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"59 28","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139527372","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":"First results of using mineral concentration methods for metal recover from technogenically contaminated soils with significant organic concentrations","authors":"V. Trusova, O. Kachor, A. S. Alekseev, A. Parshin","doi":"10.21285/2686-9993-2023-46-4-432-444","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-4-432-444","url":null,"abstract":"The purpose of the article is to present the research results on the application of concentration methods to hazardous waste from the industrial site of the former Vostsibelement battery plant located in the town of Svirsk, Irkutsk region (Russia), which is the facility of accumulated environmental damage. The previous studies have identified significant contents of heavy metals and arsenic that exceed standard values by hundreds and thousands of times in the industrial site soils. This fact determines soil high hazard class – II and III. To reduce the hazard class and decrease the volume of hazardous waste it is proposed to use a recuperative approach, that means to recover some metals and arsenic in order to return them in economic circulation. A spiral concentrator, a shaking table and a centrifugal concentrator were used for gravity concentration of metals and arsenic. The best results were obtained using a shaking table. The latter made it possible to increase the lead content in the concentrate by 22 times as compared to the content in the original sample, arsenic content by 7.7 times, and iron content by 16.7 times. Magnetic concentration of the shaking table middlings made it possible to obtain a concentrate with a high content and recovery of iron, copper and zinc. Despite the fact that the soil waste contains a significant amount of organic matter unlike the case of ore processing, the possibility of successful metal recover and significant reduction of metal concentrations in soil is shown. The proposals for a further waste-recycling scheme are made on the basis of the data obtained.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":" 785","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139617608","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":"Geology from hand to hand (to the 85th anniversary of the Professor Aleksey Ivanovich Trubachev)","authors":"A. T. Korolkov","doi":"10.21285/2686-9993-2023-46-2-234-243","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-2-234-243","url":null,"abstract":"This article is devoted to the Professor Aleksey Ivanovich Trubachev who is one of the most famous graduates of the Irkutsk Polytechnic Institute (now Irkutsk National Research Technical University), and his role in the formation  of a young geologist. Summarized published materials of the author of the article and his memoirs were transformed into  an essay on the life and creative activity of Aleksey Ivanovich Trubachev. Immediately after the graduation, he was sent to Trans-Baikal Integrated Research University (Chita) and joined a group of researchers investigating the unique Udokan deposit of copper sandstones and shales, which was headed by a well-known scientist, Deputy Director of the Institute Leonid Frantsevich Narkelyun. The largest works of A.I. Trubachev deal with the study of the material composition of the Udokan deposit ore bodies, the results of which are reflected in his candidate's dissertation defended at the Irkutsk Polytechnic University and in his doctoral dissertation defended in Novosibirsk. In all his works A.I. Trubachev proved the primary sedimentary genesis of the stratiform ores of the Udokan deposit, which was confirmed by the results of detailed exploration. In 1974, he started his teaching career. Today Aleksey Ivanovich is a professor at the Department of Minerals and Secondary Raw Materials Processing at the Trans-Baikal State University. For the period of his professional career, he has published 376 works, including 18 monographs, 19 teaching aids and textbooks on mineralogy, petrography and industrial mineralogy. A.I. Trubachev is actively involved in the creation of the unique mineralogical museum at the TransBaikal State University. The article pays special attention to the role of A.I. Trubachev in the formation of a young geologist during field works at the Udokan deposit. Field production practice is a major in the formation of a young geologist. In this case the most important things are the trust of the field mentor and early independent routing. Geologists and scientists like Professor A.I. Trubachev with extensive field and pedagogical experience certainly belong to the golden fund of the scientific and pedagogical personnel of Siberia.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115151994","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":"Comparative analysis of low-altitude magnetic survey sensitivity using unmanned aerial vehicles and land magnetic survey","authors":"N. Snegirev, S. Gachenko, A. Parshin","doi":"10.21285/2686-9993-2023-46-2-182-189","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-2-182-189","url":null,"abstract":"The subject of the study is the problem of the decline degree of the information content of geophysical data when switching from land surveys to low-altitude geophysical survey using unmanned aerial vehicles. The research involves a comparative analysis of the information content of the unmanned aerial vehicle survey results and those of the land magnetic survey. The conducted research allowed to present the observed values of the magnetic field obtained  by both survey methods within the same area as well as the final information products in the form of the results of filtering and three-dimensional data inversion. It is shown that visual analysis of maps of the full vector of magnetic field strength gives the impression of a lower information content of magnetic survey performed by unmanned aerial vehicles. However, the data having been processed create final information products of identical information content. This concerns both the results of three-dimensional modeling of the effective magnetic susceptibility, and maps and plots of the anomalous magnetic field after filtering in a sliding window. The negative impact of geological interference from morainic deposits on ground data is also shown. Local magnetic anomalies based on unmanned aerial vehicle survey results can confidently correlate with land survey anomalies, whereas the data collected during low-altitude aeromagnetic survey using unmanned aerial vehicles have a lower error probability. The conclusions refer to a specific case and cannot be unambiguously applied  to any geological situation, however, the authors believe in the typicality of this example.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122330221","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":"Formation stages of the Kholodninskoye pyrite-polymetallic deposit ore zone","authors":"Yu. I. Tarasova, A. Budyak","doi":"10.21285/2686-9993-2023-46-2-201-211","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-2-201-211","url":null,"abstract":"The Kholodninskoe pyrite-polymetallic deposit (Baikal-Patom plateau, Russia) was discovered in 1968, but the questions of its genesis still remain controversial. It is assumed that the explosive activity of volcanic apparatuses of the southern part of the Baikal-Muya zone as well as underwater exhalations of the scattered spreading zone of the back-arc basin could have most likely influenced the geochemical features of amagmatic deposits of the Bodaibo and Patom zones. To investigate the influence of underwater hydrothermal activity on the geochemical features of Neoproterozoic carbonbearing sediments of the Baikal Mountain region, the Olokit zone, which is a fragment of the spreading zone of the backarc basin, was chosen. According to the geochemical parameters, the sediments of the Itykit and Ondokskaya formations hosting the Kholodninskoye deposit fall into the sedimentation area of DalnyaTaiga period paleobasins. Having compared the development of sulfide mineralization of ore objects of the Bodaibo and Olokit structural-formation zones, the authors suggest the unity of deposit formation processes within the Baikal Mountain area. The presence of framboidal pyrite indicates that the early stages of ore formation of the Kholodninskoe hydrothermal-stratiform polymetallic deposit were synchronous with sedimentation. The source of deposit ore zone enrichment with zinc lead, silver and other elements typical for low- and medium-temperature associations was a hydrothermal solution of the scattered spreading zone of back-arc basins. It is likely that the explosive and exhalation activities of the southern Baikal-Muya zone within the studied region also spread further northward, thus influencing the formation of siderochalcophilic geochemical specialization of amagmatic black shale strata of the Bodaibo and Patom zones. ","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132997118","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":"Submersible pumpset failure prediction using artificial intelligence methods","authors":"E. Shakirova, M. V. Semykin","doi":"10.21285/2686-9993-2023-46-2-226-233","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-2-226-233","url":null,"abstract":"It is well-known that large amounts of data are collected and processed during the operation of electric submersible pumps. To optimize the work of mining control center operators, it is recommended to use an automated emergency prevention system. In this way, operators will be able to receive timely information about possible equipment failures, which in its turn will increase the service life of the equipment and reduce operating costs for repairs. The purpose of the present research is to develop a model predicting submersible pumping equipment failures using the method of artificial intelligence. To identify the most accurate model, the paper compares the following forecasting methods: the nearest neighbour method and the linear classifier building method. The presented correlation was created on the basis of 30 parameters obtained from 272 wells of the Eastern Siberia field. Being used, it enabled error-free prediction of failures and complications in pumping equipment operation depending on the gas factor and frequency. Thus, the developed model can be used by oil and gas enterprises to predict failures and accidents in the operation of submersible pumping equipment. The conducted study shows that the prediction accuracy of the required parameter in the developed artificial intelligence model exceeds the results of conventional statistical methods. The model also can be useful for future optimization of processes when field planning and developing. Artificial intelligence is the best prediction method of submersible pumping equipment failures, due to its high speed and accuracy, cognitive technologies are widely used in big data processing.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"456 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123640610","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":"Formation features of the Svirsk fresh groundwater deposit","authors":"A. Kuranicheva, Yu. K. Lankin, O. O. Naumova, E. S. Verkhozina","doi":"10.21285/2686-9993-2023-46-2-190-200","DOIUrl":"https://doi.org/10.21285/2686-9993-2023-46-2-190-200","url":null,"abstract":"The object of the study is the Svirsk deposit of fresh groundwater located in the central part of the Irkutsk artesian basin of the second order, which is a part of the Angara-Lena artesian basin of the first order (Irkutsk region, Russia). Geologically, the area under investigation is located within the Pre-Sayan depression, which is complicated by the Irkutsk basement bench. The studied Svirsk hydraulic depression is confined to the tectonic crush zone of the Lower Cambrian carbonate rocks stripping from the mouth of the Kotikha river valley to the mouth of the Kamenka river valley between the bedrock slope and the Angara river (Bratsk reservoir since 1967). The purpose of this study is to study the formation features, supply sources and hydrogeochemical conditions of the deposit based on the analysis of hydrogeological work carried out over the period from 1968 to 2012. The research methodology includes the search for a site with high reservoir properties and high quality of groundwater meeting drinking requirements, which is located in the influence area of constant head boundaries (attracted resources of the Angara river) using a comprehensive geomorphological analysis. The described deposit is characterized by the aquifer thickness from 13 to 38.7 m, composed of karst carbonate deposits. The water conductivity coefficient is 1284–2500 m2/day, well flow rates vary from 4.88 l/s (422 m3/day) to 18.2 l/s (1572 m3/day) with a decrease of 0.78–1m respectively. The qualitative composition of groundwater meets the standards, whereas outside the field, quality indicators deteriorate. The authors have studied the neotectonic formation conditions of the deposit of underground drinking water, whose quality meets the requirements of the centralized water supply, the main source of which is the attracted resources of the Bratsk reservoir. ","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126086032","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}