Tat'yana Mityusheva, Valentina Katkova, V. Filippov, E. Tropnikov, E. Patova
This article describes crystallization formed in the exogenous mucous sheath of phototrophic microorganisms living in the surface waters of the south area of the Komi Republic. The mineralization of colonies of cyanobacteria of the Gloeotrichia sp. and green algae Chaetophora elegans was studied. The waters of rivers in the Northern Dvina basin have been studied as habitats for the microorganisms. They have a different composition: HCO3 Ca–Mg, typical for the taiga zone of a temperate continental climate; SO4–HCO3 Ca–Mg and Cl–Na (in the zone of technogenic pollution). Using the example of these neutral — weakly alkaline ultrafresh — salty (0.2—2.8 g/L) waters, it is shown that the geochemistry of the aquatic environment is one of the most important factors influencing the minerogenesis. Calcite, vaterite, quartz and halite were identified in dried colonies of microorganisms within the extracellular polymeric substance using the methods of X-ray diffractometry, electron microscopy, microprobe analysis and IR spectroscopy. The morphological features of microminerals are presented depending on the type of microorganisms. Calcium carbonate crystals and aggregates are formed within the exogenous mucous sheath of algae and cyanophytes. The carbon isotope composition of carbonates (13C –7.5 and –3.8 ‰ PDB) indicates their organic nature. The formation of minerals, morphological features of crystals and the degree of biomineralisation of colonies of phototrophic microorganisms are conditioned by the physicochemical parameters of the aquatic environment. The possibilities of chemogenic precipitation of carbonates from the studied natural waters were assessed.
{"title":"Influence of aquatic environmental factors on mineralization of cyanobacteria and green algae (Komi Republic)","authors":"Tat'yana Mityusheva, Valentina Katkova, V. Filippov, E. Tropnikov, E. Patova","doi":"10.19110/geov.2024.2.3","DOIUrl":"https://doi.org/10.19110/geov.2024.2.3","url":null,"abstract":"This article describes crystallization formed in the exogenous mucous sheath of phototrophic microorganisms living in the surface waters of the south area of the Komi Republic. The mineralization of colonies of cyanobacteria of the Gloeotrichia sp. and green algae Chaetophora elegans was studied. The waters of rivers in the Northern Dvina basin have been studied as habitats for the microorganisms. They have a different composition: HCO3 Ca–Mg, typical for the taiga zone of a temperate continental climate; SO4–HCO3 Ca–Mg and Cl–Na (in the zone of technogenic pollution). Using the example of these neutral — weakly alkaline ultrafresh — salty (0.2—2.8 g/L) waters, it is shown that the geochemistry of the aquatic environment is one of the most important factors influencing the minerogenesis. Calcite, vaterite, quartz and halite were identified in dried colonies of microorganisms within the extracellular polymeric substance using the methods of X-ray diffractometry, electron microscopy, microprobe analysis and IR spectroscopy. The morphological features of microminerals are presented depending on the type of microorganisms. Calcium carbonate crystals and aggregates are formed within the exogenous mucous sheath of algae and cyanophytes. The carbon isotope composition of carbonates (13C –7.5 and –3.8 ‰ PDB) indicates their organic nature. The formation of minerals, morphological features of crystals and the degree of biomineralisation of colonies of phototrophic microorganisms are conditioned by the physicochemical parameters of the aquatic environment. The possibilities of chemogenic precipitation of carbonates from the studied natural waters were assessed.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"46 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140663223","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}
V. Silaev, V. Zernitskaya, V. Filippov, I. Smoleva, G. Ignatjev, B. Makeev, A. Khazov, Yu. Giginyak, A. Gajdashov
Using a complex of mineralogical and geochemical methods, the basal sedimentary horizon (“moraine” sedimentary complex) in Lake Nizhny in East Antarctica was studied. The bulk chemical composition, microelements, rock-forming and accessory minerals, and carbon matter were analyzed. According to all data, the studied sedimentary deposits are volcanogenic in nature, at least partially formed due to explosive products of eruptions of Mount Erebus.
{"title":"Mineralogical and geochemical properties of the “Moraine” complex of Holozene sediments in Lake Nizhneye (East Antarctica) as a source of new genetical information","authors":"V. Silaev, V. Zernitskaya, V. Filippov, I. Smoleva, G. Ignatjev, B. Makeev, A. Khazov, Yu. Giginyak, A. Gajdashov","doi":"10.19110/geov.2024.2.1","DOIUrl":"https://doi.org/10.19110/geov.2024.2.1","url":null,"abstract":"Using a complex of mineralogical and geochemical methods, the basal sedimentary horizon (“moraine” sedimentary complex) in Lake Nizhny in East Antarctica was studied. The bulk chemical composition, microelements, rock-forming and accessory minerals, and carbon matter were analyzed. According to all data, the studied sedimentary deposits are volcanogenic in nature, at least partially formed due to explosive products of eruptions of Mount Erebus.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"99 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140659368","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}
The article describes stratiform lead-zinc and polymetallic deposits in Paleozoic sedimentary rocks of the southwestern Tien Shan of the Chatkal-Qurama Mountains using rhythmostratigraphic analysis developed by professor at Tashkent State University V. I. Popov (Popov et al., 1963; Popov, 1980). Tectonic movements play a major role in the formation of new structural elements of the lithosphere and the earth's surface. Large tectonic movements spread over large areas and become regional tectonic rhythms. Considerable phases of tectonic movements were divided into smaller phases. We observed the change in formational composition: the boundary and beginning of the rhythm series were dominated by clastic facies of mobile shallow water (surf-clastic), closer to the beltv — quiet-water or stagnant (Popov et al., 1963; Popov, 1980). We stadied the northwestern slopes of the Qurama ridge in the upper reaches of the Karakiya River. Lithological-facies sections and maps of actual materials were made in the study areas. Early Silurian sediments of the were formed in the conditions of a quiet-water (central-sedimentary) shallow-water basin, zones under the influence of bottom currents (bottom current) and deltaic (underwater deltaic) facies belt; Devonian-Lower Carboniferous sediments were accumulated in wave surf zone, bay (shallow-flood belt) and underwater delta (underwater delta belt). Three ore-bearing units with high contents of gold, copper, lead, zinc and a number of other metals were identified in the Lower Silurian terrigenous formations. Black dolomites of the stagnant zone of a shallow-water bay (shallow-bay facies) with high contents of lead were identified in the Devonian sedimentary formations. The confinement of increased concentrations of polymetals to certain layers and units of sedimentary dolomite rocks enriched in organic matter indicates that the accumulation of dispersed ore matter is syngenetic to the sedimentation process.
文章采用塔什干国立大学教授 V. I. Popov（Popov 等人，1963 年；Popov，1980 年）开发的节律地层学分析方法，描述了恰特卡尔-库拉玛山西南天山古生代沉积岩中的层状铅锌矿和多金属矿床。构造运动在岩石圈和地球表面新构造元素的形成过程中发挥着重要作用。大型构造运动遍及大片地区，成为区域构造运动的节奏。相当大的构造运动阶段被划分为较小的阶段。我们观察到了构造组成的变化：节奏系列的边界和起始阶段以流动浅水（冲浪-碎屑岩）的碎屑岩层为主，而在靠近带v的地方--静水或死水（Popov 等人，1963 年；Popov，1980 年）。我们在卡拉奇亚河上游的古拉玛山脊西北坡进行了勘探。在研究区域绘制了岩性剖面图和实际材料图。早志留纪沉积物形成于静水（中央沉积）浅水盆地、底流影响区（底流）和三角洲（水下三角洲）面带；泥盆纪-下石炭纪沉积物堆积于波浪冲积区、海湾（浅洪水带）和水下三角洲（水下三角洲带）。在下志留纪地层中发现了三个含矿单元，金、铜、铅、锌和其他一些金属含量较高。在泥盆纪沉积地层中发现了浅水湾停滞带（浅水湾面）的黑色白云岩，铅含量较高。在富含有机物的沉积白云岩的某些层和单元中，多金属的浓度增加，这表明分散矿物质的积累是沉积过程的协同作用。
{"title":"Conditions for the formation of ore-bearing Lower-Middle Paleozoic sedimentary formations of the Chatkal-Qurama Mountains of Uzbekistan","authors":"M. Munduzova","doi":"10.19110/geov.2024.2.2","DOIUrl":"https://doi.org/10.19110/geov.2024.2.2","url":null,"abstract":"The article describes stratiform lead-zinc and polymetallic deposits in Paleozoic sedimentary rocks of the southwestern Tien Shan of the Chatkal-Qurama Mountains using rhythmostratigraphic analysis developed by professor at Tashkent State University V. I. Popov (Popov et al., 1963; Popov, 1980). Tectonic movements play a major role in the formation of new structural elements of the lithosphere and the earth's surface. Large tectonic movements spread over large areas and become regional tectonic rhythms. Considerable phases of tectonic movements were divided into smaller phases. We observed the change in formational composition: the boundary and beginning of the rhythm series were dominated by clastic facies of mobile shallow water (surf-clastic), closer to the beltv — quiet-water or stagnant (Popov et al., 1963; Popov, 1980). We stadied the northwestern slopes of the Qurama ridge in the upper reaches of the Karakiya River. Lithological-facies sections and maps of actual materials were made in the study areas. Early Silurian sediments of the were formed in the conditions of a quiet-water (central-sedimentary) shallow-water basin, zones under the influence of bottom currents (bottom current) and deltaic (underwater deltaic) facies belt; Devonian-Lower Carboniferous sediments were accumulated in wave surf zone, bay (shallow-flood belt) and underwater delta (underwater delta belt). \u0000Three ore-bearing units with high contents of gold, copper, lead, zinc and a number of other metals were identified in the Lower Silurian terrigenous formations. Black dolomites of the stagnant zone of a shallow-water bay (shallow-bay facies) with high contents of lead were identified in the Devonian sedimentary formations. The confinement of increased concentrations of polymetals to certain layers and units of sedimentary dolomite rocks enriched in organic matter indicates that the accumulation of dispersed ore matter is syngenetic to the sedimentation process.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"58 39","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140661787","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}
The article is devoted to the history of the discovery of coal deposits in connection with the 100th anniversary of the Pechora coal basin. The stages of geological research are shown from individual finds of coal and references in scientific publications. Attention is paid to the importance of the expedition led by A. A. Chernov in 1924. The most important results of the scientific work by A. A. Chernov are covered, and excerpts from his field diaries are given. The issues of scientific substantiation of the Pechora coal basin are considered.
文章结合佩乔拉（Pechora）煤盆地 100 周年纪念，专门介绍了发现煤矿的历史。从个别煤炭发现和科学出版物的参考文献中展示了地质研究的各个阶段。1924 年由 A. A. 切尔诺夫率领的考察队的重要性受到了关注。介绍了 A. A. 切尔诺夫最重要的科研成果，并摘录了他的野外日记。对佩乔拉煤盆地的科学论证问题进行了探讨。
{"title":"From the find of coal pebbles to the discovery of deposits (the 100th anniversary of the Pechora coal basin)","authors":"I. Astakhova","doi":"10.19110/geov.2024.2.4","DOIUrl":"https://doi.org/10.19110/geov.2024.2.4","url":null,"abstract":"The article is devoted to the history of the discovery of coal deposits in connection with the 100th anniversary of the Pechora coal basin. The stages of geological research are shown from individual finds of coal and references in scientific publications. Attention is paid to the importance of the expedition led by A. A. Chernov in 1924. The most important results of the scientific work by A. A. Chernov are covered, and excerpts from his field diaries are given. The issues of scientific substantiation of the Pechora coal basin are considered.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140660379","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}
S. Onishchenko, N. Sokerina, Sergey Kuznetsov, S. Isaenko, E. Tropnikov
The gold-palladium mineralization of the Chudnoe deposit is represented by mineralized veined zones in fractured and brecciated rhyolites of the Riphean-Vendian age. Native gold and palladium minerals are concentrated mainly in veins of Cr-containing muscovite (fuchsite), in which allanite is present in small amounts; quartz, albite, calcite, potassium feldspar, titanite, apatite, zincochromite and other minerals are also found. Veins of allanite-albite-quartz composition are found in ore zones, in some cases containing abundant fuchsite secretions. It has been established that quartz-albite-allanite-fuchsite and other fuchsite-containing veins are the result of the superposition of quartz-albite vein execution on previously formed gold-bearing fuchsite veins. Quartz-albite vein material fills central parts of the combined veins and cements fragments (xenoliths) of fuchsite, while in some cases part of the gold was redeposited and fixed in the quartz-albite part of the veins. Based on the study of the decomposition structures of solid solutions in native gold, it was previously established that the temperature of gold formation in fuchsite veinlets exceeded 220 °C. The deposition temperature of the main part of the quartz-albite veins was noticeably lower. The homogenization temperature of fluid inclusions in vein minerals (quartz, albite, allanite, calcite) was mainly in the range of 96—168 °C, solutions were enriched with magnesium and calcium chlorides. Under these conditions, allanite, apatite, monazite, xenotime, and molibdosheelite were formed and redeposited, and fuchsite recrystallized.
{"title":"Stages of formation of quartz-albite-allanite-fuchsite veins at the Chudnoe Au-Pd deposit (Subpolar Urals)","authors":"S. Onishchenko, N. Sokerina, Sergey Kuznetsov, S. Isaenko, E. Tropnikov","doi":"10.19110/geov.2024.1.1","DOIUrl":"https://doi.org/10.19110/geov.2024.1.1","url":null,"abstract":"The gold-palladium mineralization of the Chudnoe deposit is represented by mineralized veined zones in fractured and brecciated rhyolites of the Riphean-Vendian age. Native gold and palladium minerals are concentrated mainly in veins of Cr-containing muscovite (fuchsite), in which allanite is present in small amounts; quartz, albite, calcite, potassium feldspar, titanite, apatite, zincochromite and other minerals are also found. Veins of allanite-albite-quartz composition are found in ore zones, in some cases containing abundant fuchsite secretions. It has been established that quartz-albite-allanite-fuchsite and other fuchsite-containing veins are the result of the superposition of quartz-albite vein execution on previously formed gold-bearing fuchsite veins. Quartz-albite vein material fills central parts of the combined veins and cements fragments (xenoliths) of fuchsite, while in some cases part of the gold was redeposited and fixed in the quartz-albite part of the veins. Based on the study of the decomposition structures of solid solutions in native gold, it was previously established that the temperature of gold formation in fuchsite veinlets exceeded 220 °C. The deposition temperature of the main part of the quartz-albite veins was noticeably lower. The homogenization temperature of fluid inclusions in vein minerals (quartz, albite, allanite, calcite) was mainly in the range of 96—168 °C, solutions were enriched with magnesium and calcium chlorides. Under these conditions, allanite, apatite, monazite, xenotime, and molibdosheelite were formed and redeposited, and fuchsite recrystallized.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"132 28","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140669168","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}
The features of the chemical composition of fresh groundwater of the Middle Jurassic aquifer complex in the southern regions of the Komi Republic, which is the main source of drinking water supply, are shown. Groundwater is mainly confined to the sole, composed of quartz sands, of the Sysol formation of the Middle Jurassic (J2ss) and is distributed at depths from 13.7 to 119 m. The waters are confined to the zone of active water exchange, to the areas of infiltration of atmospheric precipitation in the territory with a humid climate. The waters have a bicarbonate-calcium composition, a near-neutral medium, mineralization up to 0.58 g/dm3 and after preliminary water treatment (degreasing, demanganation) can be used for drinking purposes. Based on the conducted geochemical studies and statistical data processing, the main patterns of the distribution of macro- and micro–components in the groundwater of the Middle Jurassic sediments have been established, the leading processes of formation of the main components of the chemical composition of groundwater — oxidation, hydrolysis, cation exchange and sulfate reduction — have been identified.
{"title":"Groundwater of Middle Jurassic deposits of the southern regions of the Komi Republic","authors":"Yuliya A. Koksharova, O. Amosova","doi":"10.19110/geov.2024.1.3","DOIUrl":"https://doi.org/10.19110/geov.2024.1.3","url":null,"abstract":"The features of the chemical composition of fresh groundwater of the Middle Jurassic aquifer complex in the southern regions of the Komi Republic, which is the main source of drinking water supply, are shown. Groundwater is mainly confined to the sole, composed of quartz sands, of the Sysol formation of the Middle Jurassic (J2ss) and is distributed at depths from 13.7 to 119 m. The waters are confined to the zone of active water exchange, to the areas of infiltration of atmospheric precipitation in the territory with a humid climate. The waters have a bicarbonate-calcium composition, a near-neutral medium, mineralization up to 0.58 g/dm3 and after preliminary water treatment (degreasing, demanganation) can be used for drinking purposes. Based on the conducted geochemical studies and statistical data processing, the main patterns of the distribution of macro- and micro–components in the groundwater of the Middle Jurassic sediments have been established, the leading processes of formation of the main components of the chemical composition of groundwater — oxidation, hydrolysis, cation exchange and sulfate reduction — have been identified.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"8 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140666722","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}
N. Noskova, F. Verkholantsev, Vladimir Asming, Natalia Vaganova, I. Popov
In 2023, regional seismic stations recorded 25 seismic events in the Vorkuta coal industrial district of the Komi Republic, with a local magnitude ML from 1.8 to 2.8. A significant contribution to the detection of weak, ML ≤ 2, events was made by data obtained from the temporary seismic station of the IG FRC Komi SC UB RAS, installed as part of expeditionary work in the summer of 2023 in the Polar Urals. Among them the seismic event on August 1, 2023, which had a macroseismic effect, is of particular interest. Residents of several districts of Vorkuta felt tremors similar to an earthquake. Seismic records from 5 stations with epicentral distances from 40 to 1070 km were processed. The following parameters of the epicenter were obtained: t0 = 18:39:07, 67.529N, 64.001E, h = 0 km, Rminor = 3.9 km, Rmajor = 6.7 km, AzMajor = 90°, Kp = 9.0, ML = 2.8, Ms = 2.35. The instrumental epicenter of the event is located in Vorkuta, near the mine field of the Vorkuta mine. We classified the seismic event as a rock burst. Macroseismic intensity calculated in accordance with the Seismic intensity scale-2017 using 57 questionnaires and 163 definitions of sensor categories was I0 = 4.73 ± 0.02. The calculated value of the macroseismic depth of the source was H = 0.5 ± 0.4 km, which corresponds to the instrumental definition and to the range of depths of mine workings of the Vorkuta coal deposit.
2023 年，地区地震台在科米共和国沃尔库塔煤炭工业区记录了 25 次地震事件，当地震级 ML 为 1.8 至 2.8。IG FRC Komi SC UB RAS 在 2023 年夏季极地乌拉尔的考察工作中安装了临时地震台，该地震台获得的数据对探测到 ML ≤ 2 的弱地震事件做出了重大贡献。其中，2023 年 8 月 1 日发生的具有宏观地震效应的地震事件尤其引人关注。沃尔库塔几个区的居民感受到了类似地震的震感。对震中距离为 40 至 1070 千米的 5 个地震站的地震记录进行了处理。震中参数如下：t0 = 18:39:07, 67.529N, 64.001E, h = 0 km, Rminor = 3.9 km, Rmajor = 6.7 km, AzMajor = 90°, Kp = 9.0, ML = 2.8, Ms = 2.35。该事件的仪器震中位于沃尔库塔（Vorkuta），靠近沃尔库塔矿的矿场。我们将该地震事件归类为岩爆。根据地震烈度表-2017，使用 57 份调查问卷和 163 个传感器类别定义计算出的宏观地震烈度为 I0 = 4.73 ± 0.02。震源宏震深度的计算值为 H = 0.5 ± 0.4 km，符合仪器定义和沃尔库塔煤矿工作面的深度范围。
{"title":"Seismic events in the Vorkuta coal industrial district in 2023","authors":"N. Noskova, F. Verkholantsev, Vladimir Asming, Natalia Vaganova, I. Popov","doi":"10.19110/geov.2024.1.4","DOIUrl":"https://doi.org/10.19110/geov.2024.1.4","url":null,"abstract":"In 2023, regional seismic stations recorded 25 seismic events in the Vorkuta coal industrial district of the Komi Republic, with a local magnitude ML from 1.8 to 2.8. A significant contribution to the detection of weak, ML ≤ 2, events was made by data obtained from the temporary seismic station of the IG FRC Komi SC UB RAS, installed as part of expeditionary work in the summer of 2023 in the Polar Urals. \u0000Among them the seismic event on August 1, 2023, which had a macroseismic effect, is of particular interest. Residents of several districts of Vorkuta felt tremors similar to an earthquake. Seismic records from 5 stations with epicentral distances from 40 to 1070 km were processed. The following parameters of the epicenter were obtained: t0 = 18:39:07, 67.529N, 64.001E, h = 0 km, Rminor = 3.9 km, Rmajor = 6.7 km, AzMajor = 90°, Kp = 9.0, ML = 2.8, Ms = 2.35. The instrumental epicenter of the event is located in Vorkuta, near the mine field of the Vorkuta mine. We classified the seismic event as a rock burst. Macroseismic intensity calculated in accordance with the Seismic intensity scale-2017 using 57 questionnaires and 163 definitions of sensor categories was I0 = 4.73 ± 0.02. The calculated value of the macroseismic depth of the source was H = 0.5 ± 0.4 km, which corresponds to the instrumental definition and to the range of depths of mine workings of the Vorkuta coal deposit.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"58 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140666898","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}
The geological structure of Neopleistocene deposits was specified along a 19-kilometer section of the right bank of the lower Pechora between the villages of Garevo and Sergeevo-Shchelya. The presence of three glacial and two interglacial horizons was revealed in coastal outcrops, and the material composition of the composing sediments was studied. The formation of the most ancient moraine horizon was associated with Fennoscandinavia and occurred in the early Quaternary Pomusov (Oka) time. The Pomusov moraine was overlain by Chirva (Likhvin) interglacial alluvial and lacustrine sediments. In the Middle Neopleistocene glacial complex, two morainic strata of different ages were distinguished: Pechora (Dnieper) and Vychegda (Moscovian), separated by a pack of predominantly coastal-marine littoral sediments, and alluvial and lacustrine sediments, the age of which was determined as Rodionov (Shklov) by the palynological method. Differences in the lithological composition of moraines confirmed a double glaciation of the European North-East of Russia in the Middle Neopleistocene.
{"title":"Geological structure of Quaternary sediments in the lower Pechora river valley","authors":"L. Andreicheva","doi":"10.19110/geov.2024.1.2","DOIUrl":"https://doi.org/10.19110/geov.2024.1.2","url":null,"abstract":"The geological structure of Neopleistocene deposits was specified along a 19-kilometer section of the right bank of the lower Pechora between the villages of Garevo and Sergeevo-Shchelya. The presence of three glacial and two interglacial horizons was revealed in coastal outcrops, and the material composition of the composing sediments was studied. The formation of the most ancient moraine horizon was associated with Fennoscandinavia and occurred in the early Quaternary Pomusov (Oka) time. The Pomusov moraine was overlain by Chirva (Likhvin) interglacial alluvial and lacustrine sediments. In the Middle Neopleistocene glacial complex, two morainic strata of different ages were distinguished: Pechora (Dnieper) and Vychegda (Moscovian), separated by a pack of predominantly coastal-marine littoral sediments, and alluvial and lacustrine sediments, the age of which was determined as Rodionov (Shklov) by the palynological method. Differences in the lithological composition of moraines confirmed a double glaciation of the European North-East of Russia in the Middle Neopleistocene.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"56 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140668081","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}
The article is timed to the 130th anniversary of the birth of the outstanding Russian philosopher A. F. Losev (1893—1988) and the 100th anniversary of his work «The Philosophy of Name». Against the background of his ideas, the article considers the nomenclature of polyhedral crystalline simple forms, developed by the scientific school of the «Fedorov Institute» under the leadership of A. K. Boldyrev in the walls of the Leningrad Mining Institute. A general algorithmic approach to the nomenclature of convex polyhedra, convenient for computer data processing, is proposed. It opens an extensive research programme on the frontier of combinatorial theory of convex polyhedra, linear algebra and number theory. The aim of the article is to improve the teaching of crystallography in Russian universities and to broaden the outlook of students in related fields of knowledge.
这篇文章适逢俄罗斯杰出哲学家 A. F. 洛谢夫（1893-1988 年）诞辰 130 周年和其著作《名称哲 学》问世 100 周年。文章以他的思想为背景，探讨了 "费多罗夫研究所 "科学流派在 A. K. Boldyrev 的领导下在列宁格勒矿业学院围墙内开发的多面体晶体简单形式命名法。提出了一种便于计算机数据处理的凸多面体命名通用算法。它开启了凸多面体组合理论、线性代数和数论前沿的广泛研究计划。文章旨在改善俄罗斯大学的晶体学教学，拓宽学生在相关知识领域的视野。
{"title":"From teaching experience. XIII. Name of crystal polyhedron. On the occasion of the 130th anniversary of A. F. Losev's birth and the 100th anniversary of the «Philosophy of the Name»","authors":"Yuriy Voytehovskiy","doi":"10.19110/geov.2024.1.5","DOIUrl":"https://doi.org/10.19110/geov.2024.1.5","url":null,"abstract":"The article is timed to the 130th anniversary of the birth of the outstanding Russian philosopher A. F. Losev (1893—1988) and the 100th anniversary of his work «The Philosophy of Name». Against the background of his ideas, the article considers the nomenclature of polyhedral crystalline simple forms, developed by the scientific school of the «Fedorov Institute» under the leadership of A. K. Boldyrev in the walls of the Leningrad Mining Institute. A general algorithmic approach to the nomenclature of convex polyhedra, convenient for computer data processing, is proposed. It opens an extensive research programme on the frontier of combinatorial theory of convex polyhedra, linear algebra and number theory. The aim of the article is to improve the teaching of crystallography in Russian universities and to broaden the outlook of students in related fields of knowledge.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"46 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140666417","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}
We carried out the analytical oxidation of kerogen samples from oil shales of Ordovician kukersite from the Baltic region, Domanik shales from Timan-Pechora and Upper Jurassic oil shales of the Kashpir deposit by potassium permanganate in an alkaline medium. We performed a single-stage oxidation with 3.5 % solution of potassium permanganate, followed by analysis of trimethylsilyl derivatives of carboxylic acids using chromatography-mass spectrometry, and multi-stage oxidation by 0.5 % solution of potassium permanganate and analysis of oxidation products using IR spectroscopy. Some n-alkyl structures are peripherally associated with the kerogen matrix in the kerogen of Domanik and Jurassic shales, while in the structure of kukersite kerogen, n-alkyl structures are mainly connecting links for larger fragments. Milder, in case of a multi-stage process, oxidation results in formation of large fragments of kerogen, generally repeating its carbon structure, but more oxidized.
{"title":"Oxidation of oil shale kerogen by alkaline potassium permanganate","authors":"N. Burdelnaya, Ya. Sennikova, Dmitry Bushnev","doi":"10.19110/geov.2023.12.6","DOIUrl":"https://doi.org/10.19110/geov.2023.12.6","url":null,"abstract":"We carried out the analytical oxidation of kerogen samples from oil shales of Ordovician kukersite from the Baltic region, Domanik shales from Timan-Pechora and Upper Jurassic oil shales of the Kashpir deposit by potassium permanganate in an alkaline medium. We performed a single-stage oxidation with 3.5 % solution of potassium permanganate, followed by analysis of trimethylsilyl derivatives of carboxylic acids using chromatography-mass spectrometry, and multi-stage oxidation by 0.5 % solution of potassium permanganate and analysis of oxidation products using IR spectroscopy. Some n-alkyl structures are peripherally associated with the kerogen matrix in the kerogen of Domanik and Jurassic shales, while in the structure of kukersite kerogen, n-alkyl structures are mainly connecting links for larger fragments. Milder, in case of a multi-stage process, oxidation results in formation of large fragments of kerogen, generally repeating its carbon structure, but more oxidized.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"15 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140442983","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}
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