Visnyk of Taras Shevchenko National University of Kyiv-Geology最新文献

{"title":"COMBINATION OF GEOPHYSICAL TECHNIQUES FOR MAPPING AND MONITORING OF RADIOACTIVE WASTE DISPOSAL FACILITIES","authors":"S. Popov, K. Bondar, R. Khomenko, M. Bondarkov, A. Maksymenko","doi":"10.17721/1728-2713.97.08","DOIUrl":"https://doi.org/10.17721/1728-2713.97.08","url":null,"abstract":"Sites of radioactive waste disposal in Chernobyl exclusion zone still contain significant amounts of fissile materials. At the same time, the information on the amount of radioactive material buried during the accident cannot be called satisfactory. Within the strengthening international safety and environmental requirements, special activities were initiated to survey the radioactive waste disposals created during the liquidation of the accident at the Chernobyl nuclear power plant. The work involved the following combination of non-invasive geophysical methods: 1) high-resolution magnetometry; 2) ground penetrating radar (GPR) 3) direct current electrical resistivity tomography (ERT). Magnetometry provided the detailed map of facilities, and highlighted the sites where containers with fissile substances had been buried. ERT models revealed variations in the resistivity across the disposal site, which is associated with different water content, and may indicate flooding. Ground water level was determined from GPR mesurements. The combined interpretation of geophysical results served a basis for designing the geometric model of the \"Chernobyl 3rd stage\" radioactive waste disposal facility. It was used to determine the places for subsequent applying direct radioactive methods for investigation and monitoring of this disposal site.","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"9 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74609455","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":"RESERVOIR PROPERTIES OF CONSOLIDATED TERRIGENOUS ROCKS OF CAMBRIAN PERIOD OF THE EASTERN SLOPE OF THE LVIV PALEOZOIC DEPRESSION","authors":"S. Vyzhva, V. Onyshchuk, I. Onyshchuk, M. Reva, O. Shabatura","doi":"10.17721/1728-2713.98.04","DOIUrl":"https://doi.org/10.17721/1728-2713.98.04","url":null,"abstract":"The paper concerned the researches of porosity and permeability properties of consolidated terrigenous reservoir rocks of Cambrian period of the Eastern slope of the Lviv depression. The purpose of the research was to study the petrophysical parameters of the consolidated reservoir rocks, as the basis of the integrated analysis of their physical properties. Such reservoir parameters as the open porosity factor and void factor, permeability coefficient and residual water saturation factor have been studied. The article presents the limits of changes and the average values of porosity and permeability properties of rocks, and the classification of their reservoir properties. On the basis of capillarimetric research, an evaluation of the structure of the void space of rocks was made. The correlation analysis has allowed to establish a series of empirical relationships between the reservoir parameters (density, porosity coefficient, effective porosity factor and residual water saturation factor) and, also, to determine correlation dependences between porosity coefficients measured in atmospheric and reservoir conditions. These relationships can be used in the data interpretation of geophysical studies of wells and in the modeling of porosity and permeability properties of consolidated rocks of the Eastern slope of the Lviv depression.","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"34 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75851354","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":"RESERVOIR PROPERTIES OF DEEP-SEATED CONSOLIDATED ROCKS OF CARBONIFEROUS PERIOD OF THE CENTRAL GRABEN OF THE DNIEPER-DONETSK DEPRESSION","authors":"S. Vyzhva, V. Onyshchuk, I. Onyshchuk, M. Reva, O. Shabatura","doi":"10.17721/1728-2713.96.02","DOIUrl":"https://doi.org/10.17721/1728-2713.96.02","url":null,"abstract":"Paper concerns the researches of porosity and permeability properties of deep-seated consolidated rocks (siltstones, poor-porous sandstones) of Carboniferous period of the central graben of the Dnieper-Donetsk depression. The purpose of the research was to study the petrophysical parameters of the consolidated reservoir rocks, as the basis of the integrated analysis of their physical properties. Such reservoir parameters as the open porosity factor and void factor, permeability coefficient and residual water saturation factor have been studied. The article presents the limits of changes and the average values of porosity and permeability properties of rocks, and the classification of their reservoir properties. On the basis of capillarimetric research, an evaluation of the structure of the void space of rocks was made. The correlation analysis has allowed establishing a series of empirical relationships between the reservoir parameters (density, porosity coefficient, effective porosity factor and residual water saturation factor) and, also, determining correlation dependences between porosity coefficients measured in atmospheric and reservoir conditions. These relationships can be used in the data interpretation of geophysical studies of wells and in the modeling of porosity and permeability properties of consolidated rocks of the central graben of the Dnieper-Donetsk depression.","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"85 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84066496","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":"APPLICATION OF POLYNOMIAL CORRECTIONS TO CONSTRUCT AN OPTIMAL ONE-DIMENSIONAL DENSITY MODEL OF THE MANTLE","authors":"L. Shumlianska, P. Pigulevski","doi":"10.17721/1728-2713.97.07","DOIUrl":"https://doi.org/10.17721/1728-2713.97.07","url":null,"abstract":"In this work, an optimal one-dimensional density model was obtained, corresponding to the velocity curve for one of the mantle domain under the Ukrainian shield. When obtaining a one-dimensional density model, only the Earth's mass and seismic velocities are known physical parameters. The density is obtained by solving the Adams-Williamson equation, the use of which is possible under the assumption that the density is created only by the weight of the upper layers, with a homogeneous composition of the mantle. Some approximation to the real density distribution gives a seismic parameter that scales the obtained densities in accordance with the geometry of the seismic velocity distribution, while, as shown by our studies, the obtained density values are not absolute, but only an approximation corresponding to the equation is used. In order to obtain a density distribution we transform the first approximation obtained from the Adams-Williamson equation. This paper shows several options for transformation; based on the arithmetic mean correction for 5 reference mantle models (PEMC, PEMA, PREM, AK135, IASP91); using control points representing seismic boundaries to determine the intervals for computation of density using the Adams-Williamson equation; when introducing corrections in the form of the difference between the polynomials for the theoretical density curve and that obtained by the Adams-Wilmson equation for the IASP91 model. The density curve obtained by the last method is not distorted by the introduced density jumps from the IASP91 model, correspond to positions of seismic boundaries along the inflections of the P-velocity curve. The density curve obtained from the Adams-Williamson equation is transformed into a curve that is as close as possible to the geometry of the inherent curve seismic velocity of P and S waves. In our opinion, the density curve obtained using the difference polynomial shows the most approximate solution to the optimal density model for a given seismic velocity distribution, in our case, for the mantle domain under the Ukrainian shield with center coordinates 28.25Å 49N.","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"45 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83047995","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":"INTEGRATING OF GEOPHYSICAL AND AGROCHEMICAL METHODS FOR SLOPE LANDS STUDYING","authors":"O. Kruglov, O. Menshov, V. Kolada, A. Achasova, O. Andreeva","doi":"10.17721/1728-2713.94.06","DOIUrl":"https://doi.org/10.17721/1728-2713.94.06","url":null,"abstract":"The increasing of the soil degradation of agricultural lands in Ukraine requires the improvement of their survey system. First of all, it is related to the increase of the accuracy of determinations and the density of the measurement grid. To perform these tasks, new methods are involved, primarily the geophysics ones. There are certain advantages of the integration of the studies as well as development of the substantiated rational combination of methods. Recently, promising results of the application of the magnetic susceptibility of soil to characterize the agronomic properties have been obtained. This study shows the results of the integrated application of a number of agrochemical methods and determinations of mass-specific magnetic susceptibility (MS) on the example of podzolized chernozems of Kharkiv district of Kharkiv region. We identified the possibilities of culling of values of soil characteristics from the proceeding of the results of definition of MS. The nature of the correlation between MS and humus content allows us to recommend the replacement of more expensive determination of humus content with cheaper MS. Soil magnetic susceptibility correctly reflects the spatial distribution of the main indicators of eroded lands: the humus content, and physical clay. We propose the study of sloping lands with more optimal techniques of the MS measurement of the soil as the most accessible tool.","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"40 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90222624","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":"PATTERNS OF URANIUM-ORE LOCALIZATION IN THE DONO-DNIPROVSKA POTENTIAL URANIUM-ORE METALLOGENIC PROVINCE IN ASSOCIATION WITH LITHOSPHERE'S DEEP STRUCTURE","authors":"G. Kalashnyk, А. Кuzmin","doi":"10.17721/1728-2713.92.10","DOIUrl":"https://doi.org/10.17721/1728-2713.92.10","url":null,"abstract":"The objective of the study is to identify the main patterns of uranium-ore localization in the Dono-Dniprovska potential uranium-ore province in association with lithosphere's deep structure. The analysis of geophysical, geological, petrological, radiogeochemical information on the features of the formation, placement of uranium occurrences of the different genetic types in the Dnieper-Donets aulacogen in close connection with the features of the deep structure of the lithosphere, asthenosphere, fault tectonics was carried out. The features of the deep structure of the lithosphere and their physical parameters that affect the conditions of intensive uranium ore genesis in the formation of the main geological industrial types of uranium deposits in the research area were revealed. According to analysis of geological materials (uranium bearing, features of sedimentary-volcanogenic and, to a lesser extent, crystalline rocks occurrence, variety of breaking tectonics at various levels of the geological section, groundwater circulation conditions, etc.) the most perspective for discovering of new uranium deposits horizons and strata assigned to uranium-bearing geological formation in this region were identified. Based on a joint analysis of the geological conditions of localization of uranium deposits, ore occurrences and manifestations of uranium mineralization, geological uranium-bearing formations, their prevalence and depth occurrence in the Dnieper-Donets aulacogen, the four most perspective for this region industrial types of uranium deposits have been identified. The practical significance of this research is to increase the efficiency of metallogenic forecasts by expanding the deep factors and regional criteria for uranium ore genesis of various genetic types specified to the study area. This makes it possible to reasonably determine the prospects of the territories for the possibility of forming uranium industrial ore concentration with the allocation of areas of their most probable localization.","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"207 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73546195","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":"SPECIFICITIES OF THE CREATION OF GEOINFORMATION MAINTENANCE OF THE TERRITORY OF CHORNOBYL RADIATION AND ECOLOGICAL BIOSPHERE RESERVEFOR GEOINFORMATION MONITORING CONDUCTION","authors":"N. Lazorenko-Hevel, I. Galius, V. Zatserkovnyi, B. Denysiuk, N. Shudra","doi":"10.17721/1728-2713.93.12","DOIUrl":"https://doi.org/10.17721/1728-2713.93.12","url":null,"abstract":"The state and prospects of application of geoinformation systems (GIS) to solve monitoring tasks of nature protected territories of Ukraine are investigated. The results of the first in Ukraine project of geoinformation support of the territory of the Chornobyl Radiation and Ecological Biosphere Reserve (CBR) for monitoring conduction is introduced; it is based on a geospatial database (SDB) of the reserve, which was created using an featureoriented approach based on national standards of Ukraine DSTU 8774:2018 \"Geographical information. Rules for geospatial data modeling\" and DSTU ISO 19110: 2017 \"Geographic information – Methodology for feature cataloging\". An information and reference geoportal of the territory and facilities of the Chornobyl Radiation and Ecological Biosphere Reserve has been created, which makes it possible to provide public access to the current monitoring information of the CBR based on the ArcGISOnline platform to a wide range of users. The use of the developed specialized algorithms of geoinformation analysis and modeling for monitoring of a radiation pollution condition of CBR is offered. Peculiarities of geoinformation support of the Chornobyl Radiation and Ecological Biosphere Reserve for GIS monitoring are as follows: keeping up-to-date and unifying different types and origins of data on a single digital topographic basis, ensuring the required level of interaction between different local government authorities, other enterprises and institutions which ensure the viability of the reserve. Problems solved with the help of GIS CBR: creation and maintenance of up-to-date of the spatial data such as: (boundaries of the reserve, current state of use of the territory, natural landscapes, vegetation, distribution of rare and endangered species of flora, fauna, plant communities, functional zoning, afforestation of the reserve; location of historical, cultural and recreational areas features, ecological trails and tourist routes; fire-fighting landscaping, project plan); planning of nature reserve territory; organization of economically, socially and ecologically effective management of the reserve; development of measures for environmental monitoring; monitoring of the state of radiation pollution of the reserve territory; making management decisions, issuing data on hard media; design of tourist routes; designing possible consequences of catastrophes; providing geoinformation support during forest fire fighting; development of measures for the implementation of environmental, anti-erosion, landslide and fireworks, restoration of disturbed natural complexes; comprehensive assessment of the territory of the reserve, its economic use and reserves of natural resources, landscape diversity, historical and cultural sites, the state of engineering and transport infrastructure; conducting scientifically substantiated functional zoning of the reserve territory; development of proposals for the construction and reconstruction of","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"53 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79412823","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":"PROSPECTS OF NEWLY DISCOVERED UGUR AREA IN THE NORTHWEST OF THE GEDABEY ORE DISTRICT (LESSER CAUCASUS, AZERBAIJAN)","authors":"N. Imamverdiyev, V. Baba-zadeh, S. Mursalov, A. Valiyev, M. Mansurov, A. Ismayilova","doi":"10.17721/1728-2713.93.06","DOIUrl":"https://doi.org/10.17721/1728-2713.93.06","url":null,"abstract":"The article describes Ugur exploration area located in Gedabey Ore District of the Lesser Caucasus in NW of Azerbaijan. Results of trenches and channels sampling on the surface, RC bore holes and summary of significant drill intercepts (>0.29 ppm Au) of Ugur Exploration area are presented. It has been established that The deposit is enlarged by highly gold-silver result of surface outcrop rock chip samples over an area of 2.5 kms North-South by 2 kms East-West, with the Reza gold deposit located in the central part. Out of metallic minerals crystalline hematite was observed. On surface intensive barite and barite-hematite vein and veinlets, also gossan zones were observed. The main mineralization zones have been sampled in three trenches at a distance up to 270 m by trenches #1, #2 and #3 and received positive results for gold and silver. Also there have taken approximately 550 samples from outcrop #1 and #2. On the main orebody at surface centre there occured secondary quartzites with vein-veinlets barite-hematite mineralization over which there remain accumulations of hydrous ferric oxides cementing breccias of quartz and quartzites. And in erosion parts \"reddish mass\" being oxidation product of stock and stockverk hematite ores were observed. Representing typical gossans, these accumulations by the data of trenches for thickness about 5-10 m contain gold 0.3-2.0 ppm and silver 1.0-15.0 ppm. Ten diamond drill holes, named UGDD 01-10 were drilled in the center part of the deposit. The drill holes were sampled mainly in 1 meter lengths from the top of the hole to the bottom. The core samples were marked and placed into standard boxes. Significant intervals of weighted averages greater than 0.29 ppm over down hole intervals of 1 metres or greater (>0.29 ppm Au and >0.9 m) are summarized in table 3 below. In conclusion, the outcropping alteration at the deposit is typical of the upper steam-heated levels of high-sulfidation epithermal (HSE) deposits, which in most mineralized systems of this type, may cap higher-grade gold mineralization which is hosted by underlying vuggy and oxide zones.","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"51 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76585110","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":"MODELING OF DISPLACEMENT PROCESSES IN HETEROGENEOUS ANISOTROPIC GAS RESERVOIRS","authors":"M. Lubkov, O. Zaharchuk","doi":"10.17721/1728-2713.93.11","DOIUrl":"https://doi.org/10.17721/1728-2713.93.11","url":null,"abstract":"Nowadays there are important problems of increasing efficiency of development and exploitation of gas deposits. There are problems associated with the growth of gas production in heterogeneous anisotropic reservoirs, increasing gas recovery, achieving economic efficiency and so on. In this situation, there are popular methods of computer modeling of gas productive reservoirs, because they allow getting information of the structure and characteristics of the gas reservoir, the distribution parameters of permeability and other important factors in it. They also allow evaluating and calculating uncertainty arising from the lack of information about the gas reservoir properties outside the well. Currently there are many methods of computer modeling, allowing solving various practical problems. From another hand there are some problems related to the accuracy and adequacy of simulation of heterogeneous anisotropic permeable collector systems in real conditions of gas deposits exploitation. On the base of combined finite-element-difference method for solving the nonstationary anisotropic piezoconductivity Lebenson problem, with calculating of heterogeneous distribution of permeable characteristics of the gas reservoir, we carried out modeling of filtration processes between production and injection wells. The results of computer modeling show that intensity of the filtration process between production and injection wells depends essentially on their location both in a shifting-isotropic and anisotropic gas reservoir. Therefore, for the effective using of poorly permeable shifting-isotropic gas-bearing reservoirs, it is necessary to place production and injection wells along the main anisotropy axes of the gas-bearing layers. At the placing production and injection well systems in low-permeable anisotropic reservoirs of a gas field, the most effective exchange between them will take place when the direction of increased permeability of the reservoirs coincides with the direction of the location of the wells. Obviously, the best conditions for gas production processes in any practical case can be achieved due to optimal selection of all anisotropic filtration parameters of the gas reservoir. One can use obtained results for practical geophysical works with a purpose optimizing of gas production activity in low-permeable heterogeneous anisotropic reservoirs. Presented method for more detailed investigation of low-permeable heterogeneous anisotropic gas-bearing deposits can be used.","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"208 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84094818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE EARLIEST INSECT ENDOPHYTIC OVIPOSITION (EARLY PENNSYLVANIAN, EASTERN UKRAINE)","authors":"V. Dernov","doi":"10.17721/1728-2713.95.02","DOIUrl":"https://doi.org/10.17721/1728-2713.95.02","url":null,"abstract":"The world's oldest insect endophytic oviposition from the deposits of the Mospinka Formation (Upper Bashkirian, Lower Pennsylvanian) of the Donets Basin is described in the paper. There is little information on Carboniferous endophytic oviposition of insects. The earliest insect endophytic oviposition specimens are specimens from the Upper Moscovian and the uppermost part of the Gzhelian of Germany, as well as the uppermost Gzhelian of France and the USA. The endophytic oviposition described in this article is almost 10 million years older than specimens from the Upper Moscovian of Germany. The studied material was collected on five localities and four stratigraphic levels. The study area is the upper reaches of the Velyka Kamyanka River (southern part of the Luhansk Region, Ukraine). The rocks with the studied oviposition were formed in shallow marine, lagoonal and lacustrine environments. Insect damages were noted on leaves of arborescent lycopsids and cordaitaleans, and pteridosperm rachises. The above mentioned oviposition belongs to the following damage types sensu Labandeira et al., 2007: DT76, DT100, DT101 and DT175. The studied oviposition occurs mainly in sediments formed in the environments of a highly watered coastal alluvialdeltaic lowland with associations of the semi-aquatic sphenopsids (shores of lakes, rivers, and freshened lagoons), predominantly arborescent lycopsids (swampy areas), as well as pteridosperms on the elevated areas of accumulation plain. The most likely producers of endophytic oviposition are representatives of Odonatoptera, Palaeodictyopteroidea, and Orthoptera. The new findings substantially supplement the fossil record of insect endophytic oviposition.","PeriodicalId":42798,"journal":{"name":"Visnyk of Taras Shevchenko National University of Kyiv-Geology","volume":"58 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82697608","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}