Geologija最新文献_第3页

Transverse Dinaric zone of increased compression between the Kraški rob and Hrušica Regions, NE Microadria 东北微adria的Kraški rob和Hrušica区域之间的横向Dinaric区压缩增加

Geologija Pub Date : 2023-08-04 DOI: 10.5474/geologija.2023.001

L. Placer, I. Rižnar, Ana Novak

{"title":"Transverse Dinaric zone of increased compression between the Kraški rob and Hrušica Regions, NE Microadria","authors":"L. Placer, I. Rižnar, Ana Novak","doi":"10.5474/geologija.2023.001","DOIUrl":"https://doi.org/10.5474/geologija.2023.001","url":null,"abstract":"The Kvarner fault divides the Microadria (Adria microplate, the Adria stable core) into the Po and Adria segments. The Istra block, which is sandwiched between the right-lateral Kvarner Fault and the left-lateral Sistiana Fault lies at the extreme eastern edge of the Po segment. Both faults run transversely to the Dinarides and reach their thrust boundary in the east. The Microadria has been moving towards the Dinarides since the Middle Miocene. The movement of the Istra block is exposed in relation to the neighbouring blocks, so an extensive pushed area (the Istra Pushed Area) was formed in the External Dinarides, which is bent towards the northeast. It is defined by two flexural zones, one lying in the extension of the Sistiana Fault and the other in the extension of the Kvarner Fault. The structure of the Dinaric thrust border on the north-eastern side of the Istra block is complex. Its prominent structural element is the Črni Kal Anomaly, due to which a zone of increased compression developed within the Istra Pushed Area and transversely to the Dinarides (Kraški rob – Hrušica Traverse), which lies between the Sistiana and Kvarner Flexural Zones. In terms of kinematics, it differs greatly from these two, and various geomorphologically responsive deformations have occurred within it. Mt. Vremščica (1027 m), which represents a transpressive anticline within the wider zone of the Raša Fault is the most prominent. In order to understand the genesis of the Classical Karst relief, it is important to know that the Mt. Vremščica ridge rose from the levelled karst surface.","PeriodicalId":12743,"journal":{"name":"Geologija","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42634976","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}

引用次数: 0

Geological-genetic structure of Irpin city, the role of lithological factors during engineering-geological zoning and construction assessment Irpin市地质成因构造、岩性因素在工程地质区划和建设评价中的作用

Geologija Pub Date : 2023-08-04 DOI: 10.5474/geologija.2023.007

Pavlo Zhyrnov, Iryna Solomakha

{"title":"Geological-genetic structure of Irpin city, the role of lithological factors during engineering-geological zoning and construction assessment","authors":"Pavlo Zhyrnov, Iryna Solomakha","doi":"10.5474/geologija.2023.007","DOIUrl":"https://doi.org/10.5474/geologija.2023.007","url":null,"abstract":"The scheme of engineering-construction assessment created based on engineering-geological zoning of the city’s territory is desirable among additional graphic materials in the design of master plans projects as determined by building regulations. Engineering-geological zoning provides for different ranks’ selection of engineering-geological units (EG units), which have a particular range of common engineering-geological conditions that ultimately determine the construction sites’ affiliation to a specific suitability category. Geological-genetic structure of Irpin city of Kyiv region (Ukraine) is explored in this article. A variant of the creation of a large-scale engineering-geological map and corresponding geological-lithological sections by supporting boreholes in the borders of the city based on the engineering-geological survey conducted is presented. The obtained result allowed the selection of engineering geological zoning units – engineering geological districts by general conditions of geological development and subdistricts by engineering-geological complexes of Quaternary rocks’ thickness. The analysis of soils’ geomechanical properties (engineering-geological elements) lays the foundations for the selection of engineering-geological sites based on the comparison of this information with geomorphological, hydrogeological and geodynamic data. Accounting of geological-lithological factors in the preparation of the construction assessment scheme in the project of Irpin city’s master plan has become the ultimate result.","PeriodicalId":12743,"journal":{"name":"Geologija","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46398500","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}

引用次数: 0

Overview of the thermal properties of rocks and sediments in Slovenia 斯洛文尼亚岩石和沉积物的热性质概述

Geologija Pub Date : 2023-08-04 DOI: 10.5474/geologija.2023.005

D. Rajver, Simona Adrinek

{"title":"Overview of the thermal properties of rocks and sediments in Slovenia","authors":"D. Rajver, Simona Adrinek","doi":"10.5474/geologija.2023.005","DOIUrl":"https://doi.org/10.5474/geologija.2023.005","url":null,"abstract":"The use of geothermal energy, which comes from both deep geothermal systems and the shallow underground, has been developing rapidly in the last few decades. The purpose of the paper is to present the results of measurements of the thermal properties of all rock samples and sediments that were available from boreholes, two tunnels and numerous surface locations in Slovenia in the period from 1982 to the end of 2022. In relation to the shallow geothermal potential, a special effort is needed to characterize the thermal properties of the rocks and sediments and to implement thermal energy transfer technology. In this sense, knowledge of the thermal conductivity of rocks and sediments is required to assess the possibility of low-enthalpy heat exchange in a given local area. The largest number of measurements was taken to determine thermal conductivity. Determinations of thermal diffusivity were carried out on a much smaller number of rock and sediment samples, as well as determinations of radiogenic heat production in rocks. The results of thermal conductivity measurements on 430 samples from 119 wells, 20 samples from two tunnels and 156 samples from surface locations are shown. The highest thermal conductivities are shown by samples of dolomite, quartz conglomerate and conglomerate, phyllonite, quartz phyllite and gneiss, while the lowest are measured in sediments such as clay, lignite with clay, peat and dry sand. The determined radioactive heat generation is the lowest for milonitized dolomite and highest for dark grey sandstone with shale clasts. Our results are comparable to those already published worldwide, and they could be the basis for the possible future Slovenian standard for the thermal properties of measured rocks and sediments.","PeriodicalId":12743,"journal":{"name":"Geologija","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47340863","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}

引用次数: 0

Lower Permian (Artinskian) chondrichthyan tooth remains (Petalodontidae) from Dovje (Karavanke Mts., NW Slovenia) 下二叠世(Artinskian)软骨鱼牙齿(Petalodontidae)来自斯洛文尼亚西北部的Dovje (Karavanke mt .)

Geologija Pub Date : 2022-12-21 DOI: 10.5474/geologija.2022.012

M. Križnar

{"title":"Lower Permian (Artinskian) chondrichthyan tooth remains (Petalodontidae) from Dovje (Karavanke Mts., NW Slovenia)","authors":"M. Križnar","doi":"10.5474/geologija.2022.012","DOIUrl":"https://doi.org/10.5474/geologija.2022.012","url":null,"abstract":"Fossil remains of chondrichthyan tooth bases (roots) were found in Lower Permian beds exposed along the forest road between Dovje and Plavški Rovt. These layers are part of the clastic development of the Trogkofel Group beds. They are composed of an alternation of dark to light-grey shales, siltstone, and sandstone with rare beds of the conglomerate. Within the clastic succession, layers or lenses of dark-grey to black limestones (biosparitic, biomicritic and oolitic) and limestone breccias occur. The limestone consists remains of algae, fusulinids, brachiopods, and mostly crinoids (Palermocrinus and Entrochus). Detail study has shown that two remains of tooth bases belong to the genus Petalodus, one of them to the species Petalodus ohioensis. The bases are tongue-shaped and come to a rounded point in the distal (base end) edge. On the surface of the base, the typical oval-shaped foramina are visible. In addition, the osteodentine is visible on the cross-section of one specimen. Teeth of Petalodus are often the most common chondrichthyan fossil vertebrate remains reported from the Carboniferous and Permian rocks of the USA, Europe, and Russia. In Slovenia, Petalodus ohioensis has been recorded only from Upper Carboniferous beds. The new record of Lower Permian remains contributes to the knowledge of this cosmopolitan but still common genus of Late Paleozoic chondrichthyans.","PeriodicalId":12743,"journal":{"name":"Geologija","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43781538","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}

引用次数: 0

Statistical approach to interpretation of geochemical data of stream sediment in Pleše mining area Pleše矿区河流沉积物地球化学数据解释的统计方法

Geologija Pub Date : 2022-12-21 DOI: 10.5474/geologija.2022.013

S. Jarc

{"title":"Statistical approach to interpretation of geochemical data of stream sediment in Pleše mining area","authors":"S. Jarc","doi":"10.5474/geologija.2022.013","DOIUrl":"https://doi.org/10.5474/geologija.2022.013","url":null,"abstract":"The Ba, Pb and Zn ore deposit Pleše near Ljubljana is one of the formerly productive mines. The stream sediments were sampled and analysed by XRF to establish the effect of grain size, mineralization, and downstream location of sampling sites on geochemical composition based on various statistical analyses. Statistical analyses of the geochemical data confirm the impact of mineralization. The parametric t-test, non-parametric Mann-Whitney test and cluster analysis showed only minor differences in the geochemical composition of the samples with different grain sizes (< 0.063 mm and 0.063-2 mm). The parametric and non-parametric correlation coefficients as well as cluster analysis indicate that the contents of Si, Al, K, Rb, and Fe are associated with weathered rock forming minerals such as micas, and clay minerals, whereas Nb and Zr are associated with minerals resistant to weathering. Ca and Mg are associated with carbonates. S, Ba, Sr, Pb, Zn, and Mn indicate local mineralization with sulphates and sulphides. The results of the t-test and analysis of variance, Mann-Whitney tests and Kruskal-Wallis ANOVA of the groups established by the cluster analysis confirm that the contents of Ba, Pb and Sr have a statistically significant influence on the classification of the cluster group - i.e., the influence of sediment mineralization. There are no differences in elemental contents in the sediment samples downstream. The statistical approach to evaluate the geochemical data has proven useful and provides a good basis for further interpretation.","PeriodicalId":12743,"journal":{"name":"Geologija","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43394606","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}

引用次数: 0

Uvodnik 翻译

Geologija Pub Date : 2022-12-21 DOI: 10.5474/geologija.2022.000

Branka Bračič Železnik, Nina Rman

引用次数: 0

Depositional environment of the Middle Triassic Strelovec Formation on Mt. Raduha, Kamnik-Savinja Alps, northern Slovenia 斯洛文尼亚北部Kamnik-Savinja阿尔卑斯山脉Raduha山中三叠统Strelovec组沉积环境

Geologija Pub Date : 2022-12-21 DOI: 10.5474/geologija.2022.014

Primož Miklavc, B. Celarc

引用次数: 0

A glimpse of the lost Upper Triassic to Middle Jurassic architecture of the Dinaric Carbonate Platform margin and slope 失落的上三叠统至中侏罗统迪纳拉纪碳酸盐岩台地边缘和斜坡的建筑一瞥

Geologija Pub Date : 2022-12-21 DOI: 10.5474/geologija.2022.011

B. Rožič, L. Gale, P. Oprčkal, Astrid Švara, Tomislav Popit, Lara Kunst, D. Turnšek, T. Kolar-Jurkovšek, A. Šmuc, A. Ivekovič, Jan Udovč, David Gerčar

{"title":"A glimpse of the lost Upper Triassic to Middle Jurassic architecture of the Dinaric Carbonate Platform margin and slope","authors":"B. Rožič, L. Gale, P. Oprčkal, Astrid Švara, Tomislav Popit, Lara Kunst, D. Turnšek, T. Kolar-Jurkovšek, A. Šmuc, A. Ivekovič, Jan Udovč, David Gerčar","doi":"10.5474/geologija.2022.011","DOIUrl":"https://doi.org/10.5474/geologija.2022.011","url":null,"abstract":"In the southernmost outcrops of the Slovenian Basin the Middle Jurassic coarse-grained limestone breccia (mega)beds are interstratified within a succession that is otherwise dominated by hemipelagites and distal turbidites. In this paper, these beds are described as the Ponikve Breccia Member of the Tolmin Formation. We provide descriptions of the studied sections with detailed geological maps and analysis of the breccia lithoclasts. From the latter, a non-outcropping margin of the Dinaric Carbonate Platform is reconstructed. In the Late Triassic the platform margin was characterized by a Dachstein-type marginal reef. After the end-Triassic extinction event, the platform architecture remained, but the reefs were replaced by sand shoals characterized by ooids. In the late Early Jurassic and/or early Middle Jurassic a slope area might have been dissected by normal faults and a step-like paleotopography was formed. In the Bajocian, during a period of major regional geodynamic perturbations, extensional or transtensional tectonic activity intensified and triggered the large-scale collapses of the Dinaric Carbonate Platform margin producing the limestone breccias described herein. This may in turn have caused a backstepping of the platform margin, as is evident from the occurrence of Late Jurassic marginal reefs that are installed directly above the Upper Triassic and Lower Jurassic inner platform successions.","PeriodicalId":12743,"journal":{"name":"Geologija","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44611621","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}

引用次数: 0

Composite landslide in the dynamic alpine conditions: a case study of Urbas landslide 高山动态条件下的复合滑坡——以Urbas滑坡为例

Geologija Pub Date : 2022-12-12 DOI: 10.5474/geologija.2022.010

Ela Segina, Mateja Jemec Auflič, M. Zupan, J. Jež, Tina Peternel

{"title":"Composite landslide in the dynamic alpine conditions: a case study of Urbas landslide","authors":"Ela Segina, Mateja Jemec Auflič, M. Zupan, J. Jež, Tina Peternel","doi":"10.5474/geologija.2022.010","DOIUrl":"https://doi.org/10.5474/geologija.2022.010","url":null,"abstract":"The alpine environment is characterized by complex geology, high-energy terrain, deeply incised river valleys with high erosional potential, extreme weather conditions and dynamic geomorphic processes. Such settings provide favourable conditions for the formation of composite landslides rather than individual slope mass movement phenomena. As an example, we present the kinematics of the composite landslide Urbas in the North of Slovenia which developed in the complex geological and morphological settings characteristic of the alpine environment. The research combines several monitoring techniques and involves the integration of both surface and subsurface displacements measured in the landslide area. The results indicate that the composite sliding process consists of several simultaneous and interrelated types of movements occurring in different segments of the unstable mass that are governed by different mechanisms of displacements, such as rockfall, sliding and debris flow. The kinematic characteristics of a deep-seated landslide that formed in such conditions vary spatially, but is rather homogenuous vertically, indicating translational type of movement. Spatial kinematic heterogeneity is primarily related to the diverse terrain topography, reflecting in different displacement trends. Based on the revealed kinematic proprieties of the sliding material, the sediment discharge illustrates the sliding material balance which estimates the volume of the retaining material that represents the potential for slope mass movement events of larger scales.","PeriodicalId":12743,"journal":{"name":"Geologija","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43851082","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}

引用次数: 0

Prediction of the peak shear strength of the rock joints with artificial neural networks 岩石节理峰值抗剪强度的人工神经网络预测

Geologija Pub Date : 2022-11-18 DOI: 10.5474/geologija.2022.009

Karmen Fifer Bizjak, Rok Vezočnik

{"title":"Prediction of the peak shear strength of the rock joints with artificial neural networks","authors":"Karmen Fifer Bizjak, Rok Vezočnik","doi":"10.5474/geologija.2022.009","DOIUrl":"https://doi.org/10.5474/geologija.2022.009","url":null,"abstract":"With the development of computer technology, artificial neural networks are becoming increasingly useful in the field of engineering geology and geotechnics. With artificial neural networks, the geomechanical properties of rocks or their behaviour could be predicted under different stress conditions. Slope failures or underground excavations in rocks mostly occurred through joints, which are essential for the stability of geotechnical structures. This is why the peak shear strength of a rock joint is the most important parameter for a rock mass stability. Testing of the shear characteristics of joints is often time consuming and suitable specimens for testing are difficult to obtain during the research phase. The roughness of the joint surface, tensile strength and vertical load have a great influence on the peak shear strength of the rock joint. In the presented paper, the surface roughness of joints was measured with a photogrammetric scanner, and the peak shear strength was determined by the Robertson direct shear test. Based on six input characteristics of the rock joints, the artificial neural network, using a backpropagation learning algorithm, successfully learned to predict the peak shear strength of the rock joint. The trained artificial neural network predicted the peak shear strength for similar lithological and geological conditions with average estimation error of 6 %. The results of the calculation with artificial neural networks were compared with the Grasselli experimental model, which showed a higher error in comparison with the artificial neural network model.","PeriodicalId":12743,"journal":{"name":"Geologija","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44328460","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}

引用次数: 0