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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society最新文献

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New data on the zoisite from the Rila Mountain, Bulgaria 保加利亚里拉山黝帘石的新资料
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.15
Stefka Dencheva, Desislava Racheva, Theodora Biljarska
{"title":"New data on the zoisite from the Rila Mountain, Bulgaria","authors":"Stefka Dencheva, Desislava Racheva, Theodora Biljarska","doi":"10.52215/rev.bgs.2022.83.3.15","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.15","url":null,"abstract":"New data on the composition and structure of zoisite from the area of Dvuglav Peak in the Rila Mountain have been obtained using modern methods and equipment. Chemical analyses data show the presence of different impurities that can replace Ca and Al in the structure of the mineral. The presence of Mn as a chromatophore in thulite is confirmed. The characteristic interplanar distances and Raman shifts for the specimens are recorded and tabulated. They are compared with the already known ones in the literature and databases. Due to the similarity in both the composition and the structure of zoisite and lawsonite, an analogy is also observed in their Raman elastic moduli.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45508200","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
PAHs in medium and high rank Bulgarian coals – insights from aromatic indices 保加利亚中高级煤中的PAHs——从芳香指数看
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.65
D. Apostolova, I. Kostova, A. Bechtel, M. Stefanova
{"title":"PAHs in medium and high rank Bulgarian coals – insights from aromatic indices","authors":"D. Apostolova, I. Kostova, A. Bechtel, M. Stefanova","doi":"10.52215/rev.bgs.2022.83.3.65","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.65","url":null,"abstract":"The study presents analyses of aromatic components in bitumen extracts from Bulgarian medium and high rank coals. Bulk samples from Balkan, Ro = 0.96%, Dobroudzha, Ro = 1.13%, and Svoge, Ro = 5.20% coal-bearing provinces, were considered. After extensive chromatographic separation and GC-MS study of the aromatic fractions, our attention was focused on polycyclic aromatic hydrocarbons (PAHs) compositions. Aromatic indices, based on quantification of individual compounds, revealed that: (i) the highest amounts of PAHs were present in Balkan and Dobroudzha samples, 219–365 μg/g TOC, and dropped to 3.5 μg/g TOC at Svoge sample; (ii) the alkylated naphthalenes and phenantrenes prevalence confirmed published data; (iii) the relationship between aromatic indices vs. Ro, % is in agreement with the previously obtained results, indicating their decrease with thermal maturity. For some indices only weak correlation was obtained, suggesting that PAH concentrations are not solely affected by coal rank, but also by environmental conditions and vegetation.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46434912","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
Some problems with the tectonic subdivision schemes application in field work – an example of the Western Sredna Gora subzone 构造细分方案在野外工作中应用的一些问题——以西Sredna Gora亚带为例
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.135
D. Vangelov, I. Gerdjikov
{"title":"Some problems with the tectonic subdivision schemes application in field work – an example of the Western Sredna Gora subzone","authors":"D. Vangelov, I. Gerdjikov","doi":"10.52215/rev.bgs.2022.83.3.135","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.135","url":null,"abstract":"The tectonic subdivision is a regional method for correlation, very subjective and not always applicable during the field work. Usually, more detailed field investigations do not confirm the regional tectonic schemes, main characteristics of the tectonic units and boundaries. The given example for the Western Srednogorie subzone represents the handicaps of tectonic schemes fields application.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49621239","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: 1
Probable reasons for interruption of the flow of the Iskrets karst spring 中断伊斯克雷茨喀斯特泉流动的可能原因
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.243
A. Benderev, E. Damyanova, M. Ivanov, Yordanka Donkova, P. Gerginov
{"title":"Probable reasons for interruption of the flow of the Iskrets karst spring","authors":"A. Benderev, E. Damyanova, M. Ivanov, Yordanka Donkova, P. Gerginov","doi":"10.52215/rev.bgs.2022.83.3.243","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.243","url":null,"abstract":"The object of research is the Iskrets spring, one of the large and important karst springs in Bulgaria. A characteristic feature of its regime is the temporary interruptions of its outflow. The purpose of the research is to establish the probable causes and mechanism for these interruptions. After analyzing the hydrogeological situation and data from the results of continuous measurements of changes in water quantities, it is assumed that the main cause of this phenomenon is the processes of erosion, transport and deposition of cave alluvial sediments.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43806291","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: 2
The debris flows in the Lozenska Mountain from Subboreal and Subatlantic periods 亚滨海和亚大西洋时期洛岑斯卡山脉的泥石流
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.213
R. Kenderova, Nadezhda Kecheva
{"title":"The debris flows in the Lozenska Mountain from Subboreal and Subatlantic periods","authors":"R. Kenderova, Nadezhda Kecheva","doi":"10.52215/rev.bgs.2022.83.3.213","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.213","url":null,"abstract":"This research was conducted in June 2020 in connection with carrying out rescue archaeological excavations of a site recorded during the construction of the Sofia Ring Road, in the northern foothills of the Lozenska Mountain. On the basis of sedimentological studies of cultural layers, the flow of two mudflows with a southeast-northwest direction were proven at different depths. The discovered archaeological artefacts, mainly fragmented ceramic vessels, help to date these two flows through the Subboreal and the lower Sub-Atlantic. The first, located deeper than the modern surface flow, is dated after the 2nd millennium BC. (i.e., from the Subboreal). The second is the shallower stream, after the Roman era, II–IV centuries AD. (i.e., Sub-Atlantic). Both flowed into the Iskar River. Nowadays. it is difficult to determine their exact location. The archaeological sites from the two streams brought artifacts located in a south/southwest direction, closer to the northern slope of the Lozenska Mountain.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44033232","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
Remote sensing mapping and 3D modelling of Petelovo Au-epithermal system, Panagyurishte ore district, Bulgaria 保加利亚Panagyurishte矿区Petelovo金浅成热液系统遥感制图和三维建模
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.203
Stefan Velev, K. Bogdanov, Ivan Krumov, O. Ognianov, Y. Georgieva
{"title":"Remote sensing mapping and 3D modelling of Petelovo Au-epithermal system, Panagyurishte ore district, Bulgaria","authors":"Stefan Velev, K. Bogdanov, Ivan Krumov, O. Ognianov, Y. Georgieva","doi":"10.52215/rev.bgs.2022.83.3.203","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.203","url":null,"abstract":"Remote sensing drone-based study combined with field mapping, XRD and XRF tests for mineral detection outlined advanced argillic, argillic and propylitic alteration domains within the Petelovo silica cap to demonstrate quick approach for mineral alteration mapping. Mineral alteration modelling by 3D Leapfrog Geo outlined zonal patterns around epithermal high-sulphidation Cu-Au mineralization could be employed as a pathfinder for gold enrichment.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45342968","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
3D integration of orthophoto mapping and Terrestrial Laser Scanning of the ground surface and underground caverns 地面和地下洞穴的正射影像测绘和地面激光扫描的三维集成
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.2.35
I. Ivanov, A. Yanakiev, O. Ognianov, Y. Shopov
{"title":"3D integration of orthophoto mapping and Terrestrial Laser Scanning \u0000of the ground surface and underground caverns","authors":"I. Ivanov, A. Yanakiev, O. Ognianov, Y. Shopov","doi":"10.52215/rev.bgs.2022.83.2.35","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.2.35","url":null,"abstract":"Obtaining three-dimensional data for the surface and underground cavities is a complex task that includes using scanning systems to collect accurate data, as well as their processing. In recent years, Unmanned Aerial Systems (UAS) have been very successfully used for capturing geospatial data for ground surface and orthophoto mapping. On the other hand, the use of UAS for underground scanning is a difficult task due to the limited spaces, the lack of GNSS coverage and the low level of illumination in underground terrains. In this regard, the use of Terrestrial Laser Scanning (TLS) is crucial. This work looks for intersection between these two types of scanning systems (UAS as a system for scanning the earth’s surface and LiDAR as a system for scanning underground surfaces) considered in the context of studying cavities and the ground surface above them as well as the possibilities for integration of data obtained from them.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42140172","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
Assessment of resources of the Varvara thermo-mineral water deposit, Pazardzhik District Pazardzhik区Varvara热矿泉水矿床资源评估
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.287
Tanya Vasileva, V. Petrov
{"title":"Assessment of resources of the Varvara thermo-mineral water deposit, Pazardzhik District","authors":"Tanya Vasileva, V. Petrov","doi":"10.52215/rev.bgs.2022.83.3.287","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.287","url":null,"abstract":"In order to determine the resources of the Varvara thermo-mineral water deposit, a hydrogeological model has been created, determined by the Finite Difference Method (FDM). The model was developed in the mode of stabilized filtration. The Varvara deposit occupies an area of 2.4 km2 in the Pazardzhik District, located in Southern Bulgaria. The collector for those thermo-mineral waters are biotite and amphibole-biotite gneisses. The total water exchange in the system of the Varvara mineral water deposit is 26 l/s (2 260 m3/d). The regional resources of the deposit are 25 l/s (2 171 m3/d). The geothermal resources of the deposit have been estimated to be 4.98 MJ/s.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48000841","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
Academician Vladimir K. Petković (1873–1935) – a brief introduction to the life and work of one of the founders of the Carpathian-Balkan Geological Association (CBGA) 弗拉基米尔·k·佩特科维奇院士(1873-1935)——喀尔巴阡-巴尔干地质协会(CBGA)创始人之一的生平和工作简介
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.329
Aleksandra Maran Stevanović
{"title":"Academician Vladimir K. Petković (1873–1935) – a brief introduction to the life and work of one of the founders of the Carpathian-Balkan Geological Association (CBGA)","authors":"Aleksandra Maran Stevanović","doi":"10.52215/rev.bgs.2022.83.3.329","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.329","url":null,"abstract":"Academician Vladimir K. Petković was one of the founders of the Carpathian-Balkan Geological Association (CBGA) in 1922. The announcement gives a brief information about his professional path and his contributions to the geology of Serbia.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48275238","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
Order of osakaite–namuwite–lahnsteinite formation during alkalization of sulfate solutions 硫酸盐溶液碱化过程中osakaite–namuwite–lahnsteite形成的顺序
IF 0.2
Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.2.51
Z. Delcheva, T. Stanimirova, N. Petrova
{"title":"Order of osakaite–namuwite–lahnsteinite formation during alkalization of sulfate solutions","authors":"Z. Delcheva, T. Stanimirova, N. Petrova","doi":"10.52215/rev.bgs.2022.83.2.51","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.2.51","url":null,"abstract":"Experiments with dropwise alkalization of a 0.1 M ZnSO4 solution with 1M NaOH were carried out to establish the formation order of Zn-hydroxy-sulfate minerals (osakaite, namuwite, and lahnsteinite). During the controlled alkalization with 1M NaOH of a 0.1M ZnSO4 solution, namuwite (osakaite), lahnsteinite and wulfingite are successively formed. The obtained precipitates were characterized by powder X-ray diffraction (XRD) and SEM-EDS methods. The formation conditions and regions of stability of osakaite and namuwite are at near circumneutral pH (6.5–7), while lahnsteinite is stable at high pH (11–12). This explains the wider distribution of namuwite and osakaite in nature. The isomorphic substitution of Zn2+ cation with Cu2+ in the hydroxide layer of the Zn-hydroxy-sulfate minerals during controlled alkalization was studied using mixed 0.1M ZnSO4 + CuSO4 solution (molar ratio Zn:Cu = 4:1 and 1:1). During controlled alkalization of mixed Zn-Cu sulfate solutions, 25% copper cations are isomorphic incorporated in the namuwite (osakaite) and lahnsteinite structures. It was determined that this Cu2+ content is the upper limit of the isomorphism and corresponds to the occupation of 1/3 of octahedral positions.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43340350","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
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