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Review of the Bulgarian Geological Society最新文献

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New data on the Turonian nodular phosphate-bearing bed in the Dobrindol Formation south of Kaspichan, NE Bulgaria 关于保加利亚东北部卡斯皮昌以南多布林多尔地层中图伦纪结核磷酸盐床的新数据
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.201
Millena Vetseva, A. Hikov, D. Dochev, Yavor Stefanov
{"title":"New data on the Turonian nodular phosphate-bearing bed in the Dobrindol Formation south of Kaspichan, NE Bulgaria","authors":"Millena Vetseva, A. Hikov, D. Dochev, Yavor Stefanov","doi":"10.52215/rev.bgs.2023.84.3.201","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.201","url":null,"abstract":"The Turonian nodular phosphate-bearing bed outcropping near Kaspichan consists of early diagenetically mineralized (carbonate-fluorapatite – CFA, glauconite and goethite) limestone lithoclasts (nodules), mineralized macrofauna, and non-mineralized intraclasts, embedded in a glauconite-CFA cement. The characteristics of the nodular bed are consistent with a formation under extremely low net sedimentation rate with nodules demonstrating evidence for reworking. The identified ammonite association assigns late Turonian age of the bed. XRF and LA-ICPMS analyses reveal low P, U, and REE-Y concentrations, with correlations between REE and the other authigenic oxides indicating that glauconite and goethite could be main REE concentrators along with CFA. Fluctuations in the redox conditions are implied by the authigenic mineral association, mineralization stages, presence of diverse fauna and ichnofissils, and applied geochemical proxies.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139193503","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
Dinoflagellate cyst biostratigraphy of the upper Campanian–lower Maastrichtian interval in the Oslen-Krivodol section, Northwest Bulgaria: preliminary results 保加利亚西北部Oslen-Krivodol段上元古代-下元古代间的甲藻囊生物地层学：初步结果
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.189
P. Pavlishina, D. Dochev
{"title":"Dinoflagellate cyst biostratigraphy of the upper Campanian–lower Maastrichtian interval in the Oslen-Krivodol section, Northwest Bulgaria: preliminary results","authors":"P. Pavlishina, D. Dochev","doi":"10.52215/rev.bgs.2023.84.3.189","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.189","url":null,"abstract":"A dinoflagellate cyst biostratigraphy for the upper Campanian–lower Maastrichtian interval in the newly described Oslen-Krivodol section, northwest Bulgaria, is proposed. The dinocyst scheme comprises the zones of Areoligera coronata and Cerodinium diebelii, in ascending order, and illustrates the sharp transition between the Campanian and Maastrichtian dinocyst assemblages. The presented results confirm the high potential of dinoflagellate cysts for biostratigraphic correlations in the Campanian–Maastrichtian boundary interval.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139193871","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
New geological and X-ray diffraction data from sedimentary rocks in the area of Underwater Petrified Forest natural phenomenon, Sozopol Bay, Black Sea 黑海索佐波尔湾水下石化森林自然现象地区沉积岩的新地质和 X 射线衍射数据
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.197
Stefan Velev, D. Dochev, Ralica Sabeva, Lubomir Kenderov, Vesela V. Evtimova, Mihail Iliev, Boyanka Angelova
{"title":"New geological and X-ray diffraction data from sedimentary rocks in the area of Underwater Petrified Forest natural phenomenon, Sozopol Bay, Black Sea","authors":"Stefan Velev, D. Dochev, Ralica Sabeva, Lubomir Kenderov, Vesela V. Evtimova, Mihail Iliev, Boyanka Angelova","doi":"10.52215/rev.bgs.2023.84.3.197","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.197","url":null,"abstract":"The current study is part of a comprehensive investigation of the natural phenomenon Underwater Petrified Forest, which has no analog in the Black Sea and is very rare worldwide. The team aims to conduct a comprehensive study of the unique habitat, paleontological and geological phenomenon, the Petrified Forest, and to address a series of scientific questions. This research sheds light on the sedimentation processes related to the fossilization of tree species. X-ray phase analyses were used to compare clay rocks that encase and cover the fossilized trees.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189076","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
The fault network in the southern foot of Rila Mountains, SW BulgariaThe fault network in the southern foot of Rila Mountains, SW Bulgaria 保加利亚西南部里拉山南麓的断层网保加利亚西南部里拉山南麓的断层网
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.159
I. Gerdjikov, D. Vangelov
{"title":"The fault network in the southern foot of Rila Mountains, SW BulgariaThe fault network in the southern foot of Rila Mountains, SW Bulgaria","authors":"I. Gerdjikov, D. Vangelov","doi":"10.52215/rev.bgs.2023.84.3.159","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.159","url":null,"abstract":"Southwestern slopes of Rila Mountain and northern parts of the Mesta graben are one of the least studied areas in terms of brittle tectonics. We carried out studies in the area around Bachevo and Dobarsko villages aiming to observe the fault zone network. The Bachevo fault zone is defined as Paleogene–Eocene Low-Angle Normal Fault that later underwent strike-slip and normal fault reactivation. The zone is an important tectonic boundary, separating the ca. 56 Ma Kapatnik granite from the Ograzhden Unit. Another important and possibly younger extensional zone is the Semkovo Fault. The relationships between the both zones are unclear. In terms of the Quaternary tectonics, it is important to differentiate between the Semkovo fault and the active Southeastern Rila Normal Fault. There are no data about Quaternary activity of the Bachevo fault zone.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139189283","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
Defining of prospective areas for the localization of groundwater in fractured massifs (on the example of the Municipality of Brezovo, Plovdiv Region) 确定断裂丘陵区地下水定位的前景区域（以普罗夫迪夫州布雷佐沃市为例）
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.283
S. Kolev, Peter Gerginov, A. Benderev, Aglaida Toteva, Simeon Valchev, Mila Trayanova-Koleva
{"title":"Defining of prospective areas for the localization of groundwater in fractured massifs (on the example of the Municipality of Brezovo, Plovdiv Region)","authors":"S. Kolev, Peter Gerginov, A. Benderev, Aglaida Toteva, Simeon Valchev, Mila Trayanova-Koleva","doi":"10.52215/rev.bgs.2023.84.3.283","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.283","url":null,"abstract":"The northern part of the Municipality of Brezovo falls within the range of a fractured massif, which predetermines the presence of springs with a limited flow rate, insufficient for water supply for the villages there, which necessitates the localization of suitable locations for boreholes drilling. After a complex assessment of the geological-hydrogeological and tectonic conditions and field surveys, favorable sections were determined with prerequisites for the presence of probable water-saturated fractured zones. As a result of geophysical surveys carried out using the SP method, in the area of the villages of Svezhen, Chehlare and Rozovets, deep water-bearing zones were delineated, which were convincingly confirmed during the subsequent exploratory drilling.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139190061","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
Geochemistry of rutiles from metamorphic rocks of Asenitsa and Arda Units, Central Rhodope, Bulgaria – preliminary results 保加利亚中部罗多坡阿塞尼察和阿尔达单元变质岩中金红石的地球化学--初步结果
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.97
Milena Georgieva, Tzvetomila Vladinova
{"title":"Geochemistry of rutiles from metamorphic rocks of Asenitsa and Arda Units, Central Rhodope, Bulgaria – preliminary results","authors":"Milena Georgieva, Tzvetomila Vladinova","doi":"10.52215/rev.bgs.2023.84.3.97","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.97","url":null,"abstract":"We present new data on the geochemistry of rutiles from metamorphic rock of the Asenitsa and Arda Units, Central Rhodope Massif, Bulgaria. Trace elements in studied rutiles show large variations that depend on protolith type (metapelites and metabasites), metamorphic grade, the rock geochemistry and mineral association. Zr-in-rutile thermometry distinguishes the rutiles from both units with higher temperatures (650–750 °C) for the Arda Unit and lower temperatures (520–630 °C) for the Asenitsa Unit. The uranium content of most rutiles is too low (<0.5 ppm) for U-Pb dating.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139190277","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 geological modeling of ore zones in the Sedefche deposit, Bulgaria 保加利亚 Sedefche 矿床矿带的三维地质建模
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.215
Stoyan Klimentov, Kalin Rouskov
{"title":"3D geological modeling of ore zones in the Sedefche deposit, Bulgaria","authors":"Stoyan Klimentov, Kalin Rouskov","doi":"10.52215/rev.bgs.2023.84.3.215","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.215","url":null,"abstract":"In this study, several geostatistical tools have been employed for the spatial analysis and prediction of the ore body contents in the Sedefche deposit, which is located in the easternmost part of the Zvezdel-Pcheloyad ore field. To test the conditions of stationary and to define a domain reflecting this stationarity, the following approach was applied: modeling of the ore bodies (Wireframe modeling); analysis of domain boundaries, and estimation (Variogram models). The resulted three-dimensional model illustrates the spatial characteristics of Au content distribution and the morphology of the ore body within the Sedefche deposit.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139190622","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
Sulphate mineralization from one locality in Lozen ore field, Eastern Rhodopes 东罗多佩山脉洛津矿区一处硫酸盐矿化物
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.47
Rositsa Nikolova, Vladyslav Kostov-Kytin, P. Petrov, Liliya Tsvetanova, Nikolay Gospodinov, Kristina Metodieva
{"title":"Sulphate mineralization from one locality in Lozen ore field, Eastern Rhodopes","authors":"Rositsa Nikolova, Vladyslav Kostov-Kytin, P. Petrov, Liliya Tsvetanova, Nikolay Gospodinov, Kristina Metodieva","doi":"10.52215/rev.bgs.2023.84.3.47","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.47","url":null,"abstract":"A suite of sulphates from a locality in Lozen ore field in the Eastern Rhodopes has been characterized by chemical analyses and X-ray diffraction. Three mineral species have been identified: epsomite (MgSO4), pickeringite (MgAl2(SO4)4•22H2O) and alunogen (Al2(SO4)3•17H2O). An attempt was made to characterize the phase transformations that occur upon wetting of the studied samples. The results show that at high humidity, pickeringite dissolves, providing constituents for subsequent crystallization of epsomite and alunogen. Further on, upon drying alunogen loses some of its crystallization water and recrystallizes again to pickeringite including magnesium species from the surrounding medium. This study draws light on certain genetic aspects related to the mechanisms and sequence of deposition of sulphate mineralization under similar conditions.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139190909","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
Silver-impregnated zeolitized tuffs for environmental degradation of ozone 用于臭氧环境降解的银浸渍沸石化凝灰岩
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.15
B. Barbov, K. Zaharieva, Petya Karakashkova, H. Penchev
{"title":"Silver-impregnated zeolitized tuffs for environmental degradation of ozone","authors":"B. Barbov, K. Zaharieva, Petya Karakashkova, H. Penchev","doi":"10.52215/rev.bgs.2023.84.3.15","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.15","url":null,"abstract":"The natural zeolites were ultrasonically treated and impregnated with silver nanoparticles. The surface stabilized silver nanoparticles dispersion was obtained using an effective electrochemical reduction method. The phase and elemental composition, structure of the Ag-impregnated zeolites (clinoptilolite and mordenite) was studied by various methods such as powder X-ray diffraction, X-ray fluorescence analyses and Fourier-transform infrared spectroscopy. The Ag-impregnated clinoptilolite and mordenite natural zeolite materials with 1.20 wt %, 0.97 wt %, 0.83 wt % and 1.18 wt % silver content were established by XRF analysis. As initial materials were used three types clinoptilolite from Beli Plast, Most, Golobradovo (Kardzhali, Bulgaria) deposits and mordenite from Lyaskovets deposit in Eastern Rhodopes, Bulgaria. The catalytic ability of Ag-mordenite and Ag-clinoptilolites was investigated in the ecologically important reaction of ozone decomposition. The Ag-loaded mordenite demonstrates the higher conversion degree of ozone more than 40% in comparison with Ag-clinoptilolite materials at room temperature.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139191206","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
Model based impact assessment on groundwater vulnerability during aggregate quarry operation 基于模型的砂石场运营期间地下水脆弱性影响评估
Review of the Bulgarian Geological Society Pub Date : 2023-12-01 DOI: 10.52215/rev.bgs.2023.84.3.311
Nikolay Stoyanov
{"title":"Model based impact assessment on groundwater vulnerability during aggregate quarry operation","authors":"Nikolay Stoyanov","doi":"10.52215/rev.bgs.2023.84.3.311","DOIUrl":"https://doi.org/10.52215/rev.bgs.2023.84.3.311","url":null,"abstract":"A general methodological approach is proposed for the preliminary assessment of the potential impact on groundwater during the operation of quarries for aggregates. The practical application and effectiveness of this approach are by using a numerical model to predict groundwater and soil contamination during the implementation of a project in the region of Breznik, Western Bulgaria. The spread of highly mobile pollutants in both the unsaturated and saturated zones of the rock complex is simulated after emergency spills and prolonged discharges of contaminated water in the quarry area. The forecast is made for a period of 100 years. The numerical model was compiled using the VS2DI program.","PeriodicalId":509487,"journal":{"name":"Review of the Bulgarian Geological Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139193126","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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