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

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Ore shoots formation in a sinistral strike-slip setting: an interpreted from the map of the Au-Ag Milin Kamak deposit in the Breznic area, Southwest Bulgaria 左旋走滑背景下的矿柱形成:对保加利亚西南部布列兹尼奇地区金银米林卡马克矿床地图的解释
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.2022.83.3.131
Dian Strahilov, P. Doychev, I. Dimitrov
{"title":"Ore shoots formation in a sinistral strike-slip setting: an interpreted from the map of the Au-Ag Milin Kamak deposit in the Breznic area, Southwest Bulgaria","authors":"Dian Strahilov, P. Doychev, I. Dimitrov","doi":"10.52215/rev.bgs.2022.83.3.131","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.131","url":null,"abstract":"This work presents а structural interpretation of a well-known gold deposit from SW Bulgaria. The interpretation is based on the geological map and structural data, collected during the prospecting. The data indicates that а regional sinistral shearing was responsible for a low rank sinistral shear system, which created ore depositional space by the combined action of shear extension and compression. The two mechanisms opened tension gashes, dilated previously formed Riedel faults and buckled the veins and the faults. The buckling happened, when the structures were rotated anticlockwise in the compressional quadrant of the space between the regional shears thus creating buckling structures. Ore shoots have been formed in the extended domains of the main shear and along the dilated previously formed Riedel shears.","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":"42913645","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 data on the genus Cornus L. (Cornaceae) in the Bulgarian Miocene flora 保加利亚中新世植物区系中山茱萸属的新资料
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.2022.83.3.145
V. Bozukov, L. Hristova, B. Ranguelov
{"title":"New data on the genus Cornus L. (Cornaceae) in the Bulgarian Miocene flora","authors":"V. Bozukov, L. Hristova, B. Ranguelov","doi":"10.52215/rev.bgs.2022.83.3.145","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.145","url":null,"abstract":"New data on the distribution of species of the genus Cornus on the territory of Bulgaria during the Miocene are presented. The species C. megaphylla was found for the first time in the middle Miocene flora from Satovcha (SW Bulgaria). So far, this species has been established in the middle Miocene flora from Ruzhintsi (NW Bulgaria). A revision of the species C. distans from the Satovcha paleoflora as Cornus aff. alba has also been made. A new finding of a leaf imprint from the Satovcha local paleoflora proves that the fossil material has the closest morphological features to the recent species C. alba.","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":"48381055","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
Mapping and classification of heavy rainfall-induced hazards in the Petrich town area (SW Bulgaria) Petrich镇地区（保加利亚西南部）强降雨引发的灾害测绘和分类
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.2022.83.3.229
I. Gerdjikov, S. Dimitrov, Zornitsa Dotseva, Martin Iliev, D. Vangelov
{"title":"Mapping and classification of heavy rainfall-induced hazards in the Petrich town area (SW Bulgaria)","authors":"I. Gerdjikov, S. Dimitrov, Zornitsa Dotseva, Martin Iliev, D. Vangelov","doi":"10.52215/rev.bgs.2022.83.3.229","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.229","url":null,"abstract":"The torrential catchments located on the northern slopes of Belasitsa Mountain (SW Bulgaria), in the area of Petrich town were affected by an intense rainfall event in December 2021 that triggered a cascade of hazard processes like floods, landslides, debris flows/floods that caused major damage to the road network, properties, and buildings, showing the urgent need to take hazard and risk assessment and mitigation measures. For assessment purposes, we perform field and UAV-based analysis, and mapping of the affected areas, the geomorphological changes after the flooding event, and the different types of identified mass-wasting processes. We also investigated the effects of early December 2021 heavy rain on a regional scale.","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":"43969078","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
Debris flow at the Kirilova poliana (Rila Mountain) on August 22, 2022 2022年8月22日，Kirilova poliana(里拉山)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.2022.83.3.225
A. Sarafov, S. Matev, Dimitar Krenchev, G. Rachev
{"title":"Debris flow at the Kirilova poliana (Rila Mountain) on August 22, 2022","authors":"A. Sarafov, S. Matev, Dimitar Krenchev, G. Rachev","doi":"10.52215/rev.bgs.2022.83.3.225","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.225","url":null,"abstract":"In the present study is characterized the synoptic situation and conditions, which led to a debris flow event in the Manastirska River valley on August 22, 2022. The main reason for the occurrence of this hazardous events is predetermined by one of the right tributaries of the Manastirska River. For the purpose of the study, several morphometric parameters of the tributary were calculated and analyzed such as area and shape of the basin, slopes, aspect, drainage network length, drainage density, etc. The type and the transportation of the sediments were determined by measurements, grain-size and clast-shape analysis. The impact of weather conditions on debris flow occurrence were determined by the analysis of the synoptic conditions on the days before the event.","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":"44245933","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 data on seismic events established by archaeoseismological studies 考古地震学研究建立的地震事件新数据
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.2022.83.3.296
O. Dimitrov, B. Ranguelov
{"title":"New data on seismic events established by archaeoseismological studies","authors":"O. Dimitrov, B. Ranguelov","doi":"10.52215/rev.bgs.2022.83.3.296","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.296","url":null,"abstract":"In the present work, only some of the results obtained from a comparative analysis of the known seismological data and the data from the new archaeoseismological studies are described. Earthquake deformations have been found on structures from the earliest (Eneolithic) era, to effects on better-preserved medieval archaeological sites.","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":"44525448","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
Toula’s fossil deposit in the Garnyovitsa area near Kotel – a geosite of historical value for the Bulgarian geology 图拉的化石矿床位于Kotel附近的Garnyovitsa地区，这是一个对保加利亚地质学具有历史价值的地质遗址
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.2022.83.3.325
D. Sinnyovsky, R. Stoilov
{"title":"Toula’s fossil deposit in the Garnyovitsa area near Kotel – a geosite of historical value for the Bulgarian geology","authors":"D. Sinnyovsky, R. Stoilov","doi":"10.52215/rev.bgs.2022.83.3.325","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.325","url":null,"abstract":"Fossil deposit first described by Franz Toula in 1890, in the Garnyovitsa area near Kotel is estimated as a geosite of a national significance with historical value for the Bulgarian geology. Here is cropping out a huge marl olistolith embedded among Middle Jurassic turbidites of the Kotel Olistostrome Formation. It contains Late Triassic (Norian) hydrozoa and corals, identified by the first explorers of the Bulgarian lands as early as the end of the 19th century. Given the high geodiversity of the area and the proximity to Kotel, this geosite has great potential for geotourism within the future geopark “East Balkan”.","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":"43736205","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
Late Permian high-pressure metamorphism in the Devesil Unit, East Rhodopes (SE Bulgaria) – Single or multiple metamorphic events 东罗多佩Devesil单元晚二叠世高压变质作用（保加利亚东南部）——单一或多重变质事件
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.2022.83.3.109
Lyubomirka Macheva, P. Machev, I. Peytcheva, M. Guillong, J. Plotkina, Е.V. Salnikova, M. Koreshkova
{"title":"Late Permian high-pressure metamorphism in the Devesil Unit, East Rhodopes (SE Bulgaria) – Single or multiple metamorphic events","authors":"Lyubomirka Macheva, P. Machev, I. Peytcheva, M. Guillong, J. Plotkina, Е.V. Salnikova, M. Koreshkova","doi":"10.52215/rev.bgs.2022.83.3.109","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.109","url":null,"abstract":"Metaeclogites from the Devesil Unit, East Rhodopes are studied. Well preserved eclogite paragenesis is presented by omphacite+garnet+rutile and is obliterated by still high temperature retrograde assemblage of newly formed garnet, diopside, amphibole, plagioclase, titanite, and quartz. The P-T conditions of the high pressure metamorphism are in the range 620–665 °C and 1.8–2.0 GPa, whereas the retrograde stage occurs at temperature 600–650 °C and pressure 0.6–0,8 GPa. Cathodoluminescence images and LA-ICP-MS dating of zircon grains point to multiple metamorphic origin of the mineral the earliest with Late Permian–Early Triassic age, followed by Early Jurassic and Early Cretaceous metamorphic events.","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":"42782734","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
Underground research laboratory (URL) for geological disposal of radioactive waste and possibility for construction in Bulgaria 地下研究实验室(URL)，用于放射性废物的地质处置和在保加利亚建设的可能性
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.2022.83.3.275
M. Tsvetkova
{"title":"Underground research laboratory (URL) for geological disposal of radioactive waste and possibility for construction in Bulgaria","authors":"M. Tsvetkova","doi":"10.52215/rev.bgs.2022.83.3.275","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.275","url":null,"abstract":"The construction of an underground research laboratory (URL) precedes the construction of a repository for geological disposal of а radioactive waste. The article considers the types of laboratories, their main objectives and tasks. Based on a comparative analysis between the sites selected as prospective for geological disposal in Bulgaria, the Sumer site in the Sumer Formation is proposed for further investigation as an alternative for URL construction.","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":"47976323","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
Assessing the potential of Assarel porphyry copper deposit for critical raw materials: mineral-geochemical data for combination with agile exploration methods and better geo-modeling 评估Assarel斑岩铜矿关键原材料的潜力:结合敏捷勘探方法和更好的地质建模的矿物地球化学数据
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.2022.83.3.113
I. Peytcheva, A. Hikov, S. Georgiev, Elitsa Stefanova, D. Dimitrova, D. Ivanov, V. Stoilov, I. Vasilev, M. Holma
{"title":"Assessing the potential of Assarel porphyry copper deposit for critical raw materials: mineral-geochemical data for combination with agile exploration methods and better geo-modeling","authors":"I. Peytcheva, A. Hikov, S. Georgiev, Elitsa Stefanova, D. Dimitrova, D. Ivanov, V. Stoilov, I. Vasilev, M. Holma","doi":"10.52215/rev.bgs.2022.83.3.113","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.113","url":null,"abstract":"The supply of European critical raw materials (CRMs) does not currently meet the European demand. This gap is predicted to increase, making Europe even more dependent on outside suppliers. AGEMERA is a project to help tackle this strategic problem by studying several CRM sites in Finland, Poland, Spain, the Balkans, and Zambia in different deposit types. To check the potential of the porphyry systems in Europe as a source of CRMs, the Assarel porphyry-Cu deposit was chosen as a test site. Here we present preliminary geochemical and mineral chemistry data for hydrothermal ore and alteration minerals in Assarel that reveal the potential of the deposit to source some CRMs as by-products. Further studies will combine the geochemical data with innovative geophysical methods for an improved deposit model and provide enhanced knowledge about effective exploration techniques for CRMs.","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":"47422933","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
New field and petrographic data about igneous rocks from Barnard Point, Livingston Island, Antarctica 南极洲利文斯顿岛巴纳德角火成岩的新野外和岩石学资料
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.2022.83.3.125
Stefan Velev, Stefan Metodiev, N. Georgiev
{"title":"New field and petrographic data about igneous rocks from Barnard Point, Livingston Island, Antarctica","authors":"Stefan Velev, Stefan Metodiev, N. Georgiev","doi":"10.52215/rev.bgs.2022.83.3.125","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.125","url":null,"abstract":"The Southeastern area of Livingston Island is built up by igneous rocks of the Eocene Barnard Point Pluton and related or younger dykes. Our new field and petrographic studies in the area show that the pluton consists of several main rock varieties namely gabbro, gabbrodiorite, granodiorite and granites, whose relationships evidences magma mixing processes. The internal parts of the former chamber contain levels enriched in mafic microgranular enclaves forming pronounced magmatic foliation, which towards western contact of the pluton transits to a subvertical N-S trending solid-state foliation and both parallelize the main foliation of the metamorphic host rocks. The latter evidences for a room creation and magma emplacement in tectonically active setting.","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":"47695535","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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