Pub Date : 2022-11-01DOI: 10.19111/bulletinofmre.1198192
R. G. Oskay, A. Karayiğit
The Parçikan coalfield hosts a late Miocene 1.1-m thick coal seam. This study aims to determine coal quality, mineralogy, petrography and geochemistry, and controlling factors of elemental enrichments. The coals are generally black and greyish black in colour, and the low part of the seam commonly includes fossil shell remains. The ash yield displays a decreasing trend towards the upper part of the seam; in turn, gross calorific and total C values increase upwards. The total S content being generally higher than 5% (on dry basis), displays an increasing trend towards the upper part. In the entire seam, huminite is the most common maceral group, while inertinite and liptinite display variable proportions. The identified minerals by XRD are mainly quartz, clay minerals, calcite, pyrite, and aragonite (in fossil shell remains-bearing samples), whereas feldspars and marcasite determined in a few samples. Furthermore, in the coal samples, celestine and barite were identified by SEM-EDX. This study indicates that precipitation of celestine and Sr-bearing barite grains during diagenetic stage and Sr-uptake by mollusc within the palaeomire caused Sr enrichment in the entire seam. Overall, the water influx and redox conditions controlled the mineralogical and the elemental compositions of the coal seam.
{"title":"Coal quality, mineralogy, petrography, and geochemistry of the high-strontium Parçikan lignite","authors":"R. G. Oskay, A. Karayiğit","doi":"10.19111/bulletinofmre.1198192","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1198192","url":null,"abstract":"The Parçikan coalfield hosts a late Miocene 1.1-m thick coal seam. This study aims to determine coal quality, mineralogy, petrography and geochemistry, and controlling factors of elemental enrichments. The coals are generally black and greyish black in colour, and the low part of the seam commonly includes fossil shell remains. The ash yield displays a decreasing trend towards the upper part of the seam; in turn, gross calorific and total C values increase upwards. The total S content being generally higher than 5% (on dry basis), displays an increasing trend towards the upper part. In the entire seam, huminite is the most common maceral group, while inertinite and liptinite display variable proportions. The identified minerals by XRD are mainly quartz, clay minerals, calcite, pyrite, and aragonite (in fossil shell remains-bearing samples), whereas feldspars and marcasite determined in a few samples. Furthermore, in the coal samples, celestine and barite were identified by SEM-EDX. This study indicates that precipitation of celestine and Sr-bearing barite grains during diagenetic stage and Sr-uptake by mollusc within the palaeomire caused Sr enrichment in the entire seam. Overall, the water influx and redox conditions controlled the mineralogical and the elemental compositions of the coal seam.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49533644","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}
Pub Date : 2022-10-31DOI: 10.19111/bulletinofmre.1197260
Sinem Aykaç, Abdullah Gürer, İmam Çeli̇k, Batuğhan Yikmaz, Erdoğan Eryilmaz, E. Apatay, Sami Aytaç Özdemi̇r, Sermet Gündüz, Tuğçe Can, E. Ak, Erdener Izladi, Salih Erden, Zeynep Rezzan Özerk, R. Güney, Esra Burcu Köse, Busra Demirci
It is aimed to reveal the basement topography, the coal-bearing levels, the alteration zones containing uranium ore, and the tectonic structure prevailing by using 2D seismic reflection method in the Thrace Paleogene-Neogene Basin. In this context, seismic data collected on the six profiles were interpreted by correlating with the data of 97 wells. In the seismic lines, respectively, the Metamorphic Basement-Eocene boundary, the top of the coal-bearing zone and the boundary of the Danişmen-Ergene formations were confirmed by using the borehole data. By evaluating seismic data, the coal propagation is modeled with 3D figures. Moreover, coal accumulation starts from the southwest of the field and continues towards the northeast, and it is supported by the results obtained from the borehole data. The presence of uranium ore in some of the alteration zones and borehole data indicated that all alteration zones determined should be inspected for uranium ore. In addition to normal and reverse faults, positive and negative flower structures formed in the strike-slip fault zones were determined, and lignite deposits were cut in the flank of these structures. Finally, it is recommended to carry out seismic studies before drilling, to investigate potential coal and uranium areas and to plan more seismic lines.
{"title":"Determination of the coal-bearing zones and the alteration zones containing uranium ore by using two dimensional (2D) seismic reflection method in Thrace Basin","authors":"Sinem Aykaç, Abdullah Gürer, İmam Çeli̇k, Batuğhan Yikmaz, Erdoğan Eryilmaz, E. Apatay, Sami Aytaç Özdemi̇r, Sermet Gündüz, Tuğçe Can, E. Ak, Erdener Izladi, Salih Erden, Zeynep Rezzan Özerk, R. Güney, Esra Burcu Köse, Busra Demirci","doi":"10.19111/bulletinofmre.1197260","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1197260","url":null,"abstract":"It is aimed to reveal the basement topography, the coal-bearing levels, the alteration zones containing uranium ore, and the tectonic structure prevailing by using 2D seismic reflection method in the Thrace Paleogene-Neogene Basin. In this context, seismic data collected on the six profiles were interpreted by correlating with the data of 97 wells. In the seismic lines, respectively, the Metamorphic Basement-Eocene boundary, the top of the coal-bearing zone and the boundary of the Danişmen-Ergene formations were confirmed by using the borehole data. By evaluating seismic data, the coal propagation is modeled with 3D figures. Moreover, coal accumulation starts from the southwest of the field and continues towards the northeast, and it is supported by the results obtained from the borehole data. The presence of uranium ore in some of the alteration zones and borehole data indicated that all alteration zones determined should be inspected for uranium ore. In addition to normal and reverse faults, positive and negative flower structures formed in the strike-slip fault zones were determined, and lignite deposits were cut in the flank of these structures. Finally, it is recommended to carry out seismic studies before drilling, to investigate potential coal and uranium areas and to plan more seismic lines.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44152334","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}
Pub Date : 2022-10-13DOI: 10.19111/bulletinofmre.1188870
R. Güney, Zeynep Rezzan Özerk, Erdener Izladi, Salih Erden, E. Ak, E. Apatay, Erdoğan Yilmaz, Batuğhan Yikmaz, Sami Aytaç Özdemi̇r, Sermet Gündüz, Tuğçe Can, İmam Çeli̇k, Abdullah Gürer, Sinem Aykaç, Muzaffer Özgü Arisyo, Esra Burcu Köse, Busra Demirci
The presence of the Evaporate salt zone in Ankara-Polatlı region has been determined by the drillings and is thought to be the largest reserve in Turkey. The seismic reflection method was used to determine the top-bottom levels of the zone; its depth; its thickness and extent boundaries; the horst-graben structures; base depth and tectonic movements affecting the study area. Data were collected on three seismic lines. The near-surface tomographic velocity sections were compatible with the top of the zone depth observed in the drillings. As a result of the study, the depth and thickness of the top-bottom of the zone were determined along the lines. Within the scope of the study, a combined interpretation was made on the lines by using gravity and seismic data. The extent of the ore zone was determined only in the E-W direction section, but not in the north-south direction lines since they are outside the license area and so, the seismic lines. The closest point of the evaporate zone to the surface is approximately 150 m, deepest point is approximately 310 m, average thickness is approximately 100 m and maximum thickness is 185 m.
{"title":"Evaporate salt exploration by two dimensional (2D) seismic reflection method: Ankara-Polatlı region, Central Turkey","authors":"R. Güney, Zeynep Rezzan Özerk, Erdener Izladi, Salih Erden, E. Ak, E. Apatay, Erdoğan Yilmaz, Batuğhan Yikmaz, Sami Aytaç Özdemi̇r, Sermet Gündüz, Tuğçe Can, İmam Çeli̇k, Abdullah Gürer, Sinem Aykaç, Muzaffer Özgü Arisyo, Esra Burcu Köse, Busra Demirci","doi":"10.19111/bulletinofmre.1188870","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1188870","url":null,"abstract":"The presence of the Evaporate salt zone in Ankara-Polatlı region has been determined by the drillings and is thought to be the largest reserve in Turkey. The seismic reflection method was used to determine the top-bottom levels of the zone; its depth; its thickness and extent boundaries; the horst-graben structures; base depth and tectonic movements affecting the study area. Data were collected on three seismic lines. The near-surface tomographic velocity sections were compatible with the top of the zone depth observed in the drillings. As a result of the study, the depth and thickness of the top-bottom of the zone were determined along the lines. Within the scope of the study, a combined interpretation was made on the lines by using gravity and seismic data. The extent of the ore zone was determined only in the E-W direction section, but not in the north-south direction lines since they are outside the license area and so, the seismic lines. The closest point of the evaporate zone to the surface is approximately 150 m, deepest point is approximately 310 m, average thickness is approximately 100 m and maximum thickness is 185 m.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42300233","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}
Pub Date : 2022-10-13DOI: 10.19111/bulletinofmre.1188507
A. Bennia, I. Zeroual, A. Talhi, Lahcen Wahib Kebir
Recently, groundwater resources are assessed and evaluated using Geographic Information System (GIS) and remote sensing technologies due to their effectiveness and wide spatial coverage. This work aims to identify groundwater potential areas in the Tabelbala region which lies in the Algerian desert in order to help for the solution of water resources shortages. GIS and remote sensing are employed in the preparation of the controlling factors such as lithology, lineaments, drainage network, slope, land use/land cover, topographic wetness index, and elevation. Statistical Analysis, as well as interpretation of remote sensing data, allow the extraction of important features about the study area and its characteristics. The prepared layers are combined with multicriteria analysis to identify the groundwater potential zones (GWPZs) based on their statistical weights. To validate the conducted work, 222 wells/boreholes are collected and prepared to assess the potential areas. Results reveal that the very good potentiality class covers approximately 8.81% of the total area while 6.47% shows very poor potentiality. In addition, the application of the ROC curve shows an AUC of 89% which reveals the effectiveness of the proposed approach. The final resulting map can be used for the identification of suitable sites for wells implantation.
{"title":"Groundwater potential mapping using the integration of AHP method, GIS and remote sensing: a case study of the Tabelbala region, Algeria","authors":"A. Bennia, I. Zeroual, A. Talhi, Lahcen Wahib Kebir","doi":"10.19111/bulletinofmre.1188507","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1188507","url":null,"abstract":"Recently, groundwater resources are assessed and evaluated using Geographic Information System (GIS) and remote sensing technologies due to their effectiveness and wide spatial coverage. This work aims to identify groundwater potential areas in the Tabelbala region which lies in the Algerian desert in order to help for the solution of water resources shortages. GIS and remote sensing are employed in the preparation of the controlling factors such as lithology, lineaments, drainage network, slope, land use/land cover, topographic wetness index, and elevation. Statistical Analysis, as well as interpretation of remote sensing data, allow the extraction of important features about the study area and its characteristics. The prepared layers are combined with multicriteria analysis to identify the groundwater potential zones (GWPZs) based on their statistical weights. To validate the conducted work, 222 wells/boreholes are collected and prepared to assess the potential areas. Results reveal that the very good potentiality class covers approximately 8.81% of the total area while 6.47% shows very poor potentiality. In addition, the application of the ROC curve shows an AUC of 89% which reveals the effectiveness of the proposed approach. The final resulting map can be used for the identification of suitable sites for wells implantation.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42883172","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}
Pub Date : 2022-10-13DOI: 10.19111/bulletinofmre.1188761
Ebru Albayrak
Located between Africa, Asia and Europe, Anatolia is a crossroads for the migration of many mammals such as elephantids. For this reason, important fossils belonging to different species of elephantids were found from various localities. In this study, mammoth molars found in Samsun-Ladik were examined. As a result of the examination, M. meridionalis and M. trogontherii were identified for the first time from this region. Although the number of fossils examined is very small, the results obtained are very important as Mammuthus was identified for the first time from Samsun. When considered together with the Mammuthus species identified from Anatolia so far, the results obtained from Samsun will provide information about the distribution of the Mammuthus genus in Anatolia and the changes it has undergone.
{"title":"First Mammuthus findings from Samsun district (Türkiye)","authors":"Ebru Albayrak","doi":"10.19111/bulletinofmre.1188761","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1188761","url":null,"abstract":"Located between Africa, Asia and Europe, Anatolia is a crossroads for the migration of many mammals such as elephantids. For this reason, important fossils belonging to different species of \u0000 elephantids were found from various localities. In this study, mammoth molars found in Samsun-Ladik were examined. As a result of the examination, M. meridionalis and M. trogontherii were identified for the first time from this region. Although the number of fossils examined is very small, the results obtained are very important as Mammuthus was identified for the first time from Samsun. When considered together with the Mammuthus species identified from Anatolia so far, the results obtained from Samsun will provide information about the distribution of the Mammuthus genus in Anatolia and the changes it has undergone.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46029619","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}
Pub Date : 2022-10-11DOI: 10.19111/bulletinofmre.1187308
A. C. Şengör
This paper is a somewhat enlarged version of my farewell lecture delivered on 23rd March 2022 at the Faculty of Mines of the Istanbul Technical University (ITU). It reviews some of the important developments in geology during the 40 years I was a faculty member at the ITU and the contribution of the ITU geologists to some of these developments. As stipulated in the syllabus, the first hour-and-a half of this lesson we devoted to a discussion of normal faults. As this is my last lesson as a faculty member at the ITU because of the compulsory retirement imposed by law on every professor at age 67 in Türkiye, I gladly respond to a general request that I review in the remaining hour-and-a-half the development of geology in the world during the 40 years I spent at the ITU and ITU's contribution to some of these developments.
{"title":"Farewell lecture by Professor A. M. Celâl Şengör the developments in geology during the last 40 years I spent at the ITU and ITU's contribution","authors":"A. C. Şengör","doi":"10.19111/bulletinofmre.1187308","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1187308","url":null,"abstract":"This paper is a somewhat enlarged version of my farewell lecture delivered on 23rd March 2022 at the Faculty of Mines of the Istanbul Technical University (ITU). It reviews some of the important developments in geology during the 40 years I was a faculty member at the ITU and the contribution of the ITU geologists to some of these developments. As stipulated in the syllabus, the first hour-and-a half of this lesson we devoted to a discussion of normal faults. As this is my last lesson as a faculty member at the ITU because of the compulsory retirement imposed by law on every professor at age 67 in Türkiye, I gladly respond to a general request that I review in the remaining hour-and-a-half the development of geology in the world during the 40 years I spent at the ITU and ITU's contribution to some of these developments.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43307191","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}
Pub Date : 2022-10-10DOI: 10.19111/bulletinofmre.1186708
A. Gürbüz, A. Shala, S. Mustafa, Aytekin Erten
Kosovo is located in a key position in the central-west part of the Balkans providing an opportunity to understand the far-field effects of distributed intracontinental deformation caused by the Aegean extension in the south and Adriatic compression in the west. It is also situated along the NE-SW trending Shkodër-Pejë transverse zone, where the Dinarides and Albanides-Hellenides orogenic belts are juxtaposed. While the instrumental seismicity of the country indicates the activity of this fault zone and many others, the active faults in the country were not discussed in detail in the current literature. In this study, we analysed both the geomorphic and structural features of major mountain front faults in western Kosovo (i.e., Pejë, Istog, Krojmië and Prizen faults) to reveal the relative assessment of their activities and kinematic characters. Geomorphic and morphometric analyses of all the studied four different mountain fronts indicated high activity and tectonic uplift rates of over 0.5 mm/a. On the other hand, according to the collected kinematic data from the observed fault planes, all the studied faults are of normal character representing a dominance of NW-SE-directed extension in western Kosovo, which is most probably caused by the rollback of subducting slab in the Hellenic trench.
{"title":"Active tectonics of western Kosova: Insights from geomorphic 1 and structural analyses","authors":"A. Gürbüz, A. Shala, S. Mustafa, Aytekin Erten","doi":"10.19111/bulletinofmre.1186708","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1186708","url":null,"abstract":"Kosovo is located in a key position in the central-west part of the Balkans providing an opportunity to understand the far-field effects of distributed intracontinental deformation caused by the Aegean extension in the south and Adriatic compression in the west. It is also situated along the NE-SW trending Shkodër-Pejë transverse zone, where the Dinarides and Albanides-Hellenides orogenic belts are juxtaposed. While the instrumental seismicity of the country indicates the activity of this fault zone and many others, the active faults in the country were not discussed in detail in the current literature. In this study, we analysed both the geomorphic and structural features of major mountain front faults in western Kosovo (i.e., Pejë, Istog, Krojmië and Prizen faults) to reveal the relative assessment of their activities and kinematic characters. Geomorphic and morphometric analyses of all the studied four different mountain fronts indicated high activity and tectonic uplift rates of over 0.5 mm/a. On the other hand, according to the collected kinematic data from the observed fault planes, all the studied faults are of normal character representing a dominance of NW-SE-directed extension in western Kosovo, which is most probably caused by the rollback of subducting slab in the Hellenic trench.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41832205","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}
Pub Date : 2022-09-27DOI: 10.19111/bulletinofmre.1180869
Hamza Birinci, Kürşat Ergün, Aslı Zeynep Yavuzoğlu, Korhan Köse, Güniz Büşra Yalçin, Mustafa Berkay Doğan, Fatma Betül Karci, Murat Evren, Ayşe Güngör, B. S. Aydemir
Noises in marine seismic data are one of the biggest obstacles in seismic imaging. The most significant step in seismic data processing is the removal of seismic noise, which can be classified as instrument and background noise. Noise attenuation usually results in improved seismic interpretation by increasing the signal-to-noise ratio. In this study, we will focus on attenuating these seismic noises with several data processing techniques. A number of denoising examples describing swell, strumming/tugging, cavitation, which are background type noises, and streamer-mounted device noise (Nautilus), which is an instrument type noise, were illustrated by analysing a marine 3D seismic dataset which recorded by Oruc Reis Research Vessel in Black Sea project of MTA (Mineral Research and Exploration). This study was achieved by implementing f-x prediction filter (SPARC, DENOISE3D) and f-k filter (DWATT) in t-x domain, radon filter (RADATT) in Tau-P domain by the use of Geovation 2.0 software.
{"title":"Noise attenuation of a 3D marine seismic reflection dataset – A case study in the Southwest Black Sea region","authors":"Hamza Birinci, Kürşat Ergün, Aslı Zeynep Yavuzoğlu, Korhan Köse, Güniz Büşra Yalçin, Mustafa Berkay Doğan, Fatma Betül Karci, Murat Evren, Ayşe Güngör, B. S. Aydemir","doi":"10.19111/bulletinofmre.1180869","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1180869","url":null,"abstract":"Noises in marine seismic data are one of the biggest obstacles in seismic imaging. The most significant step in seismic data processing is the removal of seismic noise, which can be classified as instrument and background noise. Noise attenuation usually results in improved seismic interpretation by increasing the signal-to-noise ratio. In this study, we will focus on attenuating these seismic noises with several data processing techniques. A number of denoising examples describing swell, strumming/tugging, cavitation, which are background type noises, and streamer-mounted device noise (Nautilus), which is an instrument type noise, were illustrated by analysing a marine 3D seismic dataset which recorded by Oruc Reis Research Vessel in Black Sea project of MTA (Mineral Research and Exploration). This study was achieved by implementing f-x prediction filter (SPARC, DENOISE3D) and f-k filter (DWATT) in t-x domain, radon filter (RADATT) in Tau-P domain by the use of Geovation 2.0 software.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48865941","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}
Pub Date : 2022-09-26DOI: 10.19111/bulletinofmre.1180222
Haydar Güneş, Hüseyin Eren Obuz, H. Akçay, Çiğdem Kara, Ayşe Erdem
In this study, the production technology of rare-earth oxides from Eskişehir-Beylikova complex ore that contains barite, fluorite, rare-earth elements, and thorium were investigated. In this study, processes that can be used in production of thorium-free mixed rare earth oxides were tested. Roasting, leaching, solvent extraction and precipitation methods were used in this study, respectively. Roasting temperature and roasting duration were determined as 600 °C and 1 hour, respectively. The optimum leaching parameters were determined as 5 M HCl, 1 hour leaching duration, 1/3 solid/liquid ratio and 35 °C leaching temperature. In the obtained leach liquor, Adogen was 464 used for removal of iron and D2EHPA was used for the removal of thorium. As a result of solvent extraction stuies, the solution containing rare earth elements was precipitated under optimum conditions. After precipitation, the product contains 99.65% rare earth oxides.
{"title":"Production of rare-earth oxides from Eskişehir-Beylikova complex ores","authors":"Haydar Güneş, Hüseyin Eren Obuz, H. Akçay, Çiğdem Kara, Ayşe Erdem","doi":"10.19111/bulletinofmre.1180222","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1180222","url":null,"abstract":"In this study, the production technology of rare-earth oxides from Eskişehir-Beylikova complex ore that contains barite, fluorite, rare-earth elements, and thorium were investigated. In this study, processes that can be used in production of thorium-free mixed rare earth oxides were tested. Roasting, leaching, solvent extraction and precipitation methods were used in this study, respectively. Roasting temperature and roasting duration were determined as 600 °C and 1 hour, respectively. The optimum leaching parameters were determined as 5 M HCl, 1 hour leaching duration, 1/3 solid/liquid ratio and 35 °C leaching temperature. In the obtained leach liquor, Adogen was 464 used for removal of iron and D2EHPA was used for the removal of thorium. As a result of solvent extraction stuies, the solution containing rare earth elements was precipitated under optimum conditions. After precipitation, the product contains 99.65% rare earth oxides.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68447239","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}
Pub Date : 2022-08-03DOI: 10.19111/bulletinofmre.1154017
Mutlu Zeybek, M. Gül, F. Kačaroğlu, E. Karacan, A. Özbek
Caves evolution is controlled by lithological properties, discontinuities, water, climate, and physico-mechanical properties of soluble rocks, vegetation and human impact. This study investigates the cave formation in Upper Miocene-Pliocene clastic rock in Menteşe town of Muğla. The lithology, physico-mechanical properties and hydrogeologic factors of host rocks and morphology of the caves in Asar Hill and Damlam stream valley were examined. The caves are 1.47-9.71 m long, 2.24-19.36 m wide and 1.38-27 m high. Four joint sets and bedding planes affect the clastics in the Asar Hill area. Mudstones (low plasticity clay, sandy clay) are in soft-very soft rock, while conglomerate is in moderate-hard rock class. The mudstone removal has started the formation of the caves. The vegetation roots act as groundwater circulation paths in the Damlam stream area. Water has eroded mudstone and muddy matrix of conglomerate following cracks and led to the formation of the caves. Water infiltration may have led to stalactite, flowstone and travertine formation in Damlam stream caves. Possible cave collapse could threaten life and property in the Asar Hill area, and may cause the destruction of internal structures of the caves in the Damlam stream. Thus, precautionary measures such as continuous monitoring and protection must be taken in both cave areas.
{"title":"Caves in clastic rocks (Muğla, SW Türkiye)","authors":"Mutlu Zeybek, M. Gül, F. Kačaroğlu, E. Karacan, A. Özbek","doi":"10.19111/bulletinofmre.1154017","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1154017","url":null,"abstract":"Caves evolution is controlled by lithological properties, discontinuities, water, climate, and physico-mechanical properties of soluble rocks, vegetation and human impact. This study investigates the cave formation in Upper Miocene-Pliocene clastic rock in Menteşe town of Muğla. The lithology, physico-mechanical properties and hydrogeologic factors of host rocks and morphology of the caves in Asar Hill and Damlam stream valley were examined. The caves are 1.47-9.71 m long, 2.24-19.36 m wide and 1.38-27 m high. Four joint sets and bedding planes affect the clastics in the Asar Hill area. Mudstones (low plasticity clay, sandy clay) are in soft-very soft rock, while conglomerate is in moderate-hard rock class. The mudstone removal has started the formation of the caves. The vegetation roots act as groundwater circulation paths in the Damlam stream area. Water has eroded mudstone and muddy matrix of conglomerate following cracks and led to the formation of the caves. Water infiltration may have led to stalactite, flowstone and travertine formation in Damlam stream caves. Possible cave collapse could threaten life and property in the Asar Hill area, and may cause the destruction of internal structures of the caves in the Damlam stream. Thus, precautionary measures such as continuous monitoring and protection must be taken in both cave areas.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47538997","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}
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