Bulletin of the Mineral Research and Exploration最新文献_第10页

Geological Properties of Güney Formation (Ereğli-Ulukışla Basin, Niğde) g<s:1> ney组地质性质(Ereğli-Ulukışla盆地，Niğde)

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Bulletin of the Mineral Research and Exploration Pub Date : 2021-01-07 DOI: 10.19111/BULLETINOFMRE.855696

ayfer özdemir, N. Sonel

引用次数: 0

The relationship between seismic quality factor and peak ground acceleration, a case study: M=4.3, 17.01.2015 Eskisehir Earthquake 地震质量因子与峰值地加速度的关系，以2015年1月17日Eskisehir地震M=4.3为例

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Bulletin of the Mineral Research and Exploration Pub Date : 2020-12-16 DOI: 10.19111/bulletinofmre.841785

M. Tün

{"title":"The relationship between seismic quality factor and peak ground acceleration, a case study: M=4.3, 17.01.2015 Eskisehir Earthquake","authors":"M. Tün","doi":"10.19111/bulletinofmre.841785","DOIUrl":"https://doi.org/10.19111/bulletinofmre.841785","url":null,"abstract":"Seismic wave propagation in subsurface media endures from absorption, which can be evaluated by the seismic quality factor Q (Q-factor). Absorption is frequency-dependent. Lower frequencies are absorbed less, while higher frequencies are absorbed more. Therefore, the Q Factor should be determined in the frequency domain. Q-factor is determined by the slope of the natural logarithm of the output-input signals ratio. Surface waves (Rayleigh and Love waves) are particularly important, as they are the more destructive phases of an earthquake. In this study, I focused on the Q-factor computation of the surface waves and demonstrated that the determination of the Q-factor is not affected from the dispersive properties of the surface waves. Data were obtained from surface wave signals of earthquake recorded at Eskisehir Technical University Seismic Network EstuNet. The obtained Q-factor values represent the average values of the rocks that the waves cross between the input and output stations. Finally, I compared the Q-factor map to the Peak Ground Acceleration (PGA) map using the M=4.3, 17.01.2015 Eskisehir earthquake data. These records, which show the arrival time of the earthquake from the epicenter to the stations of the seismic waves, and the peak ground acceleration values. In this study, local site effects of EstuNet accelerometric stations have been calculated by using the Standard Spectral Ratio (SSR) method. I concluded that an inverse relationship exists between the computed Q-factor and measured PGA values. Therefore, the sites where the Q factor is very low should be analyzed in more detail in ground-based earthquake risk assessments.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":"1-25"},"PeriodicalIF":0.5,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42715978","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

Alien foraminifers of the northern and northeastern coastlines of Cyprus Island 塞浦路斯岛北部和东北部海岸线的外来有孔虫

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Bulletin of the Mineral Research and Exploration Pub Date : 2020-12-10 DOI: 10.19111/bulletinofmre.838609

M. B. Yokes, I. Barut, A. Nazik, Mustafa Eryilmaz, F. Yücesoy-Eryilmaz, Fatih Hüseyinoğlu, M. Kumral, E. Sarı

{"title":"Alien foraminifers of the northern and northeastern coastlines of Cyprus Island","authors":"M. B. Yokes, I. Barut, A. Nazik, Mustafa Eryilmaz, F. Yücesoy-Eryilmaz, Fatih Hüseyinoğlu, M. Kumral, E. Sarı","doi":"10.19111/bulletinofmre.838609","DOIUrl":"https://doi.org/10.19111/bulletinofmre.838609","url":null,"abstract":"Received Date: 10.09.2020 Accepted Date: 08.12.2020 ABSTRACT The study area covers the northern coasts of Cyprus from the Güzelyurt Gulf to the Gazimağusa Gulf. This study was carried out in order to reveal the presence of the alien foraminifera, which are widely distributed in the Eastern Mediterranean particularly Amphistegina lobifera in the study area, and the effects of trace elements on faunal assemblages (foraminifera, ostracod and mollusc). The bottom sediment samples were taken from eighteen different points and depths, the faunal assemblages were examined, and the sediment distribution map of the studied area was made by ICP-MS analysis and geochemical evaluations. 30 genera and 48 species of foraminifera have been identified, of which 9 species belonging to 6 genera are the alien foraminifera. These are: Spiroloculina angulosa, S. antillarum, Hauerina diversa, Coscinospira hemprichii, Peneroplis pertusus, P. planatus, Amphisorus hemprichii, Sorites orbiculus and Amphistegina lobifera. Amphistegina lobifera was observed to be abnormally abundant in most of the samples. This foraminiferal assemblage of Red Sea origin constitutes a poor assemblage compared to the alien assemblages in Turkish Mediterranean coastal areas. It has been determined that the ostracod and mollusc genera and species found in the same samples belong to the typical Mediterranean and Aegean Sea community. Alien foraminifers of the northern and northeastern coastlines of Cyprus Island","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44402240","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

Investigation of the coefficient of consolidation of fine-grained soils using combined apparatus 用组合仪器研究细粒土固结系数

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Bulletin of the Mineral Research and Exploration Pub Date : 2020-12-04 DOI: 10.19111/bulletinofmre.835936

R. Asadi, K. Kayabali, M. C. Balci

引用次数: 1

Beneficiation and flowsheet development of a low grade iron ore: a case study 某低品位铁矿选矿及流程开发实例研究

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Bulletin of the Mineral Research and Exploration Pub Date : 2020-12-01 DOI: 10.19111/bulletinofmre.834182

Ö. Özcan, Ahad Aghlmandi Harzanagh, E. Orhan, Ş. Ergün

{"title":"Beneficiation and flowsheet development of a low grade iron ore: a case study","authors":"Ö. Özcan, Ahad Aghlmandi Harzanagh, E. Orhan, Ş. Ergün","doi":"10.19111/bulletinofmre.834182","DOIUrl":"https://doi.org/10.19111/bulletinofmre.834182","url":null,"abstract":"In the present study a detailed characterization followed by beneficiation of low grade iron ore was studied. The Run of Mine (R.O.M) sample assayed 21.91 % Fe, which is very low grade in nature. The impurities are SiO2 26.25%, MgO 20.48%, CaO 5.85%, Al2O3 1.86% and loss on ignition (LOI) 12.71%. A Davis Tube test was performed for the assessment of the separability of magnetic ores by low intensity magnetic separators. The heavy liquid test was carried out to evaluate the possible response of the sample by the gravity concentration technique. The samples were subjected to jigging, dry low intensity magnetic separation (DLIMS) and shaking table tests. Thus a sufficient concentrate could not be obtained in +1 mm by using jigging and DLIMS. The obtained results show that the a high grade iron concentrate (>65% Fe) with lower recoveries was obtained from shaking table tests by using -1 mm fraction. According to the results a flowsheet was developed. From the developed flowsheet, it is possible to obtain pellet grade concentrate with 65.41% Fe, 2.54% SiO2, 2.79% MgO, 0.70% CaO and 0.32% Al2O3. with 21.42% weight recovery. The overall gangue rejection recovery of the circuit is over 95%.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":"1-24"},"PeriodicalIF":0.5,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46267535","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

Optimization of leaching conditions for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite 铬铁矿选矿厂尾矿中镁的浸出条件优化

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Bulletin of the Mineral Research and Exploration Pub Date : 2020-11-18 DOI: 10.19111/bulletinofmre.827630

H. Çiftçi, B. Arslan, A. Bilen, Zeyni Arsoy, B. Ersoy

{"title":"Optimization of leaching conditions for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite","authors":"H. Çiftçi, B. Arslan, A. Bilen, Zeyni Arsoy, B. Ersoy","doi":"10.19111/bulletinofmre.827630","DOIUrl":"https://doi.org/10.19111/bulletinofmre.827630","url":null,"abstract":"In this study, leaching experiments were performed for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite. The X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyzes showed that the tailing sample contains 39.3wt.% MgO and consist of predominantly lizardite mineral. Hydrochloric acid (HCl) and sulphuric acid (H 2 SO 4 ) were used as acids separately in leaching experiments. Acid concentration, leaching temperature, leaching time, and solid ratio were investigated as leaching parameters and optimized. Maximum magnesium extraction yield was determined to be nearly 98% for both acids under optimum leaching parameters which leaching temperature was 85 o C, solid ratio was 20wt.%, leaching time was 120 min, and acid concentrations were 6 M for HCl and 4 M for H 2 SO 4 . In addition, it was determined that the leaching residue as a solid state was mainly composed of amorphous silicate according to the XRD analysis. Dissolution rate data were explained using Jander equation. Mg dissolution process found to be diffusion controlled.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48434685","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 Relation of Seismic Velocity and Attenuation Pattern in the East Anatolian Fault Zone with Earthquake Occurrence: Example of January 24, 2020 Sivrice Earthquake 东安纳托利亚断裂带地震速度和衰减模式与地震发生的关系——以2020年1月24日西弗里斯地震为例

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Bulletin of the Mineral Research and Exploration Pub Date : 2020-11-10 DOI: 10.19111/bulletinofmre.824032

Ş. Şahin, E. Oksum

引用次数: 5

The effect of urban heat island on groundwater located in shallow aquifers of Kutahya city center and shallow geothermal energy potential of the region 城市热岛对库塔亚市中心浅层含水层地下水和该地区浅层地热能潜力的影响

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Bulletin of the Mineral Research and Exploration Pub Date : 2020-11-03 DOI: 10.19111/bulletinofmre.820395

Ali Samet Öngen, Z. Ergüler

引用次数: 3

Cünür volkanojenik masif sülfid cevherleşmesinin jeolojik ve jeokimyasal özellikleri (Kastamonu, Türkiye) 大型火山锥块状硫化物珠宝的地质和地质神话特征（土耳其卡斯塔蒙）

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Bulletin of the Mineral Research and Exploration Pub Date : 2020-11-03 DOI: 10.19111/bulletinofmre.820436

Kurtuluş Günay

引用次数: 0

Systematic and biostratigraphic evaluation of the Late Cretaceous benthic foraminifera assemblages of southeastern Batman 巴特曼东南部晚白垩世底栖有孔虫组合的系统和生物地层学评价

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Bulletin of the Mineral Research and Exploration Pub Date : 2020-10-13 DOI: 10.19111/bulletinofmre.809914

Derya Sinanoğlu

{"title":"Systematic and biostratigraphic evaluation of the Late Cretaceous benthic foraminifera assemblages of southeastern Batman","authors":"Derya Sinanoğlu","doi":"10.19111/bulletinofmre.809914","DOIUrl":"https://doi.org/10.19111/bulletinofmre.809914","url":null,"abstract":"The study area is located in 15 km west of Gercüş town (Batman southeast) from the northern margin of Arabian Platform. This locality is the only outcrop for scientific studies of the Garzan formation which is an Bull. Min. Res. Exp. (2021) 165-? Bulletin of the Mineral Research and Exploration http://bulletin.mta.gov.tr B U L L E T IN O F T H E CONTENTS Foreign Edition ISSN : 0026 4563 BULLETIN OF THE MINERAL RESEARCH AND EXPLORATION UN CO RR EC TE D PR OO F important oil-bearing reservoir in southern Anatolia. The unit, consisting of beige-yellowish, thin-thick bedded, limestones with benthic foraminifera and algea, has a rich fossil diversity and quantitative values. This diversity is noteworthy in the benthic foraminifera. These assemblages are represented by Vandenbroekia munieri Marie, Coskinolina sp., Cyclogyra sp. with porcellaneous wall; Biconcava bentori Hamaoui, Nezzazata simplex Omara, Nezzazatinella picardi (Henson), Trochospira avnimelechi Hamaoui, Antalyna korayi Farinacci and Köylüoğlu, Moncharmontia apenninica (De Castro), Moncharmontia compressa (De Castro), Fleuryana adriatica (De Castro), Pseudocyclammina sphaeroidea Gendrot, Broeckinella arabica Henson, Cuneolina pavonia d’Orbigny, Cuneolina ketini Inan, Dicyclina schlumbergeri Munier-Chalmas, Pseudolituonella reicheli Marie, Dictyoconella complanata Henson, Minouxia lobata Gendrot, Minouxia gümbelitrioides Marie, Arenobulimina sp. with microgranular and agglutinant wall and Fissoelphidium operculiferum Smout, Orbitoides medius (d’Archiac), Orbitoides megaloformis Papp and Küpper, Omphalocyclus anatoliensis Özcan, Sırtina orbitoidiformis Brönnimann and Wirtz, Goupillaudina sp. with hyaline wall. In this study, the age of Garzan formation has been determined as Maastrichtian based on benthic foraminifera.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47356831","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