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Evaluation of Gas Potential in Early Cretaceous Shale Lower Indus Basin, Pakistan 巴基斯坦下印度河盆地早白垩世页岩气潜力评价
Pub Date : 2020-07-16 DOI: 10.46660/ijeeg.vol11.iss1.2020.425
B. Ahmed, M. Mohibullah, S. Jalal, S. Abbasi, Abdul S. Khan, S. Alam, H. Rehman
The shale gas potential of the early Cretaceous Talhar shale member of the lower Goru Formation in lower Indus basin of Sanghar district, Sindh province, has been evaluated using 2D seismic and well logs data. Graphical and empirical techniques were applied to calculate various geochemical parameters for the evaluation of shale plays. Total Organic Carbon (TOC) is calculated by Passey's (∆LogR) Overlay technique and its values are about 2.44 wt.%. Vitrinite Reflectance (Ro) is estimated by graphical and empirical relation and the value lies between 0.95-1.0 which implies that the Talhar shale member is in peak oil and initial gas generation phase. Log-derived Maturity Index (LMI) is calculated by NPHI, RHOB or density log and uranium logs. The average value is about 0.55 which reflects that the formation is probably in the initial maturation phase. Kerogen Volume (Vk) is estimated by empirical relation using RHOB log as input and it is about 13 wt. % which reflects that the formation has enough potential of oil/gas expulsion. The results are compared and validated with a study of the adjacent field of the same basin. This study reveals that Talhar member of lower Goru Formation could be the future probable potential unconventional reservoir for exploration in lower Indus basin of Pakistan.
利用二维地震资料和测井资料,对信德省Sanghar地区下印度河盆地早白垩世下Goru组Talhar页岩段的页岩气潜力进行了评价。应用图解法和经验法计算了各种地球化学参数,用于页岩储层评价。总有机碳(TOC)由Passey's(∆LogR)覆盖技术计算,其值约为2.44 wt.%。镜质体反射率Ro值在0.95 ~ 1.0之间,表明塔哈尔页岩段处于油气期和初生气期的峰值阶段。测井衍生成熟度指数(LMI)由NPHI、RHOB或密度测井和铀测井计算。平均值约为0.55,反映地层可能处于初始成熟阶段。以RHOB测井为输入,通过经验关系法估计干酪根体积(Vk)约为13 wt. %,反映了地层具有足够的排油/排气潜力。将研究结果与同一盆地邻近油田的研究结果进行了比较和验证。研究表明,下Goru组Talhar段可能是巴基斯坦下印度河盆地未来勘探的潜在非常规储层。
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引用次数: 0
Analysis of Underground Mining Accidents at Cherat Coalfield, Pakistan 巴基斯坦Cherat煤田地下开采事故分析
Pub Date : 2020-07-07 DOI: 10.46660/ojs.v11i1.422
K. S. Shah, Mohsin Khan, Sajid Khan, Abdur Rahman, N. Khan, N. Abbas
Coal is the most extensively used nonrenewable energy source worldwide. In Pakistan coal is mostly mined by underground mining methods under poor and unsafe working environment. In this study, accident records of underground coal mines of Cherat coal field were collected and analysis was carried out to understand the consequences, time of occurrence and causes of accidents. Besides, occupation of a victim, responsible party and effects on production were also considered in present study. The relationship between workers’ age and severity rate was examined using regression analysis. The main causes of accidents were the fall of the roof, mine gases, electrocution, oxygen deficiency and slip fall. At Cherat coalfield, for every two mines, there is one fatality and most of the accidents occur due to roof fall between 10:00 am to 12:00 noon. It is due to the stress of production efficiency. Moreover, there is a negligible impact of accidents on coal production at Cherat coalfield from 1994 to 2015. Keywords
煤炭是世界上使用最广泛的不可再生能源。在巴基斯坦,煤矿大多采用地下开采方法开采,工作环境恶劣且不安全。本研究收集了Cherat煤田地下煤矿的事故记录,并进行了分析,了解事故的后果、发生时间和原因。此外,本研究还考虑了受害人的职业、责任方以及对生产的影响。采用回归分析对工人年龄与严重程度的关系进行检验。造成事故的主要原因是顶板塌方、矿井瓦斯、触电、缺氧和滑倒。在Cherat煤田,每两个煤矿就有一人死亡,大多数事故发生在上午10时至中午12时之间。这是由于生产效率的压力。此外,1994 - 2015年间,事故对Cherat煤田煤炭生产的影响可以忽略不计。关键字
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引用次数: 6
Dehydroxylation of Minerals of Gadisunkapur Area with Special Reference to FTIR and Thermal Study Gadisunkapur地区矿物的脱羟基作用及其红外光谱和热研究
Pub Date : 2020-07-07 DOI: 10.46660/ijeeg.vol11.iss1.2020.415
Marularadhya C. Hiremath, A. Sreenivasa
This paper attempts to explain the presence of OH group for micas along with some sulfate, chlorite, quartz and feldspar minerals. These minerals are found to be associated with barite vein, metasediments (quartz-chlorite schist), metarhyolite and varieties of granitic rocks of Gadisunkapur area of Hungund-Kushtagi Schist belt. The samples were collected in and around Gadisunkapur village of Bagalkote district, Karnataka and further processed to determine OH group anion in different minerals present based on FTIR and Thermal studies such as Thermogravimetric analysis (TGA) and Differential Thermal analysis (DTA). The high temperature dehydroxylation is investigated using this analysis. Furthermore, present study indicates the presence of different extra species (CO2, CO32- and OH-). The results show the incorporation of CO2 into the structures due to heating or enhanced by the dehydroxylation process.
本文试图解释云母与某些硫酸盐、绿泥石、石英和长石矿物中OH基团的存在。这些矿物与黄冈-库什塔吉片岩带Gadisunkapur地区的重晶石脉、变质沉积物(石英-绿泥石片岩)、变质玄武岩和各种花岗质岩石有关。样品采集于卡纳塔克邦Bagalkote县Gadisunkapur村及其周边地区,并根据FTIR和热分析(如热重分析(TGA)和差热分析(DTA))等热研究进一步处理以确定不同矿物中的OH -阴离子。用这种分析方法研究了高温脱羟基反应。此外,本研究表明存在不同的额外物种(CO2, CO32-和OH-)。结果表明,二氧化碳的加入是由于加热或脱氧过程的增强。
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引用次数: 0
Assessing the Impact of Eucalyptus Plantation on Groundwater Availability in Pakistan 评估巴基斯坦桉树人工林对地下水可利用性的影响
Pub Date : 2020-07-07 DOI: 10.46660/ijeeg.vol11.iss1.2020.413
Sana Nazli, S. Siddiqui, N. Rehman
Eucalyptus tree was first planted in Pakistan in the 1980s under the project of Pakistan Forest Institute sponsored by United States Agency for International Development. It is not native to Pakistan's environment, so it has become a threat to the ecosystem. A mature Eucalyptus tree shape is like a shrub or tall tree. It is centered by the number of controversies like allelopathy, loss of soil fertility, the substitution of conventional forests and causing various hydro-ecological imbalances of an ecosystem. Eucalyptus tree consumes three times more water in arid and semi-arid environments, because of vapor pressure deficit. About 80% of Pakistan's area is present in the semi-arid and arid climate. Pakistan is facing a serious water shortage and rapid groundwater level depletion in many parts of the country. It is believed that species of Eucalyptus tree are extracting more groundwater than water recharge. Therefore, the present study is conducted to identify the adverse impacts of Eucalyptus plantation on the groundwater level of Lahore. Six parks in Lahore were selected as study sites, i.e., Gulshan-e-Iqbal Park, Bagh-e-Jinnah, Jillani Park, Nawaz Sharif Park, Jallo Park, and Johar Town Park. A total of 3,484 Eucalyptus trees were identified with different age groups. These trees belong to the species of Eucalyptus camaldulensis, Eucalyptus citriodora and Eucalyptus sideroxylone. The study reveals that since 1990, the groundwater level has significantly reduced in study sites. It is recommended that Eucalyptus trees may be replaced with other indigenous species so that the rate of groundwater depletion can be slowed down.
在美国国际开发署资助的巴基斯坦森林研究所的项目下,桉树于20世纪80年代首次在巴基斯坦种植。它不是巴基斯坦环境的原生物种,所以它已经成为生态系统的威胁。成熟的桉树形状像灌木或高树。它的中心是一些争议,如化感作用,土壤肥力丧失,替代传统森林和造成生态系统的各种水文生态失衡。在干旱和半干旱环境中,桉树消耗的水分是干旱和半干旱环境的三倍多,因为蒸汽压不足。巴基斯坦大约80%的地区属于半干旱和干旱气候。巴基斯坦正面临着严重的水资源短缺,该国许多地区的地下水位迅速枯竭。人们认为,桉树提取的地下水比补给的水多。因此,本研究旨在确定桉树人工林对拉合尔地下水位的不利影响。拉合尔的六个公园被选为研究地点,分别是Gulshan-e-Iqbal公园、Bagh-e-Jinnah公园、Jillani公园、Nawaz Sharif公园、Jallo公园和Johar Town公园。共鉴定出不同年龄组的桉树3484棵。这些树属于桉树,桉树柠檬香和桉树sideroxylone。研究表明,自1990年以来,研究地点的地下水位明显下降。建议用其他本地树种代替桉树,以减缓地下水枯竭的速度。
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引用次数: 4
Uranium Traps in Phreatic Sandstone-type Prospect, Taunsa Area, Dera Ghazi Khan, Eastern Sulaiman Range, Pakistan: Evidences from Autoradiography and Optical Microscopy 巴基斯坦东苏莱曼山脉Dera Ghazi Khan Taunsa地区潜水砂岩型远景区铀圈闭:来自放射自显影和光学显微镜的证据
Pub Date : 2020-07-07 DOI: 10.46660/ijeeg.vol11.iss1.2020.414
R. Ullah, Nie Fengjuin, Z. Xin, Zhang Chengyong, Asim Ali, Zhang Pengfei
Taunsa uranium occurrence like other uranium resources in Pakistan is hosted by the Late Miocene-Pliocene age Litra Formation of the Siwalik Group molasse sediments. Taunsa uranium prospect is a unique phreatic-type uranium resource in terms of its disturbed geological setting of the eastern limb of the Zindapir anticline in the eastern Sulaiman range. Autoradiography technique was used to locate the spots of anomalous uranium concentration in thin sections from ore of Taunsa prospect. Twenty polished thin sections from uranium ore ranging from 200 ppm-600 ppm were attached to detectors for a month which produced prominent alpha track which were used to find the traps of uranium. Subsequently, these spots were studied under SEM and EPMA for further investigations of uranium phases. Autoradiography revealed that Taunsa uranium ore is mostly associated with organic matter (probably petroleum), black shale clasts, biotite, fougerite (a green colour rusty mineral) and with micritic clasts. This study suggests that prospective facies of the host sandstone containing relatively abundant black shale clasts, organic matter and biotite may be targeted during exploratory drilling in Taunsa uranium deposit and its extensions in the eastern limb of Zindapir anticline
同巴基斯坦其他铀资源一样,Taunsa铀赋存于Siwalik群糖蜜沉积物的晚中新世-上新世Litra组。陶萨铀矿远景区位于苏莱曼山脉东部Zindapir背斜东翼受扰动的地质背景下,是一种独特的俯冲型铀矿资源。利用放射自显影技术对陶萨矿进行了铀浓度异常点的薄片定位。20块铀矿石的抛光薄片(含量从200 ppm-600 ppm不等)被附着在探测器上一个月,产生了明显的阿尔法轨迹,用来寻找铀的陷阱。随后,对这些斑点进行了扫描电镜和电子能谱分析,以进一步研究铀相。放射自显影显示,陶沙铀矿石主要与有机质(可能为石油)、黑色页岩碎屑、黑云母、闪辉石(一种绿色生锈矿物)和泥晶碎屑伴生。研究认为,在Zindapir背斜东缘Taunsa铀矿床及其延伸带勘探钻井中,具有较丰富的黑色页岩碎屑、有机质和黑云母的寄主砂岩远景相可能成为勘探的目标
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引用次数: 3
Aggregate Suitability of the Late Permian Wargal Limestone at Kafar Kot Chashma Area, Khisor Range, Pakistan 巴基斯坦Khisor山脉Kafar Kot Chashma地区晚二叠世Wargal灰岩的聚集适宜性
Pub Date : 2020-07-07 DOI: 10.46660/ojs.v11i1.418
R. Ullah, Shuja Ullah, N. Rehman, Fayyaz Ali, M. Asim, M. Tahir, S. Ullah, Shafiq Muhammad
This study was carried out for the investigation of the Late Permian Wargal limestone at Kafar Kot Chashma area, Khisor Range to determine its suitability as an aggregate that is used in road construction and civil structures with the help of geological engineering testing. The results of geological engineering testing of Wargal limestone samples show the tolerable values of all standard engineering parameters including the Loss Angles Abrasion value (23.37%), Aggregate impact (16.8%), Crushing value 13.1%, Unit weight 1.67, Soundness (1.007%), Specific gravity (2.70), Water Absorption (0.48%), Flakiness Index (6.5%), Elongation value (7.1%), Coating of bitumen (> 95%), stripping of bitumen (<5%), California Bearing Ratio (CBR) value (93.6%), Maximum Dry Density 2.307g/c and Optimum Moisture Content (5.79%). As per different International and National Standards like AASHTO, ASTM, BS and NHA, the mentioned results of various engineering tests were within the tolerable limits. The petrography of the selected samples of the Late Permian Wargal limestone revealed very minor value of quartz (0.5%), hematite/limonite (0.6%) and clay content 1.0% showing the insignificant threat of ASR. The values of dolomite are limited to (1%) which shows that there is no ACR reaction with ordinary Portland cement. The results of geological and engineering parameters of the study area strongly suggest its suitability as a potential aggregate (i.e. for the base course, subbase course, cement concrete and asphalt) in the road construction.
本研究是对Khisor Range Kafar Kot Chashma地区的晚二叠世Wargal石灰岩进行调查,以确定其在地质工程测试的帮助下作为公路建设和土木结构中使用的骨料的适用性。对Wargal石灰石样品进行地质工程测试,结果表明:损耗角磨损值(23.37%)、骨料冲击值(16.8%)、破碎值(13.1%)、单位重量(1.67)、完整性(1.007%)、比重(2.70)、吸水率(0.48%)、片状指数(6.5%)、伸长率(7.1%)、沥青涂层(> 95%)、沥青剥脱(<5%)、加州承载比(CBR)值(93.6%)、最大干密度2.307g/c,最佳含水率5.79%。根据AASHTO、ASTM、BS、NHA等不同的国际和国家标准,上述各项工程试验结果均在可容忍范围内。选取的晚二叠世Wargal灰岩岩石学结果显示,石英(0.5%)、赤铁矿/褐铁矿(0.6%)和粘土含量(1.0%)非常低,表明其ASR威胁不明显。白云石的值限制在(1%),表明与普通硅酸盐水泥没有ACR反应。研究区域的地质和工程参数结果强烈表明其适合作为道路建设中潜在的骨料(即基层,下层,水泥混凝土和沥青)。
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引用次数: 6
Using Remote Sensing for Identifying Suitable Areas for Flood Shelter: A Case Study of Thatta, Sindh Pakistan 利用遥感技术确定适合防洪的地区:以巴基斯坦信德省塔塔为例
Pub Date : 2020-07-07 DOI: 10.46660/ijeeg.vol11.iss1.2020.419
Umer Saleem, Takeshi Mizunoya, Y. Helmut, Ammara Ajmal
The most recurring type of disaster in the world these days is flood because of the spread and extent of its effect on people, among all-natural disasters of the world. Human activities have paved the way for many of these flood behavior to change as they used to be in the past. Pakistan experienced one of the most devastating natural disasters in its history all across the country in 2010, but Thatta district in southern part got severely affected during this flood. For the research, a simple yet efficient methodology Normalized Difference Vegetation Index (NDVI) by using remote sensing images for identifying flood hazard areas was utilized. Geographic Information Systems (GIS) helps in finding shelter areas with a minimum effect of floods. It is essential to realize the importance of mapped results in consideration of manual flood management in future. The method used in this study is robust enough to explain the flood hazard for suggesting suitable shelter sites in case of flooding events. This would help disaster management bodies and other related agencies to formulate the development plans while keeping the hazard areas, which are unsuitable for development due to flood risk in the future.
当今世界上最常见的灾害类型是洪水,因为它对人类的影响范围和程度是世界上所有自然灾害中最广泛的。人类活动已经为许多这些洪水行为的改变铺平了道路,就像它们过去一样。2010年,巴基斯坦全国经历了历史上最具破坏性的自然灾害之一,但南部的塔塔地区在这次洪水中受到严重影响。本研究采用一种简单有效的遥感影像归一化植被指数(NDVI)识别洪涝灾害区域的方法。地理信息系统(GIS)有助于寻找受洪水影响最小的避难所。认识到地图结果在未来人工洪水管理中的重要性是十分必要的。本研究中使用的方法具有足够的鲁棒性,可以解释洪水灾害,为洪水事件提供合适的避难地点。这将有助于灾害管理机构和其他相关机构制定发展计划,同时保留由于未来洪水风险而不适合发展的危险区域。
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引用次数: 2
The Effects of Industrial Value Addition and Energy Consumption on Environmental Deterioration: New Evidence from Islamic Countries 工业增加值和能源消费对环境恶化的影响:来自伊斯兰国家的新证据
Pub Date : 2020-07-07 DOI: 10.46660/ijeeg.vol11.iss1.2020.412
R. Karim, Faqeer Muhammad, J. Qureshi, N. A. Latip, A. Marzuki, Memoona Nilofar
The current research is aimed at finding out the effects of energy consumption and industrial value addition on environmental deterioration. Panel data for the years 2000-2017 was employed to explore the long- and short-term association of variables for the selected Islamic countries. Panel Unit Root Test was used to check the stationarity of the data. Moreover, Fisher panel Co-integration tests, PMG, Fully Modified Ordinary Least Square (FMOLS) and Dynamic Ordinary Least Square method (DOLS) were also applied to find out relationship between the variables. The study suggested that economic growth, industrial value addition and energy consumption positively affect the CO2 emission. Moreover, high-energy consumption to meet the demands of energy in transportation and production sectors leads to increased environmental pollution. The coefficient of industrial value addition shows significant effect on environmental deterioration in long term. Our study suggests the use of cleaner technology in production system and replacing renewable energy by non-renewable energy sources.
目前的研究旨在找出能源消耗和工业增加值对环境恶化的影响。使用2000-2017年的面板数据来探索所选伊斯兰国家变量的长期和短期关联。采用面板单位根检验检验数据的平稳性。采用Fisher面板协整检验、PMG、完全修正普通最小二乘法(FMOLS)和动态普通最小二乘法(DOLS)来确定变量之间的关系。研究表明,经济增长、工业增加值和能源消耗正向影响CO2排放。此外,为了满足运输和生产部门的能源需求而进行的高能量消费导致环境污染加剧。从长期来看,工业增加值系数对环境恶化有显著影响。我们的研究建议在生产系统中使用更清洁的技术,用不可再生能源替代可再生能源。
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引用次数: 3
The Preliminary Study of Anthropogenic and Natural Drivers of Desertification in Drylands of South Punjab, Pakistan 巴基斯坦旁遮普南部旱地沙漠化人为与自然驱动因素的初步研究
Pub Date : 2020-07-07 DOI: 10.46660/ijeeg.vol11.iss1.2020.420
N. Mazhar, S. A. Shirazi
This study aims to investigate the perceptions of farmers residing in the drylands of south Punjab regarding the drivers of desertification mainly associated with meteorological and anthropogenic factors. Dataset of 399 respondents was collected using disproportionate stratified sampling technique from Bahawalpur, Rahim Yar Khan and Rajanpur districts. Pearson correlation and cross tabulation were performed to explore relation between variables. Simple Linear Regression (SLR) helped in investigating the association between natural and anthropogenic causes of desertification. The findings of this study indicate the significant variability in natural causes of desertification such as increasing temperature extremes, soil salinization and variation in rainfall patterns, while extensive land degradation, caused by anthropogenic factor, as leading to desertification in the study area. For Rajanpur, mean rainfall variation, supports the perception regarding major natural driver of desertification. Small-scale farmers were found to be most vulnerable to climatic extremes. SLR concluded that anthropogenic factors trigger or intensify the natural drivers of desertification in the study area. Useful insights are provided regarding the perceptions of the local farming community regarding causes of desertification as appropriate perception of a risk leads to fruitful adaptation measures
本研究旨在调查居住在旁遮普省南部旱地的农民对主要与气象和人为因素相关的荒漠化驱动因素的看法。使用不成比例分层抽样技术从巴哈瓦尔布尔、拉希姆亚尔汗和拉詹布尔地区收集了399名受访者的数据集。采用Pearson相关和交叉表法探讨变量之间的关系。简单线性回归(SLR)有助于调查沙漠化的自然原因和人为原因之间的关系。研究结果表明,极端温度升高、土壤盐渍化和降雨模式变化等自然因素对沙漠化的影响具有显著的变异性,而人为因素引起的广泛土地退化是导致研究区荒漠化的主要原因。在Rajanpur,平均降雨量变化支持关于沙漠化主要自然驱动因素的看法。研究发现,小农最容易受到极端气候的影响。人为因素触发或强化了研究区沙漠化的自然驱动因素。关于当地农业社区对荒漠化原因的看法提供了有用的见解,因为对风险的适当认识导致了卓有成效的适应措施
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引用次数: 3
Geochemical Characterization and Presence of Rare Earth Elements in the Recent Depositions at the Islands of the Eastern Bay of Bengal, Bangladesh 孟加拉东孟加拉湾群岛近代沉积中稀土元素的地球化学特征及存在
Pub Date : 2020-07-07 DOI: 10.46660/ijeeg.vol11.iss1.2020.410
F. Deeba, Syed Hafizur Rahman, M. Z. Kabir, Mohammad Rajib
This study presents geochemical characterization, as well as, quantification of rare earth elements in the recent beach deposition at the two major islands of the eastern Bay of Bengal-Kutubdia and Moheshkhali. Placer sand samples from near surface depositions were analyzed by heavy mineral separation, mineralogical identification, chemical composition and elemental mapping. X-ray diffraction (XRD), X-ray fluorescence (XRF), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS) were used to obtain these results. The heavy mineral concentration in different raw sand samples resulted by heavy liquid separation technique revealed that the average abundance of heavy minerals is 69.67% in Kutubdia island and 9.32% in Moheshkhali island, respectively. The X-ray patterns of Kutubdia and Moheshkhali sand samples show the presence of zircon, quartz, hematite, magnetite, ilmenite, chromite, kyanite, anatase, rutile and garnet. Chemical composition of heavy mineral sands from Kutubdia and Moheshkhali islands were analyzed using X-ray fluorescence method (XRF) for major oxides and trace elements. The concentration is of Na2O, MgO, Al2O3, SiO2, P, K2O, CaO, TiO2, V2O5, Cr2O3, MnO, Fe2O3, CoO, ZnO, SrO, Y2O3 ZrO2, Nb2O5, MoO3, HfO2, WO3, ThO2, U3O8, CeO2, Nd2O and Er2O3 were determined. A significant amount of various rare earth elements (REEs) in the elemental composition of few samples was also identified. The study is expected to be useful in the baseline and environmental aspects of both the islands.
本研究提出了在东孟加拉湾的两个主要岛屿——库图布迪亚岛和莫赫什哈利岛最近的海滩沉积中稀土元素的地球化学特征和定量。采用重矿物分离、矿物学鉴定、化学成分和元素填图等方法对近地表沉积砂砂样品进行了分析。采用x射线衍射(XRD)、x射线荧光(XRF)、扫描电子显微镜与能量色散光谱(SEM-EDS)等方法进行分析。重液分离法测定不同原料砂样品中重矿物含量,结果表明Kutubdia岛和Moheshkhali岛的重矿物平均丰度分别为69.67%和9.32%。Kutubdia和Moheshkhali砂样品的x射线图显示锆石、石英、赤铁矿、磁铁矿、钛铁矿、铬铁矿、蓝晶石、锐钛矿、金红石和石榴石的存在。用x射线荧光法(XRF)分析了库图布迪亚岛和莫赫什哈利岛重矿砂的主要氧化物和微量元素的化学成分。测定了Na2O、MgO、Al2O3、SiO2、P、K2O、CaO、TiO2、V2O5、Cr2O3、MnO、Fe2O3、CoO、ZnO、SrO、Y2O3、ZrO2、Nb2O5、MoO3、HfO2、WO3、ThO2、U3O8、CeO2、Nd2O和Er2O3的浓度。在少数样品的元素组成中还发现了大量的各种稀土元素。预期这项研究将对这两个岛屿的基线和环境方面有用。
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引用次数: 2
期刊
International Journal of Economic and Environmental Geology
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