Bulletin of the Mineral Research and Exploration最新文献

Investigation of gas and gas hydrate accumulations along the continental margin of the Danube Delta (Romania and Bulgaria offshore) using seismic reflection data 利用地震反射数据调查多瑙河三角洲大陆边缘（罗马尼亚和保加利亚近海）的天然气和天然气水合物聚集情况

IF 0.5

Bulletin of the Mineral Research and Exploration Pub Date : 2023-12-28 DOI: 10.19111/bulletinofmre.1411403

O. Atgin, G. Çifçi

{"title":"Investigation of gas and gas hydrate accumulations along the continental margin of the Danube Delta (Romania and Bulgaria offshore) using seismic reflection data","authors":"O. Atgin, G. Çifçi","doi":"10.19111/bulletinofmre.1411403","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1411403","url":null,"abstract":"In 2012, a comprehensive study of the Danube River’s submarine channels continental slope was conducted, employing multi-beam bathymetry and over 2300 km of high-resolution two- dimensional seismic reflection data. The investigation aimed to delve into the area's morphology, potential for gas hydrate presence, and the correlation between stratigraphic units and gas hydrates. Three distinct zones, revealed Bottom Simulating Reflectors (BSRs) indicating the base of gas hydrate accumulations in the seismic data. These BSR areas exhibited Type-1 reflections, characterized by continuous cuts across layers. Notably, five discrete levels of BSRs were detected, suggesting a consistent gas composition across them. The multiple BSR formations are attributed to higher sedimentation rates relative to gas hydrate dissolution rates. Mass transport deposits (MTDs) within the gas hydrate stability zone (6 in total) were identified; their highly consolidated nature could account for the absence of gas hydrates within them. Additionally, one MTD displayed elevated heat flow measurements, indicating a higher geothermal gradient, likely due to its relatively high thermal conductivity. This disparity in thermal properties explains the deeper-than-expected BSR in this specific region, as it forms at a lower temperature equilibrium level due to efficient heat conduction.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":"6 13","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139148671","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

Porphyry and Epithermal Au-Cu Systems of the Southern Caucasus and Northern Iran 南高加索和伊朗北部的斑岩和成矿金-铜系统

IF 0.5

Bulletin of the Mineral Research and Exploration Pub Date : 2023-11-20 DOI: 10.19111/bulletinofmre.1394073

Alexander G. Tvalchrelidze

{"title":"Porphyry and Epithermal Au-Cu Systems of the Southern Caucasus and Northern Iran","authors":"Alexander G. Tvalchrelidze","doi":"10.19111/bulletinofmre.1394073","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1394073","url":null,"abstract":"This article presents tangible geological evidence for coexistence of porphyry copper and epithermal gold systems within single polygenic deposits and provides a paleothermophysical model for their origins. Brief metallogenic analysis of the Southern Caucasus and Northern Iran has shown that such deposits are confined to long-living calc-alkaline island arcs and were formed during their orogenesis. Examples of complex Sonajil (Iran), Gharta, and Merisi (Georgia) deposits are considered. Investigation has shown that for combined porphyry and epithermal ore formation some preconditions are suggested to exist: (i) Source of anomalous energy, which exceeds thermodynamics of the enclosing environment; (ii) Existence of temperature gradient, which determines conventional flows of fluids composed of endogenous and meteoric constituents (proven by rhythmical zoning of ore lodes); (iii) Stability of such conditions for a period of sulfide ore formation. However, such a process of sulfide ore formation cannot explain formation of high sulfidation gold deposits. Mass precipitation of free gold requires phreatic collapse in the ore conduit channel already after formation of hydrothermally altered rocks, and this event results in creation of either hydrothermal breccias, often with jigsaw-fit texture or brecciated vuggy silica where host rocks and hydrothermally altered rocks are cemented by a gold-bearing quartz matrix.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":"93 4","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139254668","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

Edge enhancement of potential field data using the enhanced gradient (EG) filter 利用增强梯度(EG)滤波器对势场数据进行边缘增强

Bulletin of the Mineral Research and Exploration Pub Date : 2023-11-05 DOI: 10.19111/bulletinofmre.1386653

Hazel DENİZ TOKTAY

{"title":"Edge enhancement of potential field data using the enhanced gradient (EG) filter","authors":"Hazel DENİZ TOKTAY","doi":"10.19111/bulletinofmre.1386653","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1386653","url":null,"abstract":"Potential field data play a critical role in interpreting various geologic structural features through edge detection filters that aid in mapping subsurface structural features. For this purpose, various filters have been introduced in recent years to determine lateral boundaries. However, each of these filters has its limitations and advantages. This study presents a new edge enhancement filter named “Enhanced Gradient (EG)” based on the Richards function and applies it to potential field data for structural mapping. The EG is tested on two dimensional (2D) and three dimensional (3D) synthetic magnetic models with sources buried at different depths and variable properties. The results from the EG filter provide more accurate and higher resolution horizontal boundaries and can avoid creating the false edges in the output results. In addition, the proposed filter was examined using aeromagnetic data from the Indiana region in the USA. The primary and secondary faults and geological formations are recognizable in the EG image. The results of the EG map will allow us to improve the qualitative interpretation of potential field anomalies in studying the structural and tectonic geology of the Indiana region in the USA.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":"109 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135726213","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

Determination of Atterberg Limits using the vane shear test method 用叶片剪切试验法测定阿特伯格极限

Bulletin of the Mineral Research and Exploration Pub Date : 2023-09-11 DOI: 10.19111/bulletinofmre.1362349

Kamil KAYABALI, H.b. NAGARAJ, Deniz YILMAZ, Muhammed BEYHAN

{"title":"Determination of Atterberg Limits using the vane shear test method","authors":"Kamil KAYABALI, H.b. NAGARAJ, Deniz YILMAZ, Muhammed BEYHAN","doi":"10.19111/bulletinofmre.1362349","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1362349","url":null,"abstract":"Atterberg limits are important index parameters used to classify soils for various engineering applications. Engineering properties of soils are predicted through simple correlations with index properties and thereby the engineering behavior of soils are qualitatively assessed. There are two popular methods of determining liquid limit, and plastic limit is commonly determined adopting rolling thread methods. To avoid operator related variations in determining plastic limit by conventional method, some researchers have explored using cone method as an alternative. However, there is no consensus about the depth of penetration to reckon the end of plastic state. Though various other test methods have been developed to determine plastic limit (like roll plate device), cone penetration with its limitation of determining plastic limit, is the only method to determine both liquid and plastic limit of soils. Since laboratory vane shear test is a simple and reliable method of determining undrained strength of fine-grained soils, the authors have explored to determine both liquid and plastic limits through correlations developed between undrained strength and water content over a range of consistencies between liquid and plastic states. This would eliminate determining liquid and plastic limit separately without sacrificing the reliability of results.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136025872","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

Fossil fuels, climate change, and the vital role of CO2 to people and plants on planet Earth 化石燃料、气候变化以及二氧化碳对地球上的人类和植物的重要作用

IF 0.5

Bulletin of the Mineral Research and Exploration Pub Date : 2023-07-24 DOI: 10.19111/bulletinofmre.1349959

G. Shanmugam

{"title":"Fossil fuels, climate change, and the vital role of CO2 to people and plants on planet Earth","authors":"G. Shanmugam","doi":"10.19111/bulletinofmre.1349959","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1349959","url":null,"abstract":"A rigorous examination of empirical data confirms the fact that there is no threat from CO2 to People. Fossil Fuels (i.e., Oil, Natural Gas, and Coal) are the underpinning of modern living in the 21stcentury and that CO2 is essential for the thriving of both People and Plants. The geologic record shows that the Earth’s climate has always been changing naturally during the past 600 million years in terms CO2 and temperature, without CO2 emissions from Fossil Fuels by humans. Aplot of CO2vs. Temperature for the last 600 million years shows basically no correlation for most of this time (Berner, 2004; Scotese et al., 2021). If the Net-Zero CO2 policy were to be implemented in 2050, large numbers of people would die and the modern human civilization would come to a sudden halt, and humans left alive would have to revert back to the lifestyles of the Neanderthals. A climate-change model for 200 years (1900─2100) is proposed based on four basic parameters, namely, CO2, Temperature, Population, and GDP (gross domestic product) per capita. In this model, calculations based on the Max Planck’s Curve by Van Wijngaarden and Happer (2020), an increase in Temperature by 2100 would be trivial even if CO2 is nearly doubled in value to 800 ppm. The CO2 in the atmosphere helps not only to modulate the Earth’s Temperature suitable for human survival, but also to enhance Global Greening.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44474381","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

Structural relationship between subsurface oil fields in the North Dezful Embayment: Qaleh Nar, Lower and Upper Balarud Anticlines (central Zagros, Iran) 北Dezful堤岸地下油田之间的结构关系：Qaleh Nar、Lower和Upper Balarud背斜（伊朗扎格罗斯中部）

IF 0.5

Bulletin of the Mineral Research and Exploration Pub Date : 2023-07-23 DOI: 10.19111/bulletinofmre.1344433

R. RAZAVİ PASH, M. Seraj, S. Mukherjee, Ahmad Radmehr

{"title":"Structural relationship between subsurface oil fields in the North Dezful Embayment: Qaleh Nar, Lower and Upper Balarud Anticlines (central Zagros, Iran)","authors":"R. RAZAVİ PASH, M. Seraj, S. Mukherjee, Ahmad Radmehr","doi":"10.19111/bulletinofmre.1344433","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1344433","url":null,"abstract":"How subsurface anticlines (oil fields) link structurally with faults is of great relevance in the exploration and development of oil fields. In this context, we investigate the geometric relation between lower Balarud (LBR), upper Balarud (UBR) and Qaleh Nar (QN) subsurface anticlines that are the main oil fields in the Northern Dezful Embayment, central Zagros. The Asmari (As) and the Bangestan (Bng) reservoirs are studied geophysically using seismic profiles, well data and underground contour maps (UGC). Interpretation of 3500 m deep seismic profiles indicates the geometry of the studied subsurface anticlines differs vertically and horizontally to a significant proportion. The interpreted structures much resemble As and Bng horizons in each anticline. The UBR got overturned on the LBR due to thrusting possibly in the Late Miocene. The LBR, like a rabbit-ear structure, is situated at the northern edge of the QN. The lower and upper Chenareh and LBR and UBR resemble structurally and are separated mutually by a steep (strike-slip) fault. The fault separates the LBR and UBR from the QN. Interaction of different factors: change in overburden pressure, rate of deformation and uplift in the different parts of the subsurface anticlines moved and accumulated Gachsaran Formation \u0000towards both limbs of the anticlines.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48667066","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

Determination of the relationship between tectonic and karstification using morphometric indices in Bozburun Peninsula, Marmaris, Türkiye 使用形态计量指数确定土耳其马尔马里斯Bozburun半岛构造与岩溶作用之间的关系

IF 0.5

Bulletin of the Mineral Research and Exploration Pub Date : 2023-07-19 DOI: 10.19111/bulletinofmre.1329619

İsmail Ege, Efekan Özkan, Selahattin Polat

{"title":"Determination of the relationship between tectonic and karstification using morphometric indices in Bozburun Peninsula, Marmaris, Türkiye","authors":"İsmail Ege, Efekan Özkan, Selahattin Polat","doi":"10.19111/bulletinofmre.1329619","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1329619","url":null,"abstract":"Bozburun Peninsula (Marmaris) attracts attention because it contains various karstic shapes on limestones belonging to different periods and it is also an important area in terms of tectonic activity. This study examines the area sizes of the karstic shapes determined by satellite images, topographic maps and field studies, the elevations, slopes, depth value ranges and extensions where they are clustered and the fault lines affecting them have been determined. In order to explain this effect quantitatively, the elongation ratio (RE) and elongation direction (EA α) from morphometric shape indices were used. Poljes, on the other hand, were evaluated in more detail separately from dolines and uvalas, the pitting rates (PR) was calculated. It was understood that in this study which Remote Sensing (RS), Geographic Information System (GIS) technologies and field observations were correlated, folds and fractures that occurred in the Western Taurus Karst Region during the paleotectonic and neotectonic periods had a positive effect on karstification, and it was determined the lie of the karstic shapes to a great extent resemblance to the lie of the faults.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45847688","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

Geothermal Power Corridor- connecting the Middle East Countries 地热能走廊——连接中东国家

IF 0.5

Bulletin of the Mineral Research and Exploration Pub Date : 2023-06-20 DOI: 10.19111/bulletinofmre.1317427

D. Chandrasekharam

引用次数: 0

Importance of reinjection in sustainability of geothermal resources and reinjection well locations in Türkiye 回注对土耳其地热资源和回注井位置可持续性的重要性

IF 0.5

Bulletin of the Mineral Research and Exploration Pub Date : 2023-06-19 DOI: 10.19111/bulletinofmre.1316785

Nilgün Doğdu, Oktay Çelmen

{"title":"Importance of reinjection in sustainability of geothermal resources and reinjection well locations in Türkiye","authors":"Nilgün Doğdu, Oktay Çelmen","doi":"10.19111/bulletinofmre.1316785","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1316785","url":null,"abstract":"Sustainability of geothermal energy is related with the type of geothermal resources (natural springs, well), usage situations (thermal, residential-greenhouse heating, energy, etc.), amount of use (optimal flow, appropriate pressure-temperature changes), conservation of resources, and is mostly achieved by reinjection of the geothermal fluid returning from usage. It is important to take measures to prevent adverse changes in temperature and pressure conditions in the reservoir to properly remove the fluid returning from use in geothermal areas from the environment and recharge the reservoir. Reinjection should be carried out under appropriate conditions for the protection of resources. In the operation of geothermal resources, reinjection/discharge conditions and obligations are also specified in the provisions of the Law No. 5686 and the implementing regulation. Various studies within the scope of exploration activities in geothermal fields, determining the production-reinjection areas and determination the location of the reinjection wells in conditions that will not adversely affect the production","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48234066","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

Evaluation of radioactive properties and microfaunal evidence in the Bosphorus and the Dardanelles straits and Golden Horn sediments 博斯普鲁斯海峡、达达尼尔海峡和金角湾沉积物放射性特性和微型动物证据的评估

IF 0.5

Bulletin of the Mineral Research and Exploration Pub Date : 2023-06-16 DOI: 10.19111/bulletinofmre.1315735

I. Barut, E. Meriç, A. Nazik, Feyza Di̇nçer, E. Kam, Mustafa Eryilmaz

{"title":"Evaluation of radioactive properties and microfaunal evidence in the Bosphorus and the Dardanelles straits and Golden Horn sediments","authors":"I. Barut, E. Meriç, A. Nazik, Feyza Di̇nçer, E. Kam, Mustafa Eryilmaz","doi":"10.19111/bulletinofmre.1315735","DOIUrl":"https://doi.org/10.19111/bulletinofmre.1315735","url":null,"abstract":"The aim of this study is to investigate radioactive pollutants from pollution loads transported from the Black Sea to the Aegean Sea by the Turkish Straits System and their effects on microfauna (benthic foraminifer and ostracod) assemblages. In the study, the effects of gross alpha and beta activity on the species number, species diversity, dominant species and species richness of benthic foraminiferal and ostracod assemblages were investigated in 16 bottom sediments taken from different depths in the Golden Horn, Bosphorus and Dardanelles straits. In the studied sediment samples examined 61 genera and 64 species of benthic foraminifera, 23 genera and 26 species of ostracoda were identified. In addition two migratory foraminifera species were observed as Spiroloculina antillarum of Atlantic-Pacific origin and Peneroplis pertusus of Indo-Pacific origin. A relationship between the abundance of microfauna and high gross alpha and beta values was found in the Dardanelles samples, but not in the Bosphorus and Golden Horn samples. In this study, the highest radioactivity value was observed in the deepest bottom sediment samples. Consequently, the gross alpha and beta values were seen to be close to each other in the Dardanelles Strait and Golden Horn samples, and they had a broad-spectrum in the Bosphorus samples.","PeriodicalId":42748,"journal":{"name":"Bulletin of the Mineral Research and Exploration","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46003213","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