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- Eastern Pontides (2)
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- Fault Zone Waves (1)
- Foid Syenite (1)
- Ganos Fault (1)
Articles 1 - 20 of 20
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Stratigraphy Of The Metamorphic Rocks Of Niğde Massif And New Evidence Of Triassic Rifting Of The Inner Tauride Ocean (Central Anatolia, Türkiye), Mustafa Kemal Özkan, Metin Beyazpi̇ri̇nç, Ali Ekber Akçay, Muhamed Çoban, Osman Candan, Osman Ersin Koralay, Meftun Kerem Sönmez, Halil Yusufoğlu
Stratigraphy Of The Metamorphic Rocks Of Niğde Massif And New Evidence Of Triassic Rifting Of The Inner Tauride Ocean (Central Anatolia, Türkiye), Mustafa Kemal Özkan, Metin Beyazpi̇ri̇nç, Ali Ekber Akçay, Muhamed Çoban, Osman Candan, Osman Ersin Koralay, Meftun Kerem Sönmez, Halil Yusufoğlu
Bulletin of the Mineral Research and Exploration
Metamorphites of Niğde Massif, which form the basis of the study area covering the Niğde vicinity in Central Anatolia, are composed of Late Devonian Gümüşler, Carboniferous-early Permian Kaleboynu late Permian Kızıldağ formation and unconformable Triassic-Late Cretaceous cover units from bottom to the top, which are separated from each other with unconformities. The Triassic succession (Söğütlüdere formation) of phyllite-marble-schist alternations with common amphibolite levels is first distinguished in this study, unconformably overlies the Paleozoic succession. Thick homogeneous marbles of Jurassic-Cretaceous period, is defined by quartzite at the bottom representing the unconformity at the base, is defined as the Kırtepe formation. The …
Production Of Rare-Earth Oxides From Eskişehir-Beylikova Complex Ores, Haydar Güneş, Hüseyin Eren Obuz, Hasan Akçay, Çiğdem Kara, Ayşe Erdem
Production Of Rare-Earth Oxides From Eskişehir-Beylikova Complex Ores, Haydar Güneş, Hüseyin Eren Obuz, Hasan Akçay, Çiğdem Kara, Ayşe Erdem
Bulletin of the Mineral Research and Exploration
In this study, the production technology of barite, fluorite, rare-earth elements, and thorium-bearing rare-earth oxides from the Eskişehir-Beylikova were investigated, and the processes that can be used in the production of thorium-free mixed rare earth oxides were tested. The applied processes are roasting, leaching, solvent extraction and precipitation methods, respectively. After all studies, the optimum roasting temperature and roasting duration are determined as 600 °C and 1 hour. In the extraction stage, the highest leaching efficiency is achieved with 5 M HCl, 1-hour leaching duration, 1/3 solid/liquid ratio and 35 °C leaching temperature. While methyl tri C8-C10 ammonium chloride (Adogen …
Paleoecological Investigation Of The Miocene (23.03-5.33 Mya) Rodents (Mammalia: Rodentia) In Anatolia, Hasan Vural, Şakir Önder Özkurt
Paleoecological Investigation Of The Miocene (23.03-5.33 Mya) Rodents (Mammalia: Rodentia) In Anatolia, Hasan Vural, Şakir Önder Özkurt
Bulletin of the Mineral Research and Exploration
Anatolia’s geographical location as a land bridge between Europe, Asia, and Africa, makes it an important passage for mammal migrations, with a rich fossil potential. However, detailed scientific studies on the Neogene paleogeography of Anatolia are scarce. Rodentia is among the major mammal groups generally adapting to different habitat types and rapidly evolving with the changing geography. Investigating this group provides data to increase the accuracy of ecological analyses. We selected Rodentia fossils from the Miocene excavation sites with published papers, and examined specimens of 14 families from 106 localities. Cricetidae, Muridae, Gliridae, and Sciuridae were found to be most …
Magnetic Anisotropy Of A Sub-Ophiolitic Metamorphic Sole (Mersin Ophiolite, Türkiye), Buğra Çavdar, Antony Morris, Mark Anderson, Luca Menegon, Osman Parlak
Magnetic Anisotropy Of A Sub-Ophiolitic Metamorphic Sole (Mersin Ophiolite, Türkiye), Buğra Çavdar, Antony Morris, Mark Anderson, Luca Menegon, Osman Parlak
Bulletin of the Mineral Research and Exploration
The Mersin ophiolite of southern Turkey is a well-exposed, Late Cretaceous, Neo-Tethyan suprasubduction
zone ophiolite. It is underlain by metamorphic sole rocks inferred to have formed at the top of a down-going plate during subduction. These have a well-developed foliation and lineation observable in the field (defined by the preferred orientations of hornblende and plagioclase crystals). Here we present the first magnetic fabric data reported from the Mersin ophiolite with such settings. Anisotropy of low field magnetic susceptibility ellipsoids in sampled amphibolites have clustered, NW-plunging minimum principal axes representing poles to a SE-dipping magnetic foliation that aligns with the macroscopic …
The Importance Of Confocal Raman Spectroscopy And Mineral Chemistry Studies In The Magma Crystallization Processes: Strandja Intrusives, Nw Türkiye, Ezgi Ulusoy, Yusuf Kağan Kadioğlu
The Importance Of Confocal Raman Spectroscopy And Mineral Chemistry Studies In The Magma Crystallization Processes: Strandja Intrusives, Nw Türkiye, Ezgi Ulusoy, Yusuf Kağan Kadioğlu
Bulletin of the Mineral Research and Exploration
The Strandja Massif cropping out in NW Turkey is cut by Late Cretaceous intrusives. These are called Strandja Intrusives and they are felsic and mafic coeval intrusives. Felsic intrusives consist of granite, granodiorite, quartz monzonite and syenite, while mafic intrusives consist of diorite and gabbro composition. Main composition of felsic intrusives consists of quartz, alkali feldspar, plagioclase, biotite, amphibole ±pyroxene mineral association, while main composition of mafic ones consists of plagioclase, biotite, amphibole ±pyroxene ±olivine mineral association. Amphiboles hydrated double-chain mineral of the Strandja Intrusives observed in all rocks used as an index mineral in this study to understand the …
Determination Of The Coal-Bearing Zones And The Alteration Zones Containing Uranium Ore By Using Two Dimensional (2d) Seismic Reflection Method In Thrace Basin, Sinem Aykaç, Abdullah Gürer, İmam Çeli̇k, Batuğhan Yikmaz, Erdoğan Eryilmaz, Erdi Apatay, Sami Aytaç Özdemi̇r, Sermet Gündüz, Tuğçe Can, Esra Ak, Erdener Izladi, Salih Erden, Zeynep Rezzan Özerk, Recep Güney, Esra Burcu Köse, Büşra Bihter Demi̇rci̇
Determination Of The Coal-Bearing Zones And The Alteration Zones Containing Uranium Ore By Using Two Dimensional (2d) Seismic Reflection Method In Thrace Basin, Sinem Aykaç, Abdullah Gürer, İmam Çeli̇k, Batuğhan Yikmaz, Erdoğan Eryilmaz, Erdi Apatay, Sami Aytaç Özdemi̇r, Sermet Gündüz, Tuğçe Can, Esra Ak, Erdener Izladi, Salih Erden, Zeynep Rezzan Özerk, Recep Güney, Esra Burcu Köse, Büşra Bihter Demi̇rci̇
Bulletin of the Mineral Research and Exploration
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 two dimensional (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 three dimensional (3D) figures. Moreover, coal …
Gis-Based Analytical Hierarchy Process, Weight Of Evidence And Logistic Regression Models For The Landslide Susceptibility Predicting In Echorfa Region (Northwestern Of Algeria), Zine El Abidine Roukh, Abdelmansour Nadji
Gis-Based Analytical Hierarchy Process, Weight Of Evidence And Logistic Regression Models For The Landslide Susceptibility Predicting In Echorfa Region (Northwestern Of Algeria), Zine El Abidine Roukh, Abdelmansour Nadji
Bulletin of the Mineral Research and Exploration
The main objective of this study is destined to combine the Analytical Hierarchy Process (AHP), Weight of Evidence (WOE), Logistic Regression (LR) methods and geographic information system (GIS) to predict landslide susceptibility of the Echorfa region (northwestern of Algeria). Nine factors such as slope, aspect, lithology, distance to faults, lineaments density, distance to the streams, precipitations, land use and altitude are included in landslide susceptibility evaluation process. A detailed landslide inventory map was established by satellite images and filed surveys. Three landslide susceptibility maps are established using the different statistical models. Five landslide susceptibility categories are generated by the GSI …
Evaluation Of Recent Earthquake Activity Along The Ganos Fault: Mongan Network Test Analysis, Eşref Yalçinkaya, Marco Bohnhoff, Ethem Görgün, Hakan Alp, Stephan Bentz, Ali Pinar, Fatih Alver, Ömer Kiliçarslan, Burçin Didem Tamtaş, Burçak Görgün
Evaluation Of Recent Earthquake Activity Along The Ganos Fault: Mongan Network Test Analysis, Eşref Yalçinkaya, Marco Bohnhoff, Ethem Görgün, Hakan Alp, Stephan Bentz, Ali Pinar, Fatih Alver, Ömer Kiliçarslan, Burçin Didem Tamtaş, Burçak Görgün
Bulletin of the Mineral Research and Exploration
The Monitoring of the Ganos Fault data presents significant opportunities and challenges for earthquake detection, location and magnitude calculations, source mechanism solutions, and discovery of fault zone waves. This study indicates mostly of preliminary data analysis and seismological evaluations. While narrow distance aperture installation has an opportunity to detect microearthquakes, it also causes significant difficulties in determining the source parameters of micro-earthquakes. Extracting microearthquakes from continuous data shows that special strategies need to be used. MONGAN data revealed the presence of many earthquakes with magnitude M<1.0 in the study region. These earthquakes are mostly out of network earthquakes and it is very difficult to obtain reliable solutions due to the insufficient azimuthal distribution of the stations. It is obvious that different network techniques and wave particle motion analyzes are contributed to the location and source parameters. Although the fault zone structure consists of two different lithologies that make significant differences in seismic wave phase arrival times and wave amplitudes, we observe fault zone head waves on both sides along the Ganos fault. Moment tensor analyzes depict that reliable source mechanism solutions can be obtained using a small number of station records.
A New Look At The Origin Of N-S Trending Young Basins Of Western Anatolia, Ömer Feyzi Gürer
A New Look At The Origin Of N-S Trending Young Basins Of Western Anatolia, Ömer Feyzi Gürer
Bulletin of the Mineral Research and Exploration
In the western Anatolia, the tectonic regime transitioned from crustal shortening to extension during Late Cenozoic time and evidence of this event was imprinted on basement lithologies and N-S and E-W oriented two distinct basin sub-types. Here, we examined the exhumation mechanism of the Menderes massif that forms the basement of these basins from a different perspective. The N-S oriented basins overlying different basement rock types were re-evaluated based on new evidence that has potential to put new constrains for interpreting the tectonic evolution of the area. Unroofing of the Menderes Massif must have developed due to compressional core complex. …
Evaporate Salt Exploration By Two Dimensional (2d) Seismic Reflection Method: Ankara- Polatlı Region, Türkiye, Recep Güney, Zeynep Rezzan Özerk, Erdener Izladi, Salih Erden, Esra Ak, Erdi Apatay, Erdoğan Eryilmaz, Batuğhan Yikmaz, Sami Aytaç Özdemi̇r, Sermet Gündüz, Tuğçe Can, İmam Çeli̇k, Abdullah Gürer, Sinem Aykaç, Muzaffer Özgü Arisoy, Esra Burcu Köse, Büşra Bihter Demi̇rci̇
Evaporate Salt Exploration By Two Dimensional (2d) Seismic Reflection Method: Ankara- Polatlı Region, Türkiye, Recep Güney, Zeynep Rezzan Özerk, Erdener Izladi, Salih Erden, Esra Ak, Erdi Apatay, Erdoğan Eryilmaz, Batuğhan Yikmaz, Sami Aytaç Özdemi̇r, Sermet Gündüz, Tuğçe Can, İmam Çeli̇k, Abdullah Gürer, Sinem Aykaç, Muzaffer Özgü Arisoy, Esra Burcu Köse, Büşra Bihter Demi̇rci̇
Bulletin of the Mineral Research and Exploration
The presence of the evaporate salt zone in Ankara-Polatlı region has been determined by the drillings. It is thought to be the largest reserve in Türkiye. The seismic reflection method was used to determine the top-bottom levels of the zone; its depth; its thickness and extent boundaries; the horstgraben 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 …
Highly Siderophile Element And Osmium Isotope Systematics Of Basaltic Volcanics: A Different Approach To Petrological Processes, Mehmet Arslan, İrfan Temi̇zel, Emel Abdi̇oğlu Yazar, Bahrican Ar, Cem Yücel
Highly Siderophile Element And Osmium Isotope Systematics Of Basaltic Volcanics: A Different Approach To Petrological Processes, Mehmet Arslan, İrfan Temi̇zel, Emel Abdi̇oğlu Yazar, Bahrican Ar, Cem Yücel
Bulletin of the Mineral Research and Exploration
The highly siderophile element (HSE) or platinum group element (PGE) and Os isotope systematics of basaltic volcanics have recently received a significant attention because of their potential to constrain the petrological processes on magma generation and evolution. The HSE and Os isotope data, which are generally observed at very low concentrations in basalts and obtained by modern enrichment and analytical techniques, are frequently used in petrological studies. The HSE contents and ratios from whole-rock analysis of basalts, and combined evaluation with the theoretical knowledge and modelling of HSE behaviour during the partial melting of mantle and the differentiation of basaltic …
The Distribution Of Elements In The Alteration Of Feldspatic Minerals, Kıymet Deni̇z, Yusuf Kağan Kadioğlu, Tamer Koralay, Bahattin Güllü
The Distribution Of Elements In The Alteration Of Feldspatic Minerals, Kıymet Deni̇z, Yusuf Kağan Kadioğlu, Tamer Koralay, Bahattin Güllü
Bulletin of the Mineral Research and Exploration
Feldspar (alkali feldspar and plagioclases) and in recent years feldspathoid minerals are used as raw materials in the ceramic-glass industries. The igneous rocks such as granite, syenite and foid syenite which mainly contain these minerals have the potential to be raw materials. Some inclusions within the feldspatic minerals affect extremely negatively the desired values for raw material. In this study, the effective processes in the alteration of feldspatic minerals within the Özvatan foid syenites, the effects of alteration minerals in the raw material were evaluated and the effects of the elements released by alteration on the environment were revealed. The …
The Effect Of Structural Properties Of Ankara Clay On The Electrokinetic Properties, Güzide Kalyoncu Ergüler
The Effect Of Structural Properties Of Ankara Clay On The Electrokinetic Properties, Güzide Kalyoncu Ergüler
Bulletin of the Mineral Research and Exploration
The aim of this study is to investigate the effect of structural properties of soil known as Ankara clay, which contains different properties, on its electrokinetic behavior. For this purpose, the 8 disturbed samples from Ankara clay were collected from the different locations of Yüzüncüyıl and Karakusunlar areas, which were observed to contain no excess gravel and carbonate concretions. The electrokinetic behavior of these collected samples were evaluated by using the results of plastic limit, liquid limit, methylene blue, swelling, XRD, XRF, SEM, EDS and BET measurements and analyses as well as zeta potential tests. By these experimental studies, it …
Emplacement Conditions Of Magma(S) Forming Jurassic Plutonic Rocks In Gümüşhane (Eastern Pontides, Turkey), Emre Aydinçakir, Ramazan Gündüz, Cem Yücel
Emplacement Conditions Of Magma(S) Forming Jurassic Plutonic Rocks In Gümüşhane (Eastern Pontides, Turkey), Emre Aydinçakir, Ramazan Gündüz, Cem Yücel
Bulletin of the Mineral Research and Exploration
In this study, the petrography, mineral chemistry and crystallization conditions were reported for the Alemdar and Işıkdere plutons located in limited areas in the south of the Eastern Pontides. These plutons, which trend mostly in NE-SW directions, were emplaced by cutting the Early- Middle Carboniferous-aged Gümüşhane Granitoid and Early-Middle Jurassic Şenköy formation. Petrographically, the studied plutons are compositionally fine to medium grained quartz-diorite, quartz monzodiorite and tonalite. The rocks in the plutons have granular, poikilitic, monzonitic, graphic and rare porphyritic textures with consist of plagioclase, (An05-92), hornblende (Mg# = 0.52- 0.81), biotite (Mg# = 0.32-0.67), orthoclase, quartz and Fe-Ti oxide. …
Hydro-Chemical And Isotopic Investigation Of The İspendere Mineral And Thermal Water Springs, Malatya, Turkey, Murat Çeliker, Ömer Faruk Dursun, Mahmut Fırat
Hydro-Chemical And Isotopic Investigation Of The İspendere Mineral And Thermal Water Springs, Malatya, Turkey, Murat Çeliker, Ömer Faruk Dursun, Mahmut Fırat
Bulletin of the Mineral Research and Exploration
The objective of this study is to determine the source, chemical characteristics and isotopic components of the İspendere mineral and thermal waters, Malatya, Turkey. There are many mineral and thermal water springs in the area with flow rates ranging between 0.01 – 0.4 l/s. Geochemical and isotope chemistry studies were carried out at three different thermal springs in the region as well as three different cold water springs during May-October 2011. The temperature of mineral and thermal waters were measured as between 21.1°C – 23.6°C in May 2011 and as 20.8°C in October 2011. The region was determined as a …
Petrography, Mineral Chemıstry And Crystallizatıon Conditions Of Cenozoic Plutonic Rocks Located To The North Of Bayburt (Eastern Pontıdes, Turkey), Abdullah Kaygusuz, Cem Yucel, Mehmet Arslan, Ferkan Sipahi, Irfan Temizel, Gokhan Cakmak, Z. Samet Guluglu
Petrography, Mineral Chemıstry And Crystallizatıon Conditions Of Cenozoic Plutonic Rocks Located To The North Of Bayburt (Eastern Pontıdes, Turkey), Abdullah Kaygusuz, Cem Yucel, Mehmet Arslan, Ferkan Sipahi, Irfan Temizel, Gokhan Cakmak, Z. Samet Guluglu
Bulletin of the Mineral Research and Exploration
The Eastern Pontides comprises of many intrusive bodies varying in composition, size and age from Paleozoic to Cenozoic. Those of especially Cenozoic aged ones are commonly observed in the southern part while are rarely exposed in the northern part of the Eastern Pontides. In this study, the petrographical and mineral chemistry properties of Çiçekli, Somarova, Sorkunlu, Şaşurluk, Aydıntepe, Kemerlikdağı and Pelitli plutons located to the north of Bayburt area are determined, and the crystallization conditions of the studied bodies were estimated by means of thermobarometer calculations. The studied plutons extend mostly NE-SW directions and are approximately ellipse in shapes. The …
Geochemical Characteristics And Rare-Earth Element Distributions Of Kozbudaklar W-Skarn Deposit (Bursa, Western Anatolia), Ayşe Orhan, Halim Mutlu
Geochemical Characteristics And Rare-Earth Element Distributions Of Kozbudaklar W-Skarn Deposit (Bursa, Western Anatolia), Ayşe Orhan, Halim Mutlu
Bulletin of the Mineral Research and Exploration
The Kozbudaklar W-skarn deposit occurs along the contact between Eocene Topuk Granitoid and Triassic İnönü Marble in Tavşanlı Zone. In the study area, the endoskarn is represented by plagioclase-pyroxene and exoskarn zone which is characterized by pyroxene, pyroxene-garnet, garnet and garnet-pyroxene skarn facies. According to major oxide element contents, exoskarn is of calcic character. In pyroxene and pyroxene-garnet skarn facies, tungsten and molybdenum abundances vary between 434-5507 ppm (mean 2330 ppm) and 8 - 90 ppm (mean 40 ppm). In the garnet and garnet-pyroxene skarns, concentrations of these elements are 271 - 7616 ppm (mean 2486 ppm) and 7 - …
Diagenetic History Of The Rock Units Of Bozkir Unit Controlled By The Triassic Rifting, Bozkir-Konya, Hüseyin Yalçin, Ömer Bozkaya, Mine Takçi
Diagenetic History Of The Rock Units Of Bozkir Unit Controlled By The Triassic Rifting, Bozkir-Konya, Hüseyin Yalçin, Ömer Bozkaya, Mine Takçi
Bulletin of the Mineral Research and Exploration
The Bozkır Unit representing the northern edge of the Taurus Belt. It comprises from bottom to top, three distinct structural entities: the Upper Triassic pre-rift (Korualan Group), the Upper Triassic-Upper Cretaceous syn-rift (Huğlu Group) and the Jurassic-Cretaceous Boyalı Tepe Group as to their structural settings. The Korualan Group is represented by the alternations of carbonate (limestone, dolomitic limestone, dolomite) with radiolarite and chert intercalations and clastic rocks (sandstone, siltstone, mudstone, shale). The Huğlu Group is made up of volcanic (basalt, andesite) and pyroclastic (tuffaceous sandstone) rocks including radyolarite, limestone and clastic rock (sandstone, siltstone, shale) intercalations. The Boyalı Tepe Group …
Differentiation Processes İn Late Cretaceous Ultrapotassic Volcanics Around Amasya, Fatma Gülmez, Ş. Can Genç
Differentiation Processes İn Late Cretaceous Ultrapotassic Volcanics Around Amasya, Fatma Gülmez, Ş. Can Genç
Bulletin of the Mineral Research and Exploration
Late Cretaceous lithologies around Amasya region are represented by Pontide fore-arc basin units which corresponds a volcanoclastic sequence. This sequence has the products of alkaline ultrapotassic magmatism accompanying calcalkaline lavas which are abundant along Pontide arc. The ultrapotassic rocks which are classified as leucitite, minette and trachyte based on their mineralogical composition, occur as dikes, stocks and rarely lava flows as to be comprised by the Late Cretaceous Volcanoclastic Succession (LCVS). Fractional crytallization accompanied by assimilation (AFC) is a low pressure processes able to differentiate ultrapotassic parental melts to various compositions in a continental margin tectonic setting.The trachytes are the …
An Example To Sepiolite Formation In Volcanic Belts By Hydrothermal Alteration: Kibriscik (Bolu) Sepiolite Occurrence, Taner Irkeç, Taner Ünlü
An Example To Sepiolite Formation In Volcanic Belts By Hydrothermal Alteration: Kibriscik (Bolu) Sepiolite Occurrence, Taner Irkeç, Taner Ünlü
Bulletin of the Mineral Research and Exploration
Geological, mineralogical and chemical properties of a sepiolite occurrence, located in the south of Kıbrıscık township of Bolu Province, north central Turkey, have been investigated in detail, and new mineralogical data have been obtained. Differing from the sedimentary sepiolite deposits, mostly associated with the carbonate/evaporite sequences, Kıbrıscık sepiolite occurs in the Köroğlu (Gallatian) Volcanic Belt and has formed by the hydrothermal alteration of the vitric tuff unit of Middle Miocene aged Deveören Volcanites. The mineral, which shows a similar XRD pattern to sepiolite, gives DTA and IR patterns with close resemblance to those of palygorskite, in addition to its chemical …