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Articles 1 - 21 of 21
Full-Text Articles in Physical Sciences and Mathematics
Late Cenozoic Extensional Tectonics In Western Anatolia: Exhumation Of The Menderes Core Complex And Formation Of Related Basins, Gurol Seyitoglu, Veysel Isik
Late Cenozoic Extensional Tectonics In Western Anatolia: Exhumation Of The Menderes Core Complex And Formation Of Related Basins, Gurol Seyitoglu, Veysel Isik
Bulletin of the Mineral Research and Exploration
The Aegean region (Western Anatolia, Aegean Sea and Greece) is one of the areas of the earth under the effect of extensional tectonics and includes the typical features of core complexes in this type of region. The Menderes Massif in Western Anatolia was exhumed initially as an asymmetric core complex in the Early Miocene due to extension beginning in the Oligocene and then the central Menderes Massif was further exhumed as a symmetric core complex. This article discusses the exhumation mechanisms of the Menderes Massif and development of surrounding sedimentary basins in light of new findings. The proposed model successfully …
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 …
Late Pleistocene Glaciations And Paleoclimate Of Turkey, Mehmet Akif Sarikaya, Atilla Çi̇ner
Late Pleistocene Glaciations And Paleoclimate Of Turkey, Mehmet Akif Sarikaya, Atilla Çi̇ner
Bulletin of the Mineral Research and Exploration
Glaciers respond quickly to climatic changes and thus they are considered to be very accurate indicators of changes in atmospheric conditions. Similarly, the extent of past glaciers gives valuable insights into paleoclimatic changes. For this purpose, we reviewed the paleo-glaciated mountains where cosmogenic surface exposure dating was applied inTurkey. We also evaluated the paleoclimatic results obtained from these studies to provide a regional overview. Twenty-seven mountains in Turkey are high enough to support Quaternary valley glaciers or ice caps. The timing of glaciations was reported mainly by cosmogenic dating of moraines. We re-evaluated the dated sites and recalculated some of …
Geological Features Of Neogene Basins Hosting Borate Deposits: An Overview Of Deposits And Future Forecast, Turkey, Cahit Helvaci
Geological Features Of Neogene Basins Hosting Borate Deposits: An Overview Of Deposits And Future Forecast, Turkey, Cahit Helvaci
Bulletin of the Mineral Research and Exploration
The geometry, stratigraphy, tectonics and volcanic components of the borate bearing Neogene basins in western Anatolia offer some important insights into on the relationship between basin evolution, borate formation and mode of extension in western Anatolia. Some of the borate deposits in NE-SW trending basins developed along the ‹zmir-Bal›kesir Transfer Zone (‹BTZ) (e.g. Bigadiç, Sultançay›r and Kestelek basins), and other deposits in the NE-SW trending basins which occur on the northern side of the Menderes Core Complex (MCC) are The Selendi and Emet basins. The K›rka borate deposit occurs further to the east and is located in a completely different …
Geological Heritage And Framework List Of The Geosites In Turkey, Nizamettin Kazanci, Fuat Şaroğlu, Yaşar Suludere
Geological Heritage And Framework List Of The Geosites In Turkey, Nizamettin Kazanci, Fuat Şaroğlu, Yaşar Suludere
Bulletin of the Mineral Research and Exploration
Geosites and the special type of geosite called geological heritage are tangible materials such as rocks, fossils, minerals, sedimentary sequences, or structures about which there are results and/or documents of significant events in the geological history. A Framework List deciphers the geological events of the past without mentioning the localities or results. Ideally, there is only one Framework List for every country. The Framework List for Turkey proposed by this study includes 85 titles (frame) in 10 categories. The Stratigraphic and Volcanic-Metamorphic-Sedimentary Petrology categories are the richest for the Frameworks; however they two already contain the majority of the geosites …
Late Permian Unconformity Around Ankara And New Age Data On The Basement Rocks, Ankara, Turkey, Mustafa Sevi̇n, Mustafa Dönmez, Gökhan Atici, Ender Sarifakioğlu, Serap Durmaz Arikan, Aysel Esatoğlu Vekli̇, Havva Soycan
Late Permian Unconformity Around Ankara And New Age Data On The Basement Rocks, Ankara, Turkey, Mustafa Sevi̇n, Mustafa Dönmez, Gökhan Atici, Ender Sarifakioğlu, Serap Durmaz Arikan, Aysel Esatoğlu Vekli̇, Havva Soycan
Bulletin of the Mineral Research and Exploration
At southwest of Gölbafl› (Ankara) there are two different sequences in tectonic contact. The one at the bottom with low-degree metamorphism is represented by phyllite, metabasite, crystallized limestone, schist and quartz porphyry veins. Above them are early Carboniferous-late Permian neritic and pelagic carbonates which are unconformably overlain by late Permian clastics and carbonates. Samples collected from neritic carbonates yielded early Carboniferous (Visian-Serpuhovian) to middle Carboniferous (Bashkirian- Moskovian) ages. These carbonates of shallow facies character are overlain by radiolarite-bearing pelagic deposits of middle Carboniferous-Permian age. Fossils from the upper most neritic carbonates gave Kubergandian-Murgabian age. This PermoCarboniferous sequence is unconformably overlain …
Archaeological And Geological Concepts On The Topic Of Ancient Mining, Prentiss De Jesus, Gonca Dardeni̇z
Archaeological And Geological Concepts On The Topic Of Ancient Mining, Prentiss De Jesus, Gonca Dardeni̇z
Bulletin of the Mineral Research and Exploration
Geological and archaeological research on ancient mining and metallurgy are actually targeting the same goals: understanding the nature and value of a mining operation. Geologists are intent on locating and qualifying ores and minerals for future use, whereas archaeologists strive to link ores to relevant historic and prehistoric metal artifacts and activities. This article discusses research into ancient Anatolian metallurgy by underscoring the overlap between geological and archeological practices. The work of archaeologists and geologists can be mutually beneficial through a close collaboration on the collection and analysis of field data. Their accumulated and combined knowledge would accelerate the progress …
Evaluation Of Asbestos Exposure In Dumanli Village (Çanakkale-Turkey) From A Medical Geology Viewpoint: An Inter-Disciplinary Study, Erdinç Yi̇ği̇tbaş, Arzu Mi̇ri̇ci̇, Uğur Gönlügür, Coşkun Bakar, İsmail Onur Tunç, Fırat Şengün, Özgür Işikoğlu
Evaluation Of Asbestos Exposure In Dumanli Village (Çanakkale-Turkey) From A Medical Geology Viewpoint: An Inter-Disciplinary Study, Erdinç Yi̇ği̇tbaş, Arzu Mi̇ri̇ci̇, Uğur Gönlügür, Coşkun Bakar, İsmail Onur Tunç, Fırat Şengün, Özgür Işikoğlu
Bulletin of the Mineral Research and Exploration
Biga Peninsula has many varied and interesting medical geologic problems, as well as being rich in natural geological resources. Mainly these problems are natural radioactivity, mineral dust, metal/mineral contamination in drinking water, acid rock/mine drainage, and problems related to geothermal and drinking water. With this view exposure to asbestos was surveyed and the results of this survey were evaluated by earth scientists and medical doctors. This inter-disciplinary study was done in Dumanl› village (Çanakkale-Turkey) in the Biga Peninsula, NW Turkey. Studies have been carried out in earth sciences and the health sciences simultaneously. The asbestiform minerals around Dumanl› village are …
The Late Quaternary Tectono-Stratigraphic Evolution Of The Lake Van, Turkey, Naci Görür, M. Namık Çağatay, Cengiz Zabci, Mehmet Sakinç, Remzi Akkök, Hande Şi̇le, Sefer Örçen
The Late Quaternary Tectono-Stratigraphic Evolution Of The Lake Van, Turkey, Naci Görür, M. Namık Çağatay, Cengiz Zabci, Mehmet Sakinç, Remzi Akkök, Hande Şi̇le, Sefer Örçen
Bulletin of the Mineral Research and Exploration
No abstract provided.
Review Of The Occurrence Of Two New Minerals In The Emet Borate Deposit, Turkey: Emetite, Ca7na3k(So4)9, And Fontarnauite, Na2sr(So4)[B5o8(Oh)](H2o)2, Cahit Helvaci̇
Bulletin of the Mineral Research and Exploration
No abstract provided.
Vertical And Horizantal Analysis Of Crustal Structure In Eastern Anatolia Region, Oya Pamukçu, Tolga Gönenç, Ayça Yurdakul Çirmik, Şevket Demi̇rbaş, Seyit Tosun
Vertical And Horizantal Analysis Of Crustal Structure In Eastern Anatolia Region, Oya Pamukçu, Tolga Gönenç, Ayça Yurdakul Çirmik, Şevket Demi̇rbaş, Seyit Tosun
Bulletin of the Mineral Research and Exploration
The tectonic regime of Eastern Anatolia is determined by Arabian-Eurasian continentcontinent convergence and the mechanism occurred with the convergence. North Anatolian Fault Zone (NAFZ), Eastern Anatolian Fault Zone (EAFZ), North Eastern Anatolian Faults and Bitlis Zagros Suture Zone are formed by this convergence, represent the characteristic of lithospheric structure of the region. In the scope of this study, the gravity anomalies of Eastern Anatolia were used for investigating the lithospheric structure. Firstly, second order trend analyses were applied to gravity data for examining the characteristic of the anomaly. Later, the vertical and horizontal derivatives methods were applied to the same …
The Geology Of Gökçeada (Çanakkale), Ramazan Sari, Ahmet Türkecan, Mustafa Dönmez, Şahset Küçükefe, Ümit Aydin, Öner Özmen
The Geology Of Gökçeada (Çanakkale), Ramazan Sari, Ahmet Türkecan, Mustafa Dönmez, Şahset Küçükefe, Ümit Aydin, Öner Özmen
Bulletin of the Mineral Research and Exploration
The geology and especially the magmatic rocks of Gökçeada, which is the biggest island of Turkey and located at 20 km’s west of Biga Peninsula, constitute the subject of this study. Late Ediacaran/ Early Paleozoic aged Çamlıca metamorphics which crop out with a tectonic uplift in a narrow area in northwest of Gökçeada are the oldest rocks of the island. Early Eocene aged Karaağaç Formation which is formed by submarine fan deposits unconformably overlies Çamlıca metamorphics. As for the Dağiçitepe volcanic member which is formed by rhyolitic lavas, tuff and tuffites emplaced into Karaağaç Formation cutting Çamlıca metamorphics is the …
The Secrets Of Massive Sulfide Deposits On Mid-Ocean Ridges And Küre-Mağaradoruk Copper Deposit, Yilmaz Altun, Huseyin Yilmaz, Ilyas Siner, Fatih Yazar
The Secrets Of Massive Sulfide Deposits On Mid-Ocean Ridges And Küre-Mağaradoruk Copper Deposit, Yilmaz Altun, Huseyin Yilmaz, Ilyas Siner, Fatih Yazar
Bulletin of the Mineral Research and Exploration
Küre region is located in western part of the Pontide tectonic belt. The oldest rocks around Küre are Paleozoic metamorphic rocks constituting “Rhodope-Pontide” continent. Liassic-pre Liassic ophiolites and basaltic volcanics, which form Paleotethys Ocean Floor are situated on “Rhodope-Pontide” continent as Paleotethys Ocean Floor residuals. Massive sulfide deposits in Küre Region are closely associated with pre Liassic – Liassic basaltic volcanics and intercalating black shale. These deposits are considered to have formed during hydrothermal mineralization processes when basaltic volcanism had stopped and defined as “Black Smoker” today. Massive sulfide bodies in Mağaradoruk copper deposits are lens shaped. Although ore lenses …
Orogenic Gold Prospectivity Mapping Using Geospatial Data Integration, Region Of Saqez, Nw Of Iran, Alireza Almasi̇, Alireza Jafari̇rad, Peyman Afzal, Mana Rahi̇mi̇
Orogenic Gold Prospectivity Mapping Using Geospatial Data Integration, Region Of Saqez, Nw Of Iran, Alireza Almasi̇, Alireza Jafari̇rad, Peyman Afzal, Mana Rahi̇mi̇
Bulletin of the Mineral Research and Exploration
The aim of this study is to map orogenic gold prospecting areas in the region of Saqez, NW of Iran. In order to achieve this task geological, geochemical and airborne geophysical data are analyzed and integrated using index overlay and fuzzy logic methods. Geological map of Saqez (1:100.000 scale) is used to assign lithological weights based on their favorability for hosting orogenic Au mineralization. Also a fault density map is produced and assigned based on the structural map which is included in the geological map. For preparing geochemical evidence maps, data from 535 stream sediment samples are examined using Number-Size …
Element Enrichments In Bituminous Rocks, Hatildağ Field, Göynük/Bolu, Ali Sari, Murad Çi̇lsal, Şükrü Koç
Element Enrichments In Bituminous Rocks, Hatildağ Field, Göynük/Bolu, Ali Sari, Murad Çi̇lsal, Şükrü Koç
Bulletin of the Mineral Research and Exploration
In this study, element enrichments in bituminous rocks (bituminous shale, bituminous claystone and bituminous marl) of the Kabalar Formation in the Hatıldağ field in Göynük town of the city of Bolu are investigated and their economic potential is discussed with regard to being a mineral deposit. Element analysis was conducted with ICP-ES (ICP emission spectrometry) and ICP-MS (ICP mass spectrometry) techniques. Organic carbon content in rocks was analyzed with Rock-Eval VI device. In pyrolysis analysis conducted on a total of 28 bituminous rocks that are collected from the Kayalık Dere measured stratigraphic section, Corg minimum and maximum are 0.40 %wt …
Refinement Of The Reverse Extrusion Test To Determine The Two Consistency Limits, Kamil Kayabalı, Ayla Bulut Üstün, Ali Özkeser
Refinement Of The Reverse Extrusion Test To Determine The Two Consistency Limits, Kamil Kayabalı, Ayla Bulut Üstün, Ali Özkeser
Bulletin of the Mineral Research and Exploration
Liquid limit (LL) and plastic limit (PL) are the two most commonly used index properties of fine-grained soils. They have been used in not only classification of soils but also in correlation with certain engineering properties. Therefore, they have been subjected to numerous researches since they were first introduced by Atterberg in 1911. While their mechanisms were well defined in many codes and they have been in use for decades, criticisms often arose pertinent to the uncertainties inherent to them. Incredible amount of effort has been exerted to invent more rational testing methods in place of both the Casagrande’s cup …
Brief Note On Neogene Volcanism İn Kemalpaşa–Torbali Basin (İzmi̇r), Fikret Göktaş
Brief Note On Neogene Volcanism İn Kemalpaşa–Torbali Basin (İzmi̇r), Fikret Göktaş
Bulletin of the Mineral Research and Exploration
No abstract provided.
Halloysite Intercalation Of Northwest Anatolia, Bülent Başara, Saruhan Saklar
Halloysite Intercalation Of Northwest Anatolia, Bülent Başara, Saruhan Saklar
Bulletin of the Mineral Research and Exploration
In this study, the representative samples were taken from the halloysite deposits located in Çanakkale-Balıkesir regions in the northwestern Anatolia. At first, the dehydration temperatures of the samples were determined after the sample preparation and characterization studies. It was found that halloysite samples start to loose their interlayer waters at 50°C and goes up to 70°C. The intercalation studies were carried out on the dehydrated samples by using ethylene glycol, potassium acetate, dimethyl sulfoxide and formamide. Although the negative results by ethylene glycol and potassium acetate, the satisfactory results were obtained by dimethyl sulfoxide and formamide. It is undertood that …
Benthic Foraminiferal Biostratigraphy Of Malatya Oligo-Miocene Succession (Eastern Taurids, Eastern Turkey), Fatma Gedi̇k
Benthic Foraminiferal Biostratigraphy Of Malatya Oligo-Miocene Succession (Eastern Taurids, Eastern Turkey), Fatma Gedi̇k
Bulletin of the Mineral Research and Exploration
The benthic foraminiferal biostratigraphy of Oligo-Miocene aged Muratlı and Petekkaya formations which crop out over wide regions around Akçadağ town, west of Malatya province in Eastern Taurids were revealed in this study. Systematical sampling was carried out in measured stratigraphical sections in four locations in order to perform stratigraphical and paleontological investigations. Benthic foraminifera taken from 182 hard rock samples were defined and three biozones were determined as; SBZ 21-22, belonging to Oligocene (Rupelian - Early Chattian), SBZ 23 (Late Chattian) and SBZ 25 belonging to Lower Miocene in shallow marine deposits in the region. It was stated that the …
Geological Factors Controlling Potential Of Lignite Beds Within The Danişmen Formation In The Thrace Basin, Doğan Peri̇nçek, Nurdan Atas, Seyma Karatut, Esra Erensoy
Geological Factors Controlling Potential Of Lignite Beds Within The Danişmen Formation In The Thrace Basin, Doğan Peri̇nçek, Nurdan Atas, Seyma Karatut, Esra Erensoy
Bulletin of the Mineral Research and Exploration
This project has been conducted for the General Directorate of Turkish Coal Enterprise. The aim of this study is to understand lignite potential of the basin. Subsurface data ( including numerous wells and several seismic lines) provided by TPAO, MTA and TKİ were used. Structure and thickness maps of Oligocene-Miocene-Pliocene units prepared for the basin. Purpose of this work is to understand economical values of lignite seam beds interbedding in the Danişmen Formation (Oligocene-Early Miocene). For this purpose, from bottom to top following maps were prepared: Structural map of the top Osmancık (Oligocene) Formation, thickness map of the Danişmen Formation, …
Investigation Of Irrigation Water Quality Of Surface And Groundwater In The Kütahya Plain, Turkey, Berihu Abadi Berhe, Mehmet Çeli̇k, Uğur Erdem Dokuz
Investigation Of Irrigation Water Quality Of Surface And Groundwater In The Kütahya Plain, Turkey, Berihu Abadi Berhe, Mehmet Çeli̇k, Uğur Erdem Dokuz
Bulletin of the Mineral Research and Exploration
The Kütahya plain is one of the plains in Kütahya/Turkey, where drinking, agricultural and industrial water supplies are highly dependent on groundwater resources. The local population largely depends on water from alluvial shallow aquifer waters and some on the Felent and Porsuk rivers. Appraisal of surface and groundwater quality is extremely important to make sure the sustainable use of it for drinking, agricultural, and industrial purposes. The chemical quality of surface and groundwater of Kütahya plain has been studied in detail in order to have better understanding of potential water quality. A total of 21 groundwater samples and 6 surface …