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Articles 1 - 17 of 17
Full-Text Articles in Physical Sciences and Mathematics
Marine Micro And Macro Faunas Of Holocene Deposits Of Anadolu Hi̇sari (Anatolian Castle, Bosphorus) And The Presence Of Xantho Poressa (Olivi) (Crustacea: Decapoda: Xanthidae), Engin Meri̇ç, Hüsamettin Balkis, Niyazi Avşar, Atike Nazi̇k, Feyza Di̇nçer
Marine Micro And Macro Faunas Of Holocene Deposits Of Anadolu Hi̇sari (Anatolian Castle, Bosphorus) And The Presence Of Xantho Poressa (Olivi) (Crustacea: Decapoda: Xanthidae), Engin Meri̇ç, Hüsamettin Balkis, Niyazi Avşar, Atike Nazi̇k, Feyza Di̇nçer
Bulletin of the Mineral Research and Exploration
The presence of Xantho poressa (Olivi), known as the recent fossil, from Crustacea- Decapoda in Holocene deposits of Anadolu Hisarı has been revealed inthis study. This crab species is known as ranging from Mediterranean Sea to Black Sea and from Canary Islands to Portugal in Northeast Atlantic within depths of 0-15 meters in tidal and shallow subtidal environments. Remnants of broken crab shells with benthic foraminifera, ostracoda, bryozoan, pelecypoda and gastropoda were found in 78 samples which were collected from different levels of 8 of the cores taken from the basement of Küçüksu Palace at the Anadolu Hisarı. It was …
The Tectono-Stratigraphic Features Of Metamorphites In Alacahan-Çeti̇nkaya Region (Kangal, Sivas), Metin Beyazpi̇ri̇nç, Ali Ekber Akçay
The Tectono-Stratigraphic Features Of Metamorphites In Alacahan-Çeti̇nkaya Region (Kangal, Sivas), Metin Beyazpi̇ri̇nç, Ali Ekber Akçay
Bulletin of the Mineral Research and Exploration
The study area covers Alacahan, Çetinkaya and Kangal regions. Allochthonous and autochthonous rock units are present in the region. Metamorphic rocks exposed in the region have been studied in detail as formation and member and have been incorporated into the Bolkardağ Nappe. Bolkardağ nappe which deposited in Late Devonian-Late Cretaceous and metamorphosed in green schist facies, has been distinguished into Late Devonian Düzce formation, Carboniferous Kınalar formation, late Permian Çayderesi formation, (?)Middle/Late Triassic-Cretaceous Kayaköy formation and Cretaceous Karaböğürtlen formation from base to top. The quartzites found at the base of the Kınalar formation and metaconglomerates at the base of the …
The Segment Structure Of Southern Branch Of The North Anatolian Fault And Paleoseismological Behaviour Of The Gemli̇k Fault, Nw Anatolia, Selim Özalp, Ömer Emre, Ahmet Doğan
The Segment Structure Of Southern Branch Of The North Anatolian Fault And Paleoseismological Behaviour Of The Gemli̇k Fault, Nw Anatolia, Selim Özalp, Ömer Emre, Ahmet Doğan
Bulletin of the Mineral Research and Exploration
The North Anatolian Fault (NAF), which is an intra-continental transform fault, is divided
into two branches as Northern and Southern branches in Marmara Region. The southern
branch which separates from each other by rightward stepovers between Bandırma and
Dokurcun valley is formed by three main fault segments as Geyve, İznik and Gemlik from
East to West. The length of fault segments ranges between 40 and 57 km and GPS data in
Southern branch propose a 5 mm/year slip rate. Two surface faulting events were observed
during paleoseismological excavations which had been carried out on 40 km long Gemlik
segment and …
First Determination Of Rudists (Bivalvia) From Ne Iraq: Systematic Palaeontology And Palaeobiogeography, Sacit Özer, Kamal Haji Karim, Dereen Mohamad Sadiq
First Determination Of Rudists (Bivalvia) From Ne Iraq: Systematic Palaeontology And Palaeobiogeography, Sacit Özer, Kamal Haji Karim, Dereen Mohamad Sadiq
Bulletin of the Mineral Research and Exploration
The Maastrichtian Aqra Formation around Mawat-Chwarta (Sulaimaniya city) in NE Iraq consists mainly of coarse grained detrital limestone, locally containing terrigenous clastics, and is characterized by abundant rudists in life position. The rudist biostromes are very common in the formation and benthic foraminifers, gastropods and non-rudist bivalves with scarcer echinoderms and solitary corals are associated with the rudists. This first determination of rudists from NE Iraq recognizes the following species, Dictyoptychus aff. morgani, Sauvagesia somalica, Hippurites cornucopiae, Praeradiolites subtoucasi and Lapeirousia jouanneti, as well as some indeterminable radiolitid sections. This rudist fauna is assigned to the Hippurites cornucopiae interval zone …
Organic Geochemical And Petrographic Properties Of Hazro Dadaş (Di̇yarbakir) Coals, Orhan Kavak, Selami Toprak
Organic Geochemical And Petrographic Properties Of Hazro Dadaş (Di̇yarbakir) Coals, Orhan Kavak, Selami Toprak
Bulletin of the Mineral Research and Exploration
This study was carried out in Hazro-Dadaş (Diyarbakır) region which owns the only coal basin in the area. Chemical, petrographic analysis and organic geochemical evaluations of the Permian aged coals were taken into consideration. Coal quality investigation along with proximate (moisture, volatile matter, fixed carbon, ash) and elemental analyses (C, H, O, and S, N) were performed and revealed. The huminite reflectance of organically abundant matter and coal levels were found to be between 0.458 and 1.141 %. This parameter complies with fluorescence colors, calorific value (average original 3165 – 3432 Kcal/kg) and average Tmax (418 oC). Hasbro coals show …
A New Medium To High Enthalpy Geothermal Field In Aegean Region (Akyar) Menderes – Seferi̇hi̇sar – İzmi̇r, Western Anatolia, Turkey, Metin Bulut
Bulletin of the Mineral Research and Exploration
This study was performed considering that low to medium enthalpy geothermal areas are important besides the geothermal fields with high temperature located in Western Anatolia for heating, thermal tourism and agricultural applications. It was also aimed at obtaining fluids at high temperature in areas which were observed at a temperature relatively lower than the surface temperature. The study area is located at a region between the towns of Menderes and Seferihisar to the south-southwest of Izmir. This is a multidisciplinary investigation which obtained fluids and studied the geothermal energy potential of the area. Field studies were finalized carrying out geological …
Brief Note On New Data Related To The Chronostratigraphic Location Of Cumaovasi Volcanics, Fikret Göktaş
Brief Note On New Data Related To The Chronostratigraphic Location Of Cumaovasi Volcanics, Fikret Göktaş
Bulletin of the Mineral Research and Exploration
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The Airborne Magnetic Signature Of Gökova Gulf, Uğur Akin, Ahmet Üçer
The Airborne Magnetic Signature Of Gökova Gulf, Uğur Akin, Ahmet Üçer
Bulletin of the Mineral Research and Exploration
Gökova gulf situated in the Aegian extension zone in Turkey has been considered very interesting for numerous research workers. Gökova gulf is located in the N-S regional extentional tectonic regime. N-S extension of western Anatolia initiated development of E-W extended grabens here. The bay extends 100 km E-W and 25 km N-S directions. Datça peninsula is in the south, Bodrum peninsula is located in the north of the Gökova gulf. In recent years ‘Full Tensor Gradiometer Potential Field’ methods (FTG) has found a practice area in between the gravimetric and magnetic methods. In the past as it was in the …
Slope Instability In Open Pits And An Example Of A Retrospective Analysis: Afşi̇n-Elbi̇stan-Kişlaköy Open Pit Coal Deposit, İbrahim Akbulut, İlker Çam, Tahsin Aksoy, Dinçer Çağlan, Tolga Ölmez
Slope Instability In Open Pits And An Example Of A Retrospective Analysis: Afşi̇n-Elbi̇stan-Kişlaköy Open Pit Coal Deposit, İbrahim Akbulut, İlker Çam, Tahsin Aksoy, Dinçer Çağlan, Tolga Ölmez
Bulletin of the Mineral Research and Exploration
The subject of this study is to study the instabilities that have developed in the permanent east and west slopes of the Kışlaköy open pit of the Elektrik Üretim A.Ş. Afşin-Elbistan Linyitleri İşletmesi and to work out the sliding mechanism causing it. In the Kışlaköy open pit to establish if mass movement is continuing and if so which direction it would move, amount of mass to be involved and the failing model. Six movement control observations stations were established along 3 lines in each of west and east slopes. No movement was observed in the west slopes. On the other …
Original Findings On The Ore-Bearing Facies Of Volcanogenic Massive Sulphide Deposits In The Eastern Black Sea Region (Ne Turkey), M.Kemal Revan, Yurdal Genç, V. Valery Maslennikov, Taner Ünlü, Okan Deli̇baş, Semi Hamzaçebi̇
Original Findings On The Ore-Bearing Facies Of Volcanogenic Massive Sulphide Deposits In The Eastern Black Sea Region (Ne Turkey), M.Kemal Revan, Yurdal Genç, V. Valery Maslennikov, Taner Ünlü, Okan Deli̇baş, Semi Hamzaçebi̇
Bulletin of the Mineral Research and Exploration
In the massive sulphide deposits of the eastern Black Sea region, there are ore facies and ore-bearing sedimentary facies. The former are subdivided into hydrothermal-metasomatic, seafloor hydrothermal, and biological facies. Hydrothermal-metasomatic facies refer to sub-seafloor processes and include network-disseminated, massive vein, and massive lens facies. The precipitation of sulphide minerals within pre-existing volcano-sedimentary rocks occurs largely beneath the seafloor, and these ores form an important component of some deposits. The term seafloor hydrothermal facies refers to sulphide accumulation on the seafloor and is characterised by hydrothermal chimneys and clastic sulphide ores. Clastic sulphide ores can be subdivided into proximal and …
New Approaches On The Investigation Of Covered Geothermal Fields: Exploration Of Kütahya – Şaphane – Karacaderbent Buried Geothermal Fields And Their Developments, Musa Burçak, Hüseyin Dünya, Ömer Hacisali̇hoğlu
New Approaches On The Investigation Of Covered Geothermal Fields: Exploration Of Kütahya – Şaphane – Karacaderbent Buried Geothermal Fields And Their Developments, Musa Burçak, Hüseyin Dünya, Ömer Hacisali̇hoğlu
Bulletin of the Mineral Research and Exploration
The basement in Şaphane region is constituted by Paleozoic gneiss, schist and marbles belonging to northern margin of the Menderes Massif. These basement rocks are overlain by Cretaceous aged Dağardı ophiolitic melange. All these rocks are discordantly covered by Neogene – Quaternary sedimentary and volcanic rocks deposited under lacustrine – continental environments. The main purpose of this study is to explore buried geothermal system on a covered area using geological, geophysical and geochemical methods and to develop this system by drilling investigations. Geological, geophysical, geochemical and drilling investigations, well development and test studies were applied in this research. This study …
The Ostracod Fauna And Environmental Characteristics Of The Volcano Sedimentary Yol Üstü Formation In The Hinis Region, Erzurum (Eastern Anatolia), Turkey, Ümit Şafak
Bulletin of the Mineral Research and Exploration
The volcanosedimentary Yolüstü formation which outcrops in the vicinity of Hınıs Town, the southeast of Erzurum City, consists of conglomerate, marl, agglomerate, claystone, tuffite, fragmented travertine limestone with fragments of sand – pebble - plant, lacustrine limestone and tuffaceous – clayey limestone. In this formation, carefully selected 3 measured stratigraphic sections were taken at levels in which the lithology of hard travertine limestones with plant fragments and soft tuffaceous – clayey limestone are present. Washed samples which had been taken from these sections were studied and assessed, and then ostracods reflecting freshwater and brackish water environments were detected. In the …
Petrogenetic Characteristics Of Oyaca – Kedi̇kayasi – Boyalik Adakites In Sw Ankara (Central Anatolia, Turkey): Evidence For Slab Melt Metasomatism, Pınar Şen, Erdal Şen
Petrogenetic Characteristics Of Oyaca – Kedi̇kayasi – Boyalik Adakites In Sw Ankara (Central Anatolia, Turkey): Evidence For Slab Melt Metasomatism, Pınar Şen, Erdal Şen
Bulletin of the Mineral Research and Exploration
The Early Miocene Oyaca, Kedikayası and Boyalık dacites, situated approximately 50-60 km southwest of Ankara have affinities similar to adakitic rocks. They have porphyritic texture with a variable amount of plagioclase feldspar, hornblende and lesser biotite phenocrysts and a groundmass of plagioclase and quartz microcrysts. They have high Sr/Y (55-79 ppm) and (La/Yb)n (21-32 ppm) ratios, and low Y (10-19 ppm) and heavy rare earth element contents. According to their SiO2 (62.3-69.70 % wt.) and MgO (0.62-2.23 % wt) contents, they are referred to as high silica adakites, indicating the effects of slab-derived melts in their genesis. The adakites in …
Hydrogeochemical And Isotopic Investigation Of Nasrettin Hoca Springs, Eski̇şehi̇r, Turkey, Mehmet Çeli̇k, Uğur Erdem Dokuz, Pakize Elif Türköz, Özlem Güllü, Şebnem Arslan
Hydrogeochemical And Isotopic Investigation Of Nasrettin Hoca Springs, Eski̇şehi̇r, Turkey, Mehmet Çeli̇k, Uğur Erdem Dokuz, Pakize Elif Türköz, Özlem Güllü, Şebnem Arslan
Bulletin of the Mineral Research and Exploration
No abstract provided.
Descriptions Of Two New Families, Three New Species And Re-Description Of Four Known Genera And One Subfamily From The Larger Benthic Foraminifera Of Paleocene In Turkey, Ercüment Si̇rel
Bulletin of the Mineral Research and Exploration
Two new foraminiferal families are introduced as follows: the Anatoliellidae (type
genus Anatoliella Sirel) in the superfamily Ataxophragmiacea Schwager and the family
Bolkarinidae (type genus Bolkarina Sirel) in the superfamily Orbitoidacea Schwager. Three
new species of Paleocene are described and figured as follows: Ranikothalia polatliensis,
Nurdanella paleocenica, Periloculina yilmazi. In addition, four known Paleocene genera
such as Bolkarina Sirel, Globoflarina Rahaghi, Nurdanella Özgen and Coskinon Hottinger
and Drobne and subfamily Globoflarininae are redescribed.
Neogene Stratigraphy Of The Eski̇şehi̇r Graben And The Investigation Of Coal Deposition By Seismic Reflection Method, İlker Şengüler, Erdener Izladi
Neogene Stratigraphy Of The Eski̇şehi̇r Graben And The Investigation Of Coal Deposition By Seismic Reflection Method, İlker Şengüler, Erdener Izladi
Bulletin of the Mineral Research and Exploration
No abstract provided.
A New Age Finding In The Central Sakarya Region (Nw Turkey), Mehmet Fuat Uğuz
A New Age Finding In The Central Sakarya Region (Nw Turkey), Mehmet Fuat Uğuz
Bulletin of the Mineral Research and Exploration
The existence of a metamorphic basement cut by granitoids is known in the Central Sakarya region of northwest Turkey according to the previous studies. Over this metamorphic basement, there is a Liassic unit which contains ammonite, brachiopod and some benthic foraminifers and has a sequence starting with fluvial deposits at the base and grading into coastal, subtidal and shallow marine sediment character towards the top in the vicinity of Sarıcakaya district, Eskişehir City. At different levels of this unit which is called as the “Kapıkaya Formation”, the Campanian age fossils such as; Ceratolithoides aculeus (Stradner), Pervilithus varius Crux, Watznaueria barnesae …