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Articles 1 - 30 of 41
Full-Text Articles in Physical Sciences and Mathematics
Ostracod And Foraminifer Assemblages Of Tertiary Sediments At W. Bakirköy (Istanbul), Ümit Şafak, Niyazi Avşar, Engin Meri̇ç
Ostracod And Foraminifer Assemblages Of Tertiary Sediments At W. Bakirköy (Istanbul), Ümit Şafak, Niyazi Avşar, Engin Meri̇ç
Bulletin of the Mineral Research and Exploration
No abstract provided.
Paleontological (Planktic Foraminifer-Ostracod) Investigation Of Eocene Sequence Of Karamanregion, Ümit Şafak
Paleontological (Planktic Foraminifer-Ostracod) Investigation Of Eocene Sequence Of Karamanregion, Ümit Şafak
Bulletin of the Mineral Research and Exploration
No abstract provided.
An Autochthonous. Recent Lateritic Occurrence In The Eastern Taurus Belt: Büyükbelen (Faraşa-Yahyali) Iron Occurrence, Şuayip Küpeli̇, İsrafil Kayabali, Mehmet Arslan, Hakan Aydın Saka
An Autochthonous. Recent Lateritic Occurrence In The Eastern Taurus Belt: Büyükbelen (Faraşa-Yahyali) Iron Occurrence, Şuayip Küpeli̇, İsrafil Kayabali, Mehmet Arslan, Hakan Aydın Saka
Bulletin of the Mineral Research and Exploration
No abstract provided.
An Example To The Jasperoidal-Type Epithermal Mineralization From The Western Anatolia: Deği̇rmenci̇ler Antimony Mineralization (Si̇mav, Kütahya), Vedat Oygür, Ayhan Erler
An Example To The Jasperoidal-Type Epithermal Mineralization From The Western Anatolia: Deği̇rmenci̇ler Antimony Mineralization (Si̇mav, Kütahya), Vedat Oygür, Ayhan Erler
Bulletin of the Mineral Research and Exploration
No abstract provided.
Morphology And Sedimentary Facies Of Actual Kocasu And Gönen Ri̇ver Deltas, Marmara Sea, Northwestern Anatolia, Nizamettin Kazanci, Ömer Emre, Tevfik Erkal, Özden İleri̇, Mustafa Ergi̇n, Naci Görür
Morphology And Sedimentary Facies Of Actual Kocasu And Gönen Ri̇ver Deltas, Marmara Sea, Northwestern Anatolia, Nizamettin Kazanci, Ömer Emre, Tevfik Erkal, Özden İleri̇, Mustafa Ergi̇n, Naci Görür
Bulletin of the Mineral Research and Exploration
No abstract provided.
Evidences Of Ductile Deformation In Evaporites Around Zara Area (E Si̇vas), Si̇vas Basin, Faruk Ocakoğlu
Evidences Of Ductile Deformation In Evaporites Around Zara Area (E Si̇vas), Si̇vas Basin, Faruk Ocakoğlu
Bulletin of the Mineral Research and Exploration
No abstract provided.
Late Miocene Artiodactylles (Mammalia) From Yukarisazak Village (Kale-Deni̇zli̇), Vahdet Tuna
Late Miocene Artiodactylles (Mammalia) From Yukarisazak Village (Kale-Deni̇zli̇), Vahdet Tuna
Bulletin of the Mineral Research and Exploration
No abstract provided.
Precious Metals At Sumadija-Kopaonik-Radan-Nova-Brdo Zone. Yugoslavia, Radule Popovic
Precious Metals At Sumadija-Kopaonik-Radan-Nova-Brdo Zone. Yugoslavia, Radule Popovic
Bulletin of the Mineral Research and Exploration
No abstract provided.
Geology And Origin Of Same Corbonate-Hosted Holloysite Deposits In Nw - Anatolia (Turkey), Ali Uygun
Geology And Origin Of Same Corbonate-Hosted Holloysite Deposits In Nw - Anatolia (Turkey), Ali Uygun
Bulletin of the Mineral Research and Exploration
No abstract provided.
Palaeogeographic Evulation Of Si̇vas Tertiary Basin'(W-Sw Si̇vas), Zeki Atalay
Palaeogeographic Evulation Of Si̇vas Tertiary Basin'(W-Sw Si̇vas), Zeki Atalay
Bulletin of the Mineral Research and Exploration
No abstract provided.
Peridoditic Xenoliths In Alkaline Basalts Attekirdag Region (Thrace), Fahri Esenli̇
Peridoditic Xenoliths In Alkaline Basalts Attekirdag Region (Thrace), Fahri Esenli̇
Bulletin of the Mineral Research and Exploration
No abstract provided.
Geochemical Criteria For The Investigation Of Facies Features Of Pantian Basins In Eastern Azerbaijan, Saday Azadoğlu Ali̇yev, Aynur Büyükutku
Geochemical Criteria For The Investigation Of Facies Features Of Pantian Basins In Eastern Azerbaijan, Saday Azadoğlu Ali̇yev, Aynur Büyükutku
Bulletin of the Mineral Research and Exploration
No abstract provided.
Geology Of Doğankuzu Ve Mortaş Bauxite Deposit And Features Of Sulfurous Zones, Mid-Taurides, Turkey, Hüseyin Öztürk, Nurullah Hani̇lçi̇
Geology Of Doğankuzu Ve Mortaş Bauxite Deposit And Features Of Sulfurous Zones, Mid-Taurides, Turkey, Hüseyin Öztürk, Nurullah Hani̇lçi̇
Bulletin of the Mineral Research and Exploration
No abstract provided.
A Bramatherium Skull (Giraffidae, Mammalia) From The Late Miocene Of Kavakdere (Central Turkey). Biogeographic And Phylogenetic Implications, Deniş Geraads, Erksin Güleç
A Bramatherium Skull (Giraffidae, Mammalia) From The Late Miocene Of Kavakdere (Central Turkey). Biogeographic And Phylogenetic Implications, Deniş Geraads, Erksin Güleç
Bulletin of the Mineral Research and Exploration
A sub-adult skull from the Late Miocene of Kavakdere, desciribed and referred to the Indian genus Bramatherium. increases the similarity between the Indian sub-continent and the Greco-Iranian province. The contents and subdivisions of the subfamily Sivatheriinae are reviewed, with 2 main groups being recognized, based upon the homologies and position of horns. They are perhaps both of western European origin.
Geology, Petrography And Precious Metal Mineralizations Of Altintepe And Çi̇lektepe Sectors Of Karşiyaka Ore Occurrences, Izmir, Turkey, İ. Sönmez Sayili, Şener Gonca
Geology, Petrography And Precious Metal Mineralizations Of Altintepe And Çi̇lektepe Sectors Of Karşiyaka Ore Occurrences, Izmir, Turkey, İ. Sönmez Sayili, Şener Gonca
Bulletin of the Mineral Research and Exploration
No abstract provided.
The Index Minerals And Mineral Assemblages Determined In Metamorphites Of Evci̇ler-Çatköy (Çayiralan-Yozgat) Segment Of Akdağmadeni̇ Massif, M. Bahadır Şahi̇n, Yavuz Erkan
The Index Minerals And Mineral Assemblages Determined In Metamorphites Of Evci̇ler-Çatköy (Çayiralan-Yozgat) Segment Of Akdağmadeni̇ Massif, M. Bahadır Şahi̇n, Yavuz Erkan
Bulletin of the Mineral Research and Exploration
No abstract provided.
Geology, Mineralogy And Geochemistry Of Sulphite Mineralization In The Ispendere Region (Malatya), Halide Dumanlilar, Doğan Aydal, Özcan Dumanlilar
Geology, Mineralogy And Geochemistry Of Sulphite Mineralization In The Ispendere Region (Malatya), Halide Dumanlilar, Doğan Aydal, Özcan Dumanlilar
Bulletin of the Mineral Research and Exploration
In this study, the geology, mineralogy, petrography, geochemistry, wall-rock alteration, ore-wall-rock relations, micro structural and textural relations in the copper-pyrite mineralization in Kızmehmet site (Ispendere-Malatya) and its vicinity were investigated. Ispendere Ophiolite (Jurassic-Lower Cretaceous), Yüksekova complex (Upper Cretaceous) and Kırkgeçit formation (Middle Eocene) crop out in the study area, which is located in Malatya-Elazığ region of the Eastern Taurus orogenic belt. Yüksekova complex is formed by Kuluşağı magmatites, Kapıkaya volcanics, Şişman magmatites and Harabe hill magmatites. Harabe hill magmatites cut all of the mentioned rocks in the complex and caused to form all of alteration types and different mineralizations in …
Taxonomic And Paelogeographic Approaches To The Dasyclad Algae In The Upper Jurassic (Kimmeridgian)-Upper Cretaceous (Cenomanian) Peritidal Carbonates Of The Fele (Yassıbel) Area (Western Taurides, Turkey), İsmai̇l Ömer Yilmaz
Turkish Journal of Earth Sciences
In the Fele (Yassıbel) area in the north of Beyşehir Lake in the Western Taurides, Upper Jurassic (Kimmeridgian) - Upper Cretaceous (Cenomanian) peritidal carbonates were studied in detail. In this study, 30 species of dasyclad algae were identified and 3 new Salpingoporella species were identified within the peritidal carbonates. It was determined that they belong to 13 different genera: Acroporella, Actinoporella, Campbelliella, Clypeina, Cylindroporella, Epimastopora, Epimastoporella, Kopetdagaria, Macroporella, Otternstella, Rajkaella, Salpingoporella, and Selliporella. Salpingoporella is the dominant genus. Some of the species are new records for Turkey: Clypeina nigra, Clypeina parasolkani, Otternstella lemmensis, Salpingoporella biokovensis, Salpingoporella circassa, Salpingoporella piriniae, and …
Clinopyroxene Compositions Of The Isotropic Gabbros From The Sarıkaraman Ophiolite: New Evidence On Supra-Subduction Zone Type Magma Genesis In Central Anatolia, Kenan M. Yaliniz, M. Cemal Göncüoğlu
Clinopyroxene Compositions Of The Isotropic Gabbros From The Sarıkaraman Ophiolite: New Evidence On Supra-Subduction Zone Type Magma Genesis In Central Anatolia, Kenan M. Yaliniz, M. Cemal Göncüoğlu
Turkish Journal of Earth Sciences
The Sarıkaraman Ophiolite is one of the least dismembered ophiolitic units of the allochthonous Central Anatolian Ophiolites, which retains its recognizable pseudostratigraphy. The Sarıkaraman Ophiolite is represented in its lowermost part by isotropic gabbros. Within the isotropic gabbro sequence, clinopyroxenes are observed as small, colorless relicts with a cloudy appearance. In most of the samples, they are completely replaced by a successive generation of green to brown amphiboles. Clinopyroxenes display diopsitic to augitic compositions within the range of En 45 Fs 5 Wo 49 to En 50 Fs 9 Wo 41 . They are Ca-rich and Na-poor (Na 2 O
Field, Petrographic And Geochemical Features Of The Baranadağ Quartz Monzonite Of The Central Anatolian Granitoids, Turkey, Nurdan S. Aydin, A. Piril Önen
Field, Petrographic And Geochemical Features Of The Baranadağ Quartz Monzonite Of The Central Anatolian Granitoids, Turkey, Nurdan S. Aydin, A. Piril Önen
Turkish Journal of Earth Sciences
The Baranadağ quartz monzonite is one of the granitioid intrusions of the Central Anatolian Crystalline Complex (CACC) which represents the passive continental margin of the Anatolide-Tauride platform. Medium to coarse-grained Baranadağ quartz monzonites typically include mafic microgranular enclaves and K-feldspar megacrysts and are cut by aplitic dykes representing the youngest magmatic activity of the study area. The intrusion is mainly composed of orthoclase, plagioclase, quartz, hornblende, biotite and clinopyroxene. It displays a slightly alkaline character and relatively well-developed calc-alkaline trend. The metaluminous Baranadağ quartz monzonites show comparable field, petrographic and/or geochemical features with those of the H-type (Hybrid) granitoids of …
Biostratigraphic And Environmental Analysis Of The Upper Jurassic- Lower Cretaceous Carbonate Sequence In The Başoba Yayla Area (Trabzon, Ne Turkey), Kemal Tasli, Erol Özer, Cemi̇l Yilmaz
Biostratigraphic And Environmental Analysis Of The Upper Jurassic- Lower Cretaceous Carbonate Sequence In The Başoba Yayla Area (Trabzon, Ne Turkey), Kemal Tasli, Erol Özer, Cemi̇l Yilmaz
Turkish Journal of Earth Sciences
In the Başoba Yayla (Trabzon, NE Turkey) area, which is located in the Eastern Pontides northern zone, platform carbonates were deposited during the Late Jurassic-Early Cretaceous time in environments varying from intertidal/ supratidal to outer shelf. The carbonate sequence begins with a thick dolomite unit of the Late Jurassic to Early Cretaceous age. The following unit is rich in benthic foraminifers and pelecypoda shells. The foraminiferal assemblage comprising Vercorsella laurentii/camposaurii and Pseudolituonella gavonensis indicates a Late Hauterivian to Early Aptian age for this unit. The Late Aptian-Albian facies is characterized by bioclastic wackestones containing benthic foraminifers typical of outer platform …
Mafic Microgranular Enclaves In The Kozak Granodiorite, Western Anatolia, Cüneyt Akal, Cahi̇t Helvaci
Mafic Microgranular Enclaves In The Kozak Granodiorite, Western Anatolia, Cüneyt Akal, Cahi̇t Helvaci
Turkish Journal of Earth Sciences
Enclaves which are relicts of initial basic magma give important information on the origin and evolution of granitic magmas. The mafic microgranular enclaves from the l-type Kozak pluton are less than 1 m that are located at the margin of pluton and mostly less than 15 cm and are generally in sharp contact with the surrounding granodiorite. In some cases, several enclaves may occur close to each other, but they are not closely clustered to form swarms. Most of the enclaves are ellipsoidal in shape. The largest enclaves are less ellipsoidal with curved boundaries. The mafic microgranular enclaves contain same …
Rock-Forming Nannofossils In Uppermost Jurassic-Lowercretaceous Rock Units Of Northwest Anatolia: Nannoconusand Its Resived Taxonomy, Sevi̇nç Özkan Altiner
Rock-Forming Nannofossils In Uppermost Jurassic-Lowercretaceous Rock Units Of Northwest Anatolia: Nannoconusand Its Resived Taxonomy, Sevi̇nç Özkan Altiner
Turkish Journal of Earth Sciences
Nannoconids have been recorded in a rock-forming quantity in the uppermost Jurassic-Lower Cretaceous rock units in Northwest Anatolia, Turkey. Samples were collected from seventeen stratigraphic sections spanning the calciturbidities of the Yosunlukbayiri Formation and pelagic micrites of the Sogukçam Limestone. Because of rareness and difficulties for extracting of calcareous nannofossil species particularly zone markers in these type lithologies, nannoconids have particular attention in terms of biostratigraphy. Twenty nine species of nannoconids were recorded in the studied samples. Their taxonomy were revised and their stratigraphic ranges were given. The classification of genus Nannoconusis based on the gross morphology of the test, …
Deformation Of Stibnites And Pyrites In The Madsan Antimony Deposit (Niğde, Turkey): Implications For Pressure-Temperatureconditions Of Local Deformation, İlkay Kuşcu, Ayhan Erler
Deformation Of Stibnites And Pyrites In The Madsan Antimony Deposit (Niğde, Turkey): Implications For Pressure-Temperatureconditions Of Local Deformation, İlkay Kuşcu, Ayhan Erler
Turkish Journal of Earth Sciences
The Madsan antimony deposit at the southeastern part of the Niğde province (south-central Turkey) includes a series of epithermal veins hosted by marbles and gneisses. The veins have a simple mineralogy of quartz, calcite, stibnite and pyrite as major constituents, and cinnabar occurs in trace amounts. The deposit experienced a progressive deformation evidenced by a set of textures developed especially in stibnite and pyrite. These are pressure lamellae and annealing as the main textures, and curvature, off-set of pressure lamellae and fracture filling as the textures of minor importance. These were developed in three successive deformation phases. Pressure lamellae represent …
Geology Of The Dereiçi (Şavsat, Artvin) Cu-Pb-Zn Deposits, Mesut Soylu, Ayhan Erler
Geology Of The Dereiçi (Şavsat, Artvin) Cu-Pb-Zn Deposits, Mesut Soylu, Ayhan Erler
Turkish Journal of Earth Sciences
The geological relationships between the rock units in the Dereiçi/Şavsat (Artvin) region and vein-type Cu-Pb-Zn deposits were presented in this paper. The study area comprises the Upper Cretaceous intermediate volcanic rocks and sedimentary rocks, with Post-Eocene dykes of andesitic and diabasic composition. The mineral deposits are classified as (1) Sphalerite-Galena-Chalcopyrite-Pyrite veins (Talatin Madeni, Binektasi and Fikrinin Madeni), (2) milky quartz-Chalcopyrite-Sphalerite-Galena-Pyrite veins and (3) Chalcopyrite-Pyrite veins. The general paragenetic sequence of the mineralizations is observed as quartz I-pyrite-chalcopyrite-sphalerite-galena-quartz II-chalcocite-covellite. The wall rocks are subjected to silicification, sericitic alteration, chloritization and carbonatization.
Along-Strike Discontinuity Of Active Normal Faults And Its Influence On Quaternary Travertine Deposition; Examples From Western Turkey, Zi̇yadi̇n Çakir
Along-Strike Discontinuity Of Active Normal Faults And Its Influence On Quaternary Travertine Deposition; Examples From Western Turkey, Zi̇yadi̇n Çakir
Turkish Journal of Earth Sciences
Detail mapping of active fault zones bounding four travertine masses in the Gediz and Menderes grabens of western Turkey revealed that they are divided into geometric fault segments up to 13 km long. Fissures, supplying the carbonate-rich waters that give rise to the travertines are preferentially developed at the ends of the fault segments or in extensional step-over zones where the offset between the fault strands is about 1 km or more. The deposition of travertines in such structural settings is probably a consequence of the network of fissures supplying the carbonate-rich waters being highly interconnected where extensional strains were …
Land Use In The Karstic Lands In The Mediterranean Region, Ibrahim Atalay
Land Use In The Karstic Lands In The Mediterranean Region, Ibrahim Atalay
International Journal of Speleology
Karstic lands have special importance in terms of soil formation and land-use. Soil appears only on the flat and slightly undulating karstic lands, while soils are found along the cracks and bedding surfaces between the layers on the hilly karst areas although these lands are rocky in appearance. Karstic lands in the hilly area are not conducive to cultivation. But rocky areas create a favourable habitat for the growth of forests except in an arid climate. Because the tree roots easily follow and develop along the cracks in the limestone. As a general rule soil erosion does not occur on …
Agricultural Use And Water Quality At Karstic Cuban Western Plain, Juan Reynerio Fagundo Castillo, Patricia González Hernandez
Agricultural Use And Water Quality At Karstic Cuban Western Plain, Juan Reynerio Fagundo Castillo, Patricia González Hernandez
International Journal of Speleology
In the paper some results of studies on the karstic aquifers of the western plain of Cuba are presented and discussed. The intensive exploitation of these aquifers for agriculture use and drinking water supply induces an increase of marine water intrusion, water salinisation and a progressive increase of chemical corrosion with a greater dissolution of carbonates. During the period of study (1983-1998) a trend in the deterioration of water quality was observed by means of a chronological series of hydrochloride content.
Karst And Agriculture In Australia, David Gillieson, Mia Thurgate
Karst And Agriculture In Australia, David Gillieson, Mia Thurgate
International Journal of Speleology
Much of the development and degradation of karst lands in Australia has occurred in the last two centuries since European settlement. Recent prolonged El Niño events add further climatic uncertainty and place real constraints on sustainable agriculture. The lower southeast of South Australia is perhaps the one area in Australia where karst, and particularly karst hydrology, impinge on the daily lives of the community in that pollution and overexploitation of the aquifer are readily apparent to the local population. Effluent from intensive dairy farms, piggeries and cheese factories enters the karst and has caused concern over pollution of water supplies. …
Land Use And Human Impact In The Dinaric Karst, Ivan Gams, Matej Gabrovec
Land Use And Human Impact In The Dinaric Karst, Ivan Gams, Matej Gabrovec
International Journal of Speleology
The article presents Dinaric karst, human impacts in the area, and its long history of deforestation, transformation into stony semi-desert, and a century long reforestation, where plans to restore the primary thick soil were just hoping against hope.