Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Kaygusuz, Abdullah(15)
- Kurt, Kemal(14)
- Sipahi, Ferkan(14)
- Yücel, Cem(9)
- Arslan, Mehmet(8)
- Akar, Bülent(7)
- Gücer, Mehmet Ali(6)
- Uzun, Sevda(6)
- Şahin, Bülent(6)
- Aslan, Zafer(5)
- Batan, Nevzat(5)
- Dokuz, Abdurrahman(5)
- Vural, Alaaddin(5)
- Erata, Hüseyin(4)
- Temizel, Irfan(4)
- Akpınar, İbrahim(3)
- Alataş, Mevlüt(3)
- Aydınçakır, Emre(3)
- Eyuboglu, Yener(3)
- Ezer, Tülay(3)
- Karsli, Orhan(3)
- Kulakaç, Nurşen(3)
- Sadiklar, M. Burhan(3)
- Saydam Eker, Çiğdem(3)
- Siebel, Wolfgang(3)
- Snegovaya, Nataly Yu.(3)
- Uysal, Ibrahim(3)
- Akpinar, A.(2)
- Akpinar, Adem(2)
- Aydinçakir, Emre(2)
- Barinova, Sophia(2)
- Bektas, Osman(2)
- Bilgic, Abdulbaki(2)
- Bostan, Sedat(2)
- Bölükbas, Mehmet(2)
- Chen, Bin(2)
- Coruh, Emine(2)
- Dervisoglu, Adalet(2)
- Dogan, Nilgun(2)
- Eker, Çiğdem Saydam(2)
Yayınlar
- MakaleYalnız künye2017Scopus SJRQ2Evaluation of potentially toxic element contents and Pb isotopic compositions in Ankara Stream sediments within an urban catchment in central Turkey
Eker, Çiğdem Saydam; Sipahi, Ferkan; Özkan, Özay; Gümüş, Mustafa Kemal
This study aimed to interpret the spatial distribution, enrichment factor (EF), and geo-accumulation of potentially toxic elements in the bed sediments (ASBS) and Pleistocene-aged overbank sediments (ASOS) of the Ankara Stream in Turkey. The potential toxic pollution of the investigated potentially toxic elements was defined by evaluating the EF, geo-accumulation index (Igeo), and Pb anthropogenic contribution. The distributions of As, Ni, and Co in the analyzed sediments were uniform in the ASBS and ASOS along the length of the stream. The EF and Igeo values indicated that ASBS and ASOS were significantly polluted by As and Ni and moderately polluted by Co, Zn, and Cu. ASBS was locally strongly polluted by Pb and Cd. Pb anthropogenic contribution was estimated at an average of > 100% in the ASBS and ASOS. The potentially toxic element levels and distribution patterns revealed that industrial activities, gasoline combustion, vehicular emission, phosphate fertilizers and natural sources were probable causes of metal pollution in Ankara Stream sediments. These potentially toxic elements were transported by atmospheric conditions and stream water. The potentially toxic elements in Ankara Stream increased with each passing day and were important in evaluating the potential toxicity risks to living organisms. Thus, suitable measures should be taken to ensure appropriate treatment of wastewater before toxic residues are disposed into the nearby stream. Chimney filter, treatment plants, and appropriate technology should be used in the organized industrial zone to prevent atmospheric pollution.
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İncele - MakaleYalnız künye2017Scopus SJRQ1Formation of the Eğrikar (Gümüşhane) Fe–Cu skarn type mineralization in NE Turkey: U–Pb zircon age, lithogeochemistry, mineral chemistry, fluid inclusion, and O-H-C-S isotopic compositions
Sipahi, Ferkan; Akpınar, İbrahim; Eker, Çiğdem Saydam; Kaygusuz, Abdullah; Vural, Alaaddin; Yılmaz, Meltem
The Eğrikar Fe–Cu skarn type mineralization is located approximately 100 km NW of Gümüşhane in NE Turkey. Geochemical analyses of diorite, which is thought to cause skarn, indicate medium K calc-alkaline (1.3 to ~ 2.3 wt% K2O), metaluminous to peraluminous (A/CNK = 0.76 to 1.13) and resembles a continental arc granite. The age of U–Pb zircon obtained from diorite is 42.3 ± 1.0 Ma, which reflects the age of skarn metasomatism after intrusion into Late Cretaceous sandy carbonates. Skarn formation zones are recognized as endo- and exoskarn. The endoskarn zone mainly consists of pyroxene with hedenbergite (Di4.31–28.14Hd59.29–80.82Jo5.0–35.55) at prograde stage. Mn content of pyroxene increases a slight from endo to exoskarn. Pyroxene is replaced by epidote and hornblende at the retrograde stage. The exoskarn zone comprises garnet with andradite (Ad91-99Gr01–07) and grossular-andradite (Ad44-95Gr05–54), epidote and quartz as silicate minerals, and magnetite and hematite as ore minerals. Magnetite is the abundant ore mineral and is accompanied by chalcopyrite and minor pyrite at retrograde stage. On the basis of fluid inclusion values of minerals, the temperature range for hedenbergite in endo-exoskarn is 350 °C–425 °C, for epidote in exoskarn is 365 °C–376 °C, and for quartz in exoskarn 200 °C–380 °C. NaCl equivalent salinity for hedenbergite 6.88–10.73 wt% and for quartz is 3.9–15.38 wt. The δ18O values of hedenbergite is 4.1 to 4.7‰ and for garnet 3.4‰ at prograde stage, for epidote 7.9–9.2‰, for magnetite 1 to 4.4‰, for hematite − 2.9 to − 1.6‰ and for quartz range between 8.5‰ and 15.2‰. The δ18O value of epidote suggests that oxygen is a magmatic fluid whereas hedenbergite, garnet, quartz and magnetite show the mixing of magmatic and meteoric fluids. In addition, the C isotope values (− 3.2 to 2.8‰) of calcite and marble in Eğrikar Fe–Cu skarn reflect those of metamorphic, and skarns. Based on oxygen isotope data from mineral pairs, the retrograde skarn formation is characterized by epidote–magnetite assemblage formed at 255 °C–438 °C. Fluid oxygen isotope compositions of magnetite and epidote pairs of the exoskarn skarn zone indicate a mixing of magmatic and meteoric fluids with narrow δ18O values between 7.17‰ and 8.9‰. The δ34S values of the pyrites exhibit a narrow range of 3‰ and 4.4‰, thereby indicating that sulfur were probably leached from magmatic rocks. Based on the field and laboratory observation, mineral chemistries, fluid inclusion studies and isotope composition analysis, it is suggested that the Eğrikar Fe–Cu skarn mineralization occurs in a magmatic origin fluids being initially under reduced conditions, subsequently under oxidized conditions, and at shallow depth.
AtıfScopus36WoS33OpenAlex43İncele - MakaleYalnız künye2017Scopus SJRQ1Petrogenesis of ultramafic rocks from the eastern Orhaneli ophiolite, NW Turkey: Hints on the initiation and evolution of melt-peridotite interaction processes within a heterogeneously depleted mantle section
Uysal, Ibrahim; Dokuz, Abdurrahman; Kapsiotis, Argyrios; Saka, Samet; Karsli, Orhan; Kaliwoda, Melanie; Mueller, Dirk
The eastern Orhaneli ophiolite in NW Anatolia (Turkey) consists of voluminous dunite and minor harzburgite intruded by clinopyroxenite veins. Harzburgite contains spinel of low Cr# [100 x Cr/(Cr + Al) = 40-45] and diopside of low Al2O3 and TiO2 contents, whereas dunite contains spinel of higher Cr# (62-82) and diopside (blebs) (even more) depleted in Al2O3 and TiO2 (than harzburgite). The concentrations of Heavy Rare Earth Elements (HREE) in harzburgite are consistent with derivation of this type of peridotite from 19% dry melting of a fertile mantle protolith at a MOR regime. Dunites have lower concentrations of HREE than harzburgite implying that dunites were generated by higher degrees (> 30%) of (cumulative) melting of the same protolith. Furthermore, the characteristic U-shapes of the chondrite-normalized REE-patterns of dunites indicate the involvement of hydrous melt-peridotite interaction processes in their genesis. Nevertheless, a set of mosaic-in texture dunite samples contain olivine that has lower Fo# [100 x Mg/(Mg + Fe2+)] and NiO contents than olivine in harzburgite. These dunites are probably of cumulate origin as it is also indicated by their enrichment in Pt and Pd (<= 17.92 ppb). Micro-textural and Re-Os isotopic data support that clinopyroxenite intrusions do not have a pure magmatic origin and their formation was partly controlled by metasomatic processes. Overall data indicate that the eastern Orhaneli ultramafic rocks have a complex petrological history including various stages of partial melting, metasomatism and magmatism in an evolving from MOR to SSZ geotectonic setting.
AtıfScopus17WoS14OpenAlex15İncele - MakaleYalnız künye2016A STUDY - CONCERNING THE SOLUTION PROCESS IN TURKEY-RELATED TO HOFSTEDE'S AVOIDANCE OF UNCERTAINTY IN THE CONTEXT OF CULTURAL DIMENCION BEFORE 7th JUNE 2015 PARLIAMENTARY ELECTION
Güllupünar, Hasan; Gümüsok, Seyfullah
An individual's attitudes and behaviours differ depending upon the circumstances in which it is located. In a significant environment in terms of cause and effect, the rational aspects of an individual's attitudes and behaviours dominate. Therefore, an affirmative perspective has control over the individual's attitudes and behaviours. But in the case of increased uncertainty in terms of cause and effect, radical tendency in an individual's attitudes and behaviours are increasing to avoid uncertainty. This case causes the parties diverging from each other in the matter of solutions for social problems. This study deals with the perception types related to the 'solution process 'that has been initiated for the solution of Kurdish issue in Turkey which is one of the most important problem since the foundation of Republic and the effects of these perception types on the future of solution process. For his purpose, a research has been carried out in Gumushane and Sirnak where different approaches are prevailing about the solution process. In the study with the simple random sampling method, 300 people in Sirnak and 250 people in Gumushane were included with face to face interview. The study, in which five types of perception about the solution process have been revealed, has concluded that those who have an affirmative perspective about the solution process support the continuation of this process and taking further steps about the issue. However, it is clearly seen that those who have concerns or negative perceptions regarding the solution process propose harder and strict actions related to the solution of Kurdish issue. Therefore, in perception types dominated by uncertainty, more radical tendency has been observed in the attitudes about the solution process.
- MakaleAçık Erişim2016Scopus SJRQ2Diversity and ecology of benthic algae in Karagöl Lake, Karagöl-Sahara National Park (Şavşat, Artvin, Turkey)
Akar, Bülent; Şahın, Bülent
Benthic algal flora of Karagöl Lake, its seasonal variation, and the physical and chemical parameters of the water were studied between October 2008 and September 2010. The algal flora consisted of 112 taxa belonging to the divisions Charophyta (41), Chlorophyta (33), Cyanobacteria (18), Euglenozoa (17), Miozoa (2), and Ochrophyta (1). Six desmid taxa found in this research are new records for the freshwater algal flora of Turkey. The qualitative dominance of benthic taxa typical of slightly alkaline and mesotrophic ecosystems was observed. The qualitative and seasonal variations in epipelic taxa analyzed were dependent on the physicochemical characteristics of the water. Water quality was analyzed on the basis of benthic taxa, which are bioindicators. The physicochemical properties of the water are suitable for the development of a rich algal flora (especially desmids). According to the benthic algal composition and indicator species, it is estimated that Karagöl Lake has mesotrophic lake characteristics. This is the first study of benthic algal flora of Karagöl Lake and marks a significant contribution to the knowledge of Karagöl-Sahara National Park’s aquatic biodiversity.
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İncele - MakaleAçık Erişim2016Scopus SJRQ2Assessing the effects of long-term recreational activities on landscape changes in Abant Natural Park, Turkey
Çakir, Günay; Müderrisoğlu, Haldun; Kaya, Latif Gürkan
Natural, protected areas offer many possibilities for recreation in rural areas such as camping, one of the most popular activities. The system established for protected areas in Turkey aims to provide a foundation for conserving areas for recreation. One such area, Abant Natural Park, is convenient for visits from Turkey’s two most populated metropolitan areas, Istanbul and Ankara. It also attracts tourists from other regions and countries. The aim of the present study was to evaluate the vegetation loss and land cover changes due to picnic/camping, transhumance, and construction over 40 years (1966–2004) in the park using data on visitor numbers, vegetation patches, corridors and connectivity. For evaluating landscape variables, remote sensing data and aerial photos were used. When aerial photos were imported into the ERDAS Imagine program, ground control points identified, and individual images orthorectified, land degradation was not found in the use of camping areas. Moreover, manmade areas (road, car park and hotel) observably increased, thus decreasing the forest lands. The findings show that the land use types that have had the greatest ecological impact are transhumance and construction of hotels, which also require infrastructure development. The intensity of the ecological effects mandates precautions to lessen the impacts and the need for continuing assessment to ensure sustainable use of the area.
AtıfScopus19WoS16OpenAlex19İncele - MakaleAçık Erişim2016Scopus SJRQ3Mediostoma izmirica sp. nov.: A new harvestman species (Arachnida, Opiliones, Nemastomatidae) from Turkey
Snegovaya, Nataly Yu.; Kurt, Kemal; Yağmur, Ersen A.
A new harvestman species of the genus Mediostoma Kratochvil, 1958, Mediostoma izmirica sp. nov., is described and illustrated based on males and females from İzmir Province, Turkey. Differences between the new species and other species of the genus Mediostoma are indicated. Scanning electron microscope photographs of its characteristic structures are also given.
AtıfScopus3WoS2OpenAlex2İncele - MakaleAçık Erişim2016Scopus SJRQ1Subduction-related Late Cretaceous high-K volcanism in the Central Pontides orogenic belt: constraints on geodynamic implications
Aydınçakır, Emre
Mineral chemistry, major and trace elements, 40Ar/39Ar age and Sr–Nd–Pb isotopic data are presented for the Late Cretaceous Hamsilos volcanic rocks in the Central Pontides, Turkey. The Hamsilos volcanic rocks mainly consist of basalt, andesite and associated pyroclastics (volcanic breccia, vitric tuff and crystal tuff). They display shoshonitic and high-K calc-alkaline affinities. The shoshonitic rocks contain plagioclase, clinopyroxene, alkali feldspar, phlogopite, analcime, sanidine, olivine, apatite and titanomagnetite, whereas the high-K calc-alkaline rocks contain plagioclase, clinopyroxene, orthopyroxene, magnetite / titanomagnetite in microgranular porphyritic, hyalo-microlitic porphyritic and glomeroporphyritic matrix. Mineral chemistry data reveal that the pressure condition of the clinopyroxene crystallisation for the shoshonitic rocks are between 1.4 and 6.3 kbar corresponds to 6–18-km depth and the high-K calc-alkaline rocks are between 5 and 12 km. 40Ar/39Ar age data changing between 72 ± .5 Ma and 79.0 ± .3 Ma (Campanian) were determined for the Late Cretaceous Hamsilos volcanic rocks, contemporaneous with the subduction of the Neo-Tethyan Ocean beneath the Pontides. The studied volcanic rocks were enriched in the large-ion lithophile and light rare earth element contents, with pronounced depletion in the contents of high-field-strength elements. Chondrite-normalised rare earth element patterns (LaN/LuN = 6–17) show low to medium enrichment, indicating similar sources of the rock suite. Initial 87Sr/86Sr values vary between.70615 and.70796, whereas initial 143Nd/144Nd values change between.51228 and.51249. Initial 206Pb/204Pb values vary between 18.001 and 18.349, 207Pb/204Pb values between 15.611 and 15.629 and 208Pb/204Pb values between 37.839 and 38.427. The main solidification processes involved in the evolution of the volcanic rocks consist of fractional crystallisation, with minor amounts of crustal contamination ± magma mixing. According to geochemical evidence, the shoshonitic melts in the Hamsilos volcanic rocks were possibly derived from the low degree of partial melting of a subcontinental lithospheric mantle (SCLM), while the high-K calc-alkaline melts were derived from relatively high degree of partial melting of SCLM that was enriched by fluids and/or sediments from a subduction of oceanic crust.
AtıfScopus26WoS20OpenAlex27İncele - MakaleYalnız künye2016Scopus SJRQ2Investigation of the quality and physical-geochemical characteristics of the drinking water in Gümüşhane (Turkey) city central
Sipahi, Ferkan; Uslu, Sultan
The physical (turbidity, color, smell, taste, pH, and conductivity) and geochemical properties (Ca, Mg, Na, Fe, Mn, Al, K, Cl−, HCO3 −, SO4 2−, Fe, Cu, Co, Ni, Zn, Cd, Pb, and Cr) of the drinking water in Gümüşhane city center were determined. This city center constitutes the study area. The pH levels of the water samples ranged from 6.3 to 8.2, and their conductivities ranged between 240 and 900 μS. These findings were concordant with the drinking water standards of the Turkey Standard Institute and the World Health Organization. The hardness of the water samples in the study area was between 18.1 and 115.1 °Fr. These samples were classified as extremely hard, hard, and quite hard. In addition, an assessment using the criteria for Inland Surface Water Classification indicated that considering certain parameters (pH levels, amount of Na, SO4 2−, Fe, Mn, Al, Co, Ni, Cu, and Cr), the samples belonged to class I (high quality) water. When Cl− amount and conductivity were considered, the samples belonged to the first and second classes (less polluted) of water. The water in the study area was generally classified as carbonated and sulfated (Ca + Mg > Na + K) water classes. This water contained more weak acids than strong acids (HCO3 − + CO3 2− > Cl− + SO4 2−). The pH levels (6.3–8.2) of the water in the study area were unrelated to the varying concentrations of metals in the water. Elements such as Fe, Ni, Cd, Pb, Zn, and Cu increase in the water through the water–rock interaction in the area in which water rises or through the mixture of water with either mine or industrial wastes. In addition, several water samples belonged to an acceptable water class for drinking and usage.
AtıfScopus9WoS8OpenAlex13İncele - MakaleYalnız künye2015Scopus SJRQ4Contributions to the knowledge of the genus Vestiferum Martens, 2006 (opiliones: Nemastomatidae) from Turkey
Kurt, Kemal
Two species of the genus Vestiferum Martens, 2006 were found in Turkey. One of them, V. funebre (Redikortsev, 1936) is found in Turkey for the first time. The other species V. alatum Martens, 2006 is recorded from a new locality in Turkey. Both species were collected from the northern part of Turkey. Their descriptions, characteristic features, distributions and digital and SEM photographs are presented.
AtıfScopus1WoS1İncele - MakaleYalnız künye2015Scopus SJRQ4A new species and a new record of the Genus Rilaena Šilhavý, 1965 (Opiliones: Phalangiidae) from Turkey
Kurt, Kemal
Two harvestmen species were collected from Trabzon Province in Turkey. Rilaena ermani sp. n. is described as new to science, and Rilaena zakatalica Snegovaya & Chemeris, 2005 is recorded for the first time in Turkey. Detailed descriptions and illustrations of new species are provided. Differences between the new species and related species are discussed. In addition, illustrations of new record are also presented.
AtıfScopus4WoS2OpenAlex4İncele - MakaleYalnız künye2015Scopus SJRQ3A new species of the harvestmen genus Rilaena (Opiliones: Phalangiidae) from Turkey
Kurt, Kemal
A new harvestman species, Rilaena artvinensis sp. n. (Opiliones: Phalangiidae), is described and illustrated based on males collected in north-eastern Anatolia, Turkey. The new species is similar to R. buresi (Šilhavý, 1965) and R. lenkoranica Snegovaya, 2007. The differences between these species are elaborated.
AtıfScopus6WoS3OpenAlex3İncele - MakaleAçık Erişim2015Scopus SJRQ2A new species of Zachaeus C.L. Koch from Turkey (Opiliones, Phalangiidae)
Kurt, Kemal; Koç, Halil; Yağmur, Ersen Aydın
A new species of harvestmen, Zachaeus seyyari sp. n. (Opiliones, Phalangiidae), is described and illustrated on the basis of both sexes from Şırnak Province in Turkey. Differences between the new species and related species are indicated. Photographs of its characteristic structures are also provided.
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İncele - MakaleYalnız künye2015Scopus SJRQ3Contamination assessment of heavy metals associated with an alteration area: Demirören Gumushane, NE Turkey
Vural, Alaaddin
Soil samples collected from Demirören Alteration area, Gümüshane NE Turkey were analyzed for heavy metals by using Inductively Coupled Plasma-Atomic Emission Spectrometry and Inductively Coupled Plasma-Mass Spectrometry and the contamination level of heavy metals was assessed on the basis of Geoaccumulation Index, Enrichment Factor, Pollution Index and Integrated Pollution Index. The results indicated that, in comparison with background value of upper crust, soil samples in Demirören alteration area have elevated levels of metal concentrations as a whole. High Geoaccumulation Indexes and Enrichment Factors for molybdenum, lead, selenium, bismuth, cadmium and copper in alteration area indicated that there is a considerable amount of especially molybdenum, lead and copper pollution, which mainly originate from alteration in the area.
AtıfScopus19WoS18OpenAlex19İncele - MakaleYalnız künye2015Scopus SJRQ1Accident analysis with the random parameters negative binomial panel count data model
Coruh, Emine; Bilgic, Abdulbaki; Tortum, Ahmet
We analyzed factors affecting the frequency of accident counts in 81 cities over a three-year period (2008-2010) with monthly data using random-parameters negative binomial panel count data models. Among models considered, the random parameters model with the correlated coefficients outperformed the other models and was found to fit the data best with almost a perfect prediction of the conditional mean level. Most of variables used to control for the variation in the frequency of accident counts play crucial role with higher significance levels. Also, marginal effects and elasticity estimates were derived to get more insight into the effects of percent and unit changes in the dependent variable in response to changes in the exogenous variables.
AtıfScopus104WoS98OpenAlex99İncele - MakaleYalnız künye2015Scopus SJRQ2Evaluation of cadastre renovation studies in Turkey
Döner, F.
In Turkey, cadastral surveys have been carried out by various measurement techniques, at different standards and based on different legislation. Consequently, one of the most important problems with the cadastre is that approximately half of the current cadastral maps are insufficient to meet the expectations of today’s modern cadastre. In order to resolve the problem and renew the cadastral maps, the General Directorate of Land Registry and Cadastre commenced the Land Registry and Cadastre Modernization Project in 2009. Within the scope of the project, it is intended that 10 million parcels will be renewed by the end of 2014. This study aims to evaluate the cadastre renovation studies in Turkey with respect to their legal and technical aspects using a case study area. Results show that cadastre renovation studies may be insufficient to enrich and update the cadastral data. As a solution, legal amendments should be made in the Cadastre Law in a manner that will allow a new cadastral survey to be performed.
AtıfScopus12WoS14OpenAlex14İncele - MakaleYalnız künye2015Scopus SJRQ3The effects of land use type on soil erodibilty indices in Galyan-Atasu Dam Watershed, Trabzon, N.E. Turkey
Yilmaz, Murat; Usta, Ayhan; Çakir, Günay; Kahveci, Seda Nur Ince
Erodibility indices together with other soil properties of Atasu Dam watershed in Trabzon, Turkey, were analyzed according to land use regimes (grassland, cultivated land, coniferous forest land and broadleaf forest land) and the granite parent material from which the soil develops. The findings could be applied to future management plans with the aim of enhancing the ability of Atasu Dam to supply water for drinking, domestic use and irrigation to the region. Forty sample plots having the same northern aspect were selected from bordering lands. Cross-section soil samples from depth levels of 0-10 cm and 10-30 cm were gathered from the selected sites. Particle size distribution, soil organic matter (SOM), dispersion ratio (DR), erosion ratio (ER), colloid-moisture equivalent ratio (C-MER), structural stability index (SSI), water dispersible clay (WDC), clay dispersion ratio (CDR), clay flocculation index (CFI), exchangeable cations, exchangeable sodium ratio (ESR), sodium adsorption ratio (SAR) and soil reaction (pH) analyses were performed. A variance analysis was carried out in order to determine if the obtained results varied according to land use type. Soil samples from a variety of sites in areas with granite as parent material were applied to erodibility indices and the sites were found to be susceptible to erosion. Some other characteristics were also found to be effective on the erodibility indices, including the relationship of soil organics, which was also considered to be to a factor of interest in this study. Soils that were developed from granite parent material in areas covered by forest were observed to be more susceptible to erosion. These results were fairly significant in the context of the study area of the Galyan-Atasu Dam watershed. This study suggests that incorporating these findings in planning and management-related activities can potentially lead to improvement of the basin and contribute to the economic life of the dam.
AtıfScopus5WoS7İncele - MakaleAçık Erişim2015Scopus SJRQ4Two new records for Turkish harvestmen Fauna (Arachnida: Opiliones)
Kurt, Kemal; Koç, Halil; Yaʇmur, Ersen Aydin
Two harvestmen species, Mediostoma haasi (Roewer, 1953) and Phalangium armatum Snegovaya, 2005, are recorded in Turkey for the first time. Their description, characteristic features, distributions, measurements and photographs of genitalia and general habitus of both sexes are presented.
AtıfScopus6WoS5OpenAlex6İncele - MakaleYalnız künye2015Scopus SJRQ4A new species of the genus homolophus (Opiliones, Phalangiidae) from Turkey
Kurt, Kemal
A new species, Homolophus snegovayae sp. nov. (Opiliones, Phalangiidae), is described and illustrated based on a male and females collected in southeast Anatolia, Turkey. Differences between the new species and related species are discussed. Photographs of characteristic structures are also provided.
AtıfScopus2OpenAlex1İncele - MakaleYalnız künye2015Scopus SJRQ1Geochronology, geochemistry, and petrogenesis of the Eocene Bayburt intrusions, Eastern Pontides, NE Turkey: Evidence for lithospheric mantle and lower crustal sources in the high-K calc-alkaline magmatism
Kaygusuz, Abdullah; Öztürk, Mürşit
Eocene I-type plutons are widespread in the Eastern Pontides, Northeastern Turkey. Geochemical and isotopic results on two Eocene intrusive bodies located in the southern zone of the Eastern Pontides were utilized to achieve a proper reconstruction of their origin. Based on laser ablation ICP-MS U-Pb zircon dating, Kiliçkaya and Kozluk intrusions present similar 206Pb/238U versus 207Pb/235U concordia ages of 46.75±0.79 and 46.9±0.68 Ma, respectively. Both intrusions exhibit similar petrographical, geochemical, and isotopical features, and contain abundant mafic microgranular enclaves (MMEs). The intrusive rocks are composed of diorite, tonalite, and granodiorite, whereas MMEs are composed of diorite. Both the intrusive rocks and the MMEs are I-type, high-K calc-alkaline in composition and display a metaluminous character. They are enriched in large-ion lithophile and light rare-earth elements and are depleted in high-field strength elements. The intrusive rocks show moderate variation in 87Sr/86Sr(i) (0.70531-0.70576), εNd(i) (+0.3 to -0.5), and δ18O values (+6.6 to +6.9), as well as Nd model ages (0.73-0.82Ga). Their Pb isotopic ratios are 206Pb/204Pb=18.67-18.86, 207Pb/204Pb=15.61-15.62, and 208Pb/204Pb=38.62-39.03. Although the isotope signatures of MMEs (87Sr/86Sr(i)=0.70528-0.70561; εNd(i)=+0.7 to -0.3; δ18O=+6.7 to +6.8) are significantly similar to those of the host rocks, the MMEs are characterized by relatively low contents of SiO2 (57-59wt.%), low aluminum saturation index (0.8-0.9), and high Mg numbers (31-36). All of these data suggest magma generation by mixing of enriched lithospheric mantle- and lower crustal-derived melts. Moreover, Sr-Nd isotopic modeling reveals ~17% to 23% lower crustal magma contribution to the mantle component.
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