Seyitgazi and Han districts,located in the south of Eskişehir in Central Anatolia,in western Türkiye,host interesting landforms,such as steep slopes,mesas and butte structures,fault-guided slopes,valleys,fairy ch...Seyitgazi and Han districts,located in the south of Eskişehir in Central Anatolia,in western Türkiye,host interesting landforms,such as steep slopes,mesas and butte structures,fault-guided slopes,valleys,fairy chimneys,castle koppies,pillars,weathered rock blocks,perched rocks,cavernous weathering features,grooves,and gnammas,formed on tuffs in semi-arid to semi-humid climatic conditions,as well as geoarchaeological remains belonging to various civilisations,primarily the Phrygians(including rock-cut tombs and settlements,fortresses,rock churches,façades,altars,and niches).This study aims at identifying these remarkable landforms that host cultural heritage and revealing the geoheritage value and geotourism potential of the region.The data obtained from the fieldwork were evaluated using the methodology proposed by Pereira and Pereira in 2010,and 26 geomorphosites were selected from 61 potential sites using this method.The analysis results revealed that although the region hosts numerous geomorphosites with high scientific,cultural,aesthetic,and ecological value,the overall levels of protection and touristic use of these landforms are generally low.Indeed,the area,which has the potential to be an important tourism region in the future,faces problems such as infrastructure deficiencies,transportation difficulties,lack of promotion,weaknesses in accommodation services,and destruction of geoheritage.These results highlight the importance of implementing sustainable geotourism strategies that are compatible with the region’s unique geoheritage.In this respect,this study is among the first to comprehensively inventory and assess the geomorphosites of Mountainous Phrygia,contributing to regional geoconservation and sustainable tourism development.展开更多
The Afyon-Akşehir and Sinanpaşa grabens,located in the eastern part of the Akşehir-Simav Fault System,are important sedimentary basins in the western Anatolia,Türkiye.This region,particularly the western of Afyon...The Afyon-Akşehir and Sinanpaşa grabens,located in the eastern part of the Akşehir-Simav Fault System,are important sedimentary basins in the western Anatolia,Türkiye.This region,particularly the western of Afyon-Akşehir Graben,is a significant region known for its geothermal potential.The study focuses on analyzing gravity data to identify structural elements and examine the geological structures in the basins.The edge detection and enhancement techniques such as total horizontal gradient,tilt angle of the total horizontal gradient,enhanced dip angle and curvature analysis were used to investigate the structural lineaments in the area.Furthermore,2D/3D gravity modeling techniques were utilized to investigate the sedimentary depths of the Afyon-Akşehir and Sinanpaşa grabens.Based on the findings from the edge detection studies,three distinct linear features were highlighted in addition to previously identified geological structures.3D gravity inversion modeling reveals sedimentary basin depths of up to 470 m in Sinanpaşa Graben and 720 m in the western Afyon-Akşehir Graben.As a result of the structural mapping and 2D/3D gravity modeling studies,a structural uplift that may be linked to geothermal activity was detected among the local depressions in the Afyon-Akşehir Graben.The obtained features may be of potential interest for geothermal exploration;therefore,further investigations using additional geophysical data are recommended.展开更多
Dipyridyl-functionalized salan ligand （H2L） was synthesized to construct a mono- nuclear Cu（salan） complex, [CuL（CHaCN）2（H2O）6] （1）, through diffusion method. 1 was characterized by IR, microanalysis, TGA an...Dipyridyl-functionalized salan ligand （H2L） was synthesized to construct a mono- nuclear Cu（salan） complex, [CuL（CHaCN）2（H2O）6] （1）, through diffusion method. 1 was characterized by IR, microanalysis, TGA and single-crystal X-ray crystallography. It crystallizes in orthorhombic space group P21212 with a = 17.6640（16）, b = 18.6750（16）, c = 16.0625（14） A, V = 5298.6（8） A3, Z = 4, Mr = 994.70, Dc = 1.247 g/cm3, F（000） = 2116,μ = 0.469 mm^-1, GOOF = 1.073, the final R = 0.0499 and wR = 0.1395 for 11816 observed reflections with 1 〉 2or（/）. In the title compound, the basic building unit consists of two mononuclear Cu（salan） which orient in opposite directions and are locked together via weak intermolecular C-H...π interactions. The adjacent building units are further directed into a 2D supramolecular network structure via H bonds, between which reside the vip acetonitrile and water molecules. In addition, the presence of exposed NH-functionalities and coordination unsaturated Cu centers in 1 provide a great chance to recognize tartaric acids through CD titration in solution.展开更多
The G ksun Ophiolites in Do an ehir area (Malatya-Southern Turkey) contain corundum mineralizations with significant gem-quality (ruby). Modal mineralogical composition of ruby-bearing rocks consists of hornblende (...The G ksun Ophiolites in Do an ehir area (Malatya-Southern Turkey) contain corundum mineralizations with significant gem-quality (ruby). Modal mineralogical composition of ruby-bearing rocks consists of hornblende (65%-70 %), plagioclase (20%-25%), green garnet (4%-5 %), ruby (2%-3%), and opaque minerals (<1%). Although ruby shows varying colors in the groundmass, it is generally colorless and rarely very pale pink and has high relief. It has no cleavage but rotund fractures. It has highest interference colors and twinning in some poly-prismatic crystals under the microscope. Crystal sizes range from 2x10 mm up to 30x50 mm. The most remarkable properties are red to pink in color, low to medium transparency, medium to big crystal sizes, lamellar and deformation twinning, secondary liquid feathers, hollow tubes, mineral inclusions, asterism, high birefringence and refractive indices and specific gravity. Rubies show crimson red cathodoluminescence colors activated by Cr3+ in the crystal structure, which is confirmed by the Electron Probe Microanalyses (EPMA). Tectonic setting, geological environment, petrographical, mineralogical, geochemical and gemological characteristics of rubies suggest that the Do an ehir ruby mineralization can be classified into the amphibolite-hosted type of corundum deposits of Tanzania.展开更多
Turkey is an area where climate changes immediately, vegetation, or land gets different in a short distance. Geological and lithological features show diversity. Also, our country’s territorial existence and diversit...Turkey is an area where climate changes immediately, vegetation, or land gets different in a short distance. Geological and lithological features show diversity. Also, our country’s territorial existence and diversity also bring about different land use conditions. Therefore, land capability also differs from each other. Nevertheless, the classification of land capability used in Turkey is the classification of land capability for agricultural lands prepared by the United States (USA) in 1961. Due to this, [1] have made suggestion on a new classification of land capability considering our country’s geographical conditions. In this study, comparing the land capability with the classification carrying out in our country, the classification which Atalay and Gündüzoğlu suggested, has been aimed. Working method has been established according to regional approach and field observations have been done. In preparing the cartographical material, ArcGIS 10.3 has been used. The map of this study as a material topography, physical map, slope, aspect, the usage of the land, ground, geology, land capability, geomorphology, temperature, and precipitation has been examined, meteorological data have been appreciated. According to the findings attained, Eskişehir’s map of land capability has been done through the criteria of the suggestions of Atalay and Gündüzoğlu. As a result, it has been understood that there is a difference between the USA land capability that applied in Eskişehir and Atalay and Gündüzoğlu’s criteria. In the study, it is suggested to determine the land capabilities again considering the ecological conditions of Turkey.展开更多
A novel alkaline earth-based chiral metal-organic framework 1 {[Ba（1.5）L（μ-OH2）2（DMF）2（H2O）]·DMF·1.5 H2O}n was synthesized from C2-symmetric TADDOL-based ligand H4L and structurally characterized by...A novel alkaline earth-based chiral metal-organic framework 1 {[Ba（1.5）L（μ-OH2）2（DMF）2（H2O）]·DMF·1.5 H2O}n was synthesized from C2-symmetric TADDOL-based ligand H4L and structurally characterized by single-crystal and powder X-ray diffraction, Fourier-transform infrared spectra（FTIR）, solid-state circular dichroism（CD） and thermal gravimetric analysis（TGA）. 1 crystallizes in monoclinic space group C2 with a = 43.5105（12）, b = 9.4781（3）, c = 15.5620（4） A°, β = 99.7770（10）o, V = 6324.5（3） A°^3, Z = 2, Mr = 1434.18 g/mol, Dc = 1.506 g/cm^3, F（000） = 2904, GOOF = 1.026, the final R = 0.0358 and w R = 0.0952 for 21747 observed reflections with I 〉 2σ（I）. Each Ba3 cluster in 1 is linked by eight ligands and each ligand with one coordination-free carboxyl oxygen, O（5）, is coordinated to four Ba3 clusters to generate a 3D network. In addition, the photoluminescence of 1 and H4L was also investigated.展开更多
Water resource management is critical to Turkey’s economy and environment. The country has about 112 billion m<sup>3</sup> per year of economically exploitable water. However, population growth, climate c...Water resource management is critical to Turkey’s economy and environment. The country has about 112 billion m<sup>3</sup> per year of economically exploitable water. However, population growth, climate change and pollution of water bodies are putting increasing pressure on these resources. In this context, understanding the contribution of water to the economy and environment is crucial for its conservation. To meet this need, the World Bank launched a program aiming at improving valuation and accounting systems of natural resources in Turkey. As part of this program, this article estimates in monetary terms the economic value of water in Bey?ehir Lake, the largest freshwater lake in Turkey. Valuation is based on the Total Economic Value concept, which includes use and non-use values. The results show that the economic value of water is about seven times higher than its financial value. In addition, the economic value of water allocated for municipal use (TL5/m<sup>3</sup>) is substantially greater than that supplied for irrigation (TL0.5/m<sup>3</sup>). The analysis suggests that allocation of water from Bey?ehir Lake among different uses is inefficient. To validate this conclusion and improve allocation, a more comprehensive assessment of the economic benefits of water resources is needed, particularly of water supply for irrigation, municipal use, recreation and biodiversity. The analysis also indicates that economic valuation can be a powerful tool to improve water management at the river basin level.展开更多
文摘Seyitgazi and Han districts,located in the south of Eskişehir in Central Anatolia,in western Türkiye,host interesting landforms,such as steep slopes,mesas and butte structures,fault-guided slopes,valleys,fairy chimneys,castle koppies,pillars,weathered rock blocks,perched rocks,cavernous weathering features,grooves,and gnammas,formed on tuffs in semi-arid to semi-humid climatic conditions,as well as geoarchaeological remains belonging to various civilisations,primarily the Phrygians(including rock-cut tombs and settlements,fortresses,rock churches,façades,altars,and niches).This study aims at identifying these remarkable landforms that host cultural heritage and revealing the geoheritage value and geotourism potential of the region.The data obtained from the fieldwork were evaluated using the methodology proposed by Pereira and Pereira in 2010,and 26 geomorphosites were selected from 61 potential sites using this method.The analysis results revealed that although the region hosts numerous geomorphosites with high scientific,cultural,aesthetic,and ecological value,the overall levels of protection and touristic use of these landforms are generally low.Indeed,the area,which has the potential to be an important tourism region in the future,faces problems such as infrastructure deficiencies,transportation difficulties,lack of promotion,weaknesses in accommodation services,and destruction of geoheritage.These results highlight the importance of implementing sustainable geotourism strategies that are compatible with the region’s unique geoheritage.In this respect,this study is among the first to comprehensively inventory and assess the geomorphosites of Mountainous Phrygia,contributing to regional geoconservation and sustainable tourism development.
文摘The Afyon-Akşehir and Sinanpaşa grabens,located in the eastern part of the Akşehir-Simav Fault System,are important sedimentary basins in the western Anatolia,Türkiye.This region,particularly the western of Afyon-Akşehir Graben,is a significant region known for its geothermal potential.The study focuses on analyzing gravity data to identify structural elements and examine the geological structures in the basins.The edge detection and enhancement techniques such as total horizontal gradient,tilt angle of the total horizontal gradient,enhanced dip angle and curvature analysis were used to investigate the structural lineaments in the area.Furthermore,2D/3D gravity modeling techniques were utilized to investigate the sedimentary depths of the Afyon-Akşehir and Sinanpaşa grabens.Based on the findings from the edge detection studies,three distinct linear features were highlighted in addition to previously identified geological structures.3D gravity inversion modeling reveals sedimentary basin depths of up to 470 m in Sinanpaşa Graben and 720 m in the western Afyon-Akşehir Graben.As a result of the structural mapping and 2D/3D gravity modeling studies,a structural uplift that may be linked to geothermal activity was detected among the local depressions in the Afyon-Akşehir Graben.The obtained features may be of potential interest for geothermal exploration;therefore,further investigations using additional geophysical data are recommended.
基金supported by NSFC-21025103 and 20971085"973" Programs (2007CB209701 and 2009CB930403)+1 种基金Shanghai Science and Technology Committee (10DJ1400100)the Key Project of State Education Ministry
文摘Dipyridyl-functionalized salan ligand （H2L） was synthesized to construct a mono- nuclear Cu（salan） complex, [CuL（CHaCN）2（H2O）6] （1）, through diffusion method. 1 was characterized by IR, microanalysis, TGA and single-crystal X-ray crystallography. It crystallizes in orthorhombic space group P21212 with a = 17.6640（16）, b = 18.6750（16）, c = 16.0625（14） A, V = 5298.6（8） A3, Z = 4, Mr = 994.70, Dc = 1.247 g/cm3, F（000） = 2116,μ = 0.469 mm^-1, GOOF = 1.073, the final R = 0.0499 and wR = 0.1395 for 11816 observed reflections with 1 〉 2or（/）. In the title compound, the basic building unit consists of two mononuclear Cu（salan） which orient in opposite directions and are locked together via weak intermolecular C-H...π interactions. The adjacent building units are further directed into a 2D supramolecular network structure via H bonds, between which reside the vip acetonitrile and water molecules. In addition, the presence of exposed NH-functionalities and coordination unsaturated Cu centers in 1 provide a great chance to recognize tartaric acids through CD titration in solution.
文摘The G ksun Ophiolites in Do an ehir area (Malatya-Southern Turkey) contain corundum mineralizations with significant gem-quality (ruby). Modal mineralogical composition of ruby-bearing rocks consists of hornblende (65%-70 %), plagioclase (20%-25%), green garnet (4%-5 %), ruby (2%-3%), and opaque minerals (<1%). Although ruby shows varying colors in the groundmass, it is generally colorless and rarely very pale pink and has high relief. It has no cleavage but rotund fractures. It has highest interference colors and twinning in some poly-prismatic crystals under the microscope. Crystal sizes range from 2x10 mm up to 30x50 mm. The most remarkable properties are red to pink in color, low to medium transparency, medium to big crystal sizes, lamellar and deformation twinning, secondary liquid feathers, hollow tubes, mineral inclusions, asterism, high birefringence and refractive indices and specific gravity. Rubies show crimson red cathodoluminescence colors activated by Cr3+ in the crystal structure, which is confirmed by the Electron Probe Microanalyses (EPMA). Tectonic setting, geological environment, petrographical, mineralogical, geochemical and gemological characteristics of rubies suggest that the Do an ehir ruby mineralization can be classified into the amphibolite-hosted type of corundum deposits of Tanzania.
文摘Turkey is an area where climate changes immediately, vegetation, or land gets different in a short distance. Geological and lithological features show diversity. Also, our country’s territorial existence and diversity also bring about different land use conditions. Therefore, land capability also differs from each other. Nevertheless, the classification of land capability used in Turkey is the classification of land capability for agricultural lands prepared by the United States (USA) in 1961. Due to this, [1] have made suggestion on a new classification of land capability considering our country’s geographical conditions. In this study, comparing the land capability with the classification carrying out in our country, the classification which Atalay and Gündüzoğlu suggested, has been aimed. Working method has been established according to regional approach and field observations have been done. In preparing the cartographical material, ArcGIS 10.3 has been used. The map of this study as a material topography, physical map, slope, aspect, the usage of the land, ground, geology, land capability, geomorphology, temperature, and precipitation has been examined, meteorological data have been appreciated. According to the findings attained, Eskişehir’s map of land capability has been done through the criteria of the suggestions of Atalay and Gündüzoğlu. As a result, it has been understood that there is a difference between the USA land capability that applied in Eskişehir and Atalay and Gündüzoğlu’s criteria. In the study, it is suggested to determine the land capabilities again considering the ecological conditions of Turkey.
基金supported by NSFC-21371119,21431004,21401128,21522104,and 21620102001)“973”Program(Grants 2014CB932102 and 2016YFA0203400)the Shanghai“Eastern Scholar”Program SSTC-14YF1401300
文摘A novel alkaline earth-based chiral metal-organic framework 1 {[Ba（1.5）L（μ-OH2）2（DMF）2（H2O）]·DMF·1.5 H2O}n was synthesized from C2-symmetric TADDOL-based ligand H4L and structurally characterized by single-crystal and powder X-ray diffraction, Fourier-transform infrared spectra（FTIR）, solid-state circular dichroism（CD） and thermal gravimetric analysis（TGA）. 1 crystallizes in monoclinic space group C2 with a = 43.5105（12）, b = 9.4781（3）, c = 15.5620（4） A°, β = 99.7770（10）o, V = 6324.5（3） A°^3, Z = 2, Mr = 1434.18 g/mol, Dc = 1.506 g/cm^3, F（000） = 2904, GOOF = 1.026, the final R = 0.0358 and w R = 0.0952 for 21747 observed reflections with I 〉 2σ（I）. Each Ba3 cluster in 1 is linked by eight ligands and each ligand with one coordination-free carboxyl oxygen, O（5）, is coordinated to four Ba3 clusters to generate a 3D network. In addition, the photoluminescence of 1 and H4L was also investigated.
文摘Water resource management is critical to Turkey’s economy and environment. The country has about 112 billion m<sup>3</sup> per year of economically exploitable water. However, population growth, climate change and pollution of water bodies are putting increasing pressure on these resources. In this context, understanding the contribution of water to the economy and environment is crucial for its conservation. To meet this need, the World Bank launched a program aiming at improving valuation and accounting systems of natural resources in Turkey. As part of this program, this article estimates in monetary terms the economic value of water in Bey?ehir Lake, the largest freshwater lake in Turkey. Valuation is based on the Total Economic Value concept, which includes use and non-use values. The results show that the economic value of water is about seven times higher than its financial value. In addition, the economic value of water allocated for municipal use (TL5/m<sup>3</sup>) is substantially greater than that supplied for irrigation (TL0.5/m<sup>3</sup>). The analysis suggests that allocation of water from Bey?ehir Lake among different uses is inefficient. To validate this conclusion and improve allocation, a more comprehensive assessment of the economic benefits of water resources is needed, particularly of water supply for irrigation, municipal use, recreation and biodiversity. The analysis also indicates that economic valuation can be a powerful tool to improve water management at the river basin level.
