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2014

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Articles 11281 - 11310 of 12299

Full-Text Articles in Physical Sciences and Mathematics

Antibody-Drug Gold Nanoantennas With Raman Spectroscopic Fingerprints For In Vivo Tumour Theranostics, Joao Conde, Chenchen Bao, Daxiang Cui, Pedro Baptista, Furong Tian Jan 2014

Antibody-Drug Gold Nanoantennas With Raman Spectroscopic Fingerprints For In Vivo Tumour Theranostics, Joao Conde, Chenchen Bao, Daxiang Cui, Pedro Baptista, Furong Tian

Articles

Inspired by the ability of SERS nanoantennas to provide an integrated platform to enhance disease targeting in vivo, we developed a highly sensitive probe for in vivo tumoral recognition with the capacity to target specific cancer biomarkers such as epidermal growth factor receptors (EGFR) on human cancer cells and xenograft tumour models. Here, we used ~90 nm gold nanoparticles capped by a Raman reporter, encapsulated and entrapped by larger polymers and a FDA antibody-drug conjugate –Cetuximab (Erbitux®) – that specifically targets EGFR and turns off a main signalling cascade for cancer cells to proliferate and survive. These drug/SERS gold nanoantennas …

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Stm Study Of Pulsed Laser Assisted Growth Of Ge Quantum Dot On Si(1 0 0)-(2 × 1), Ali Orguz Er, Hani E. Elsayed-Ali Jan 2014

Stm Study Of Pulsed Laser Assisted Growth Of Ge Quantum Dot On Si(1 0 0)-(2 × 1), Ali Orguz Er, Hani E. Elsayed-Ali

Electrical & Computer Engineering Faculty Publications

Ge quantum dot formation on Si(1 0 0)-(2 × 1) by nanosecond pulsed laser deposition under laser excitation was investigated. Scanning tunneling microscopy was used to probe the growth mode and morphology. Excitation was performed during deposition using laser energy density of 25-100 mJ/cm 2. Faceted islands were achieved at a substrate temperature of ∼250 °C only when using laser excitation. The island morphology changes with increased laser excitation energy density although the faceting of the individual islands remains the same. The size of the major length of islands increases with the excitation laser energy density. A purely electronic …

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Measurement Of Double-Polarization Asymmetries In The Quasielastic ³→He (→E, E' D) Process, M. Mihovilovic, G. Jin, M. Canan, S. Golge, R. Schiavilla, Jefferson Lab Hall A. Collaboration Jan 2014

Measurement Of Double-Polarization Asymmetries In The Quasielastic ³→He (→E, E' D) Process, M. Mihovilovic, G. Jin, M. Canan, S. Golge, R. Schiavilla, Jefferson Lab Hall A. Collaboration

Physics Faculty Publications

We present a precise measurement of double-polarization asymmetries in the ³→He (→e, e' d) reaction. This particular process is a uniquely sensitive probe of hadron dynamics in 3He and the structure of the underlying electromagnetic currents. The measurements have been performed in and around quasielastic kinematics at Q2 = 0.25(GeV/c)2 for missing momenta up to 270 MeV/c. The asymmetries are in fair agreement with the state-of-the-art calculations in terms of their functional dependencies on pm and ω, but are systematically offset. Beyond the region of the quasielastic peak, the discrepancies become even more pronounced. Thus, our …

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Measurement Of "Pretzelosity" Asymmetry Of Charged Pion Production In Semi-Inclusive Deep Inelastic Scattering On A Polarized ³He Target, Y. Zhang, X. Qian, K. Allada, C. Dutta, M. Canan, Jefferson Lab Hall A Collaboration Jan 2014

Measurement Of "Pretzelosity" Asymmetry Of Charged Pion Production In Semi-Inclusive Deep Inelastic Scattering On A Polarized ³He Target, Y. Zhang, X. Qian, K. Allada, C. Dutta, M. Canan, Jefferson Lab Hall A Collaboration

Physics Faculty Publications

An experiment to measure single-spin asymmetries of semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized 3He target was performed at Jefferson Laboratory in the kinematic region of 0.16 < x < 0.35 and 1.4 < Q2 < 2.7 GeV2. Pretzelosity asymmetries on 3He, which are expressed as the convolution of the h┴1T transverse-momentum-dependent distribution functions and the Collins fragmentation functions in the leading order, were measured for the first time. Under the effective polarization approximation, we extracted the corresponding neutron asymmetries from the measured 3He asymmetries and cross-section ratios between the proton and 3He. Our results show that …

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Question 1: Trash To Fuel; Question 2: Planes From Cans, Larry Weinstein Jan 2014

Question 1: Trash To Fuel; Question 2: Planes From Cans, Larry Weinstein

Physics Faculty Publications

The article presents questions concerning trash used as fuel and building airplanes from recycled soda cans.

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Single Spin Asymmetries In Charged Kaon Production From Semi-Inclusive Deep Inelastic Scattering On A Transversely Polarized He-3 Target, Y. X. Zhao, Y. Wang, K. Allada, K. Aniol, J. R. M. Annand, T. Averett, F. Benmokhtar, W. Bertozzi, P. C. Bradshaw, M. Canan Jan 2014

Single Spin Asymmetries In Charged Kaon Production From Semi-Inclusive Deep Inelastic Scattering On A Transversely Polarized He-3 Target, Y. X. Zhao, Y. Wang, K. Allada, K. Aniol, J. R. M. Annand, T. Averett, F. Benmokhtar, W. Bertozzi, P. C. Bradshaw, M. Canan

Physics Faculty Publications

We report the first measurement of target single spin asymmetries of charged kaons produced in semi-inclusive deep inelastic scattering of electrons off a transversely polarized 3He target. Both the Collins and Sivers moments, which are related to the nucleon transversity and Sivers distributions, respectively, are extracted over the kinematic range of0.1 < xbj < 0.4for K+ and K− production. While the Collins and Sivers moments for K+ are consistent with zero within the experimental uncertainties, both moments for K− favor negative values. The Sivers moments are compared to the theoretical prediction from a phenomenological fit to the world data. While …

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Employing Twin Crabbing Cavities To Address Variable Transverse Coupling Of Beams In The Meic, A. Castilla, V. S. Morozov, T. Satogata, J. R. Delayen Jan 2014

Employing Twin Crabbing Cavities To Address Variable Transverse Coupling Of Beams In The Meic, A. Castilla, V. S. Morozov, T. Satogata, J. R. Delayen

Physics Faculty Publications

The design strategy of the Medium Energy Electron-Ion Collider (MEIC) at Jefferson Lab contemplates both matching of the emittance aspect ratios and a 50 mrad crossing angle along with crab crossing scheme for both electron and ion beams over the energy range (√s=20-70 GeV) to achieve high luminosities at the interaction points (IPs). However, the desired locations for placing the crabbing cavities may include regions where the transverse degrees of freedom of the beams are coupled with variable coupling strength that depends on the collider rings’ magnetic elements (solenoids and skew quadrupoles). In this work we explore the feasibility of …

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Precision Measurements Of G¹ Of The Proton And The Deuteron With 6 Gev Electrons, Y. Prok, K. P. Adhikari, D. Adikaram, M. J. Amaryan, G. E. Dodge, N. Guler, A. Klein, S. Koirala, S. E. Kuhn, Clas Collaboration Jan 2014

Precision Measurements Of G¹ Of The Proton And The Deuteron With 6 Gev Electrons, Y. Prok, K. P. Adhikari, D. Adikaram, M. J. Amaryan, G. E. Dodge, N. Guler, A. Klein, S. Koirala, S. E. Kuhn, Clas Collaboration

Physics Faculty Publications

The inclusive polarized structure functions of the proton and deuteron, gp1 and gd1 , were measured with high statistical precision using polarized 6 GeV electrons incident on a polarized ammonia target in Hall B at Jefferson Laboratory. Electrons scattered at laboratory angles between 18 and 45 degrees were detected using the CEBAF Large Acceptance Spectrometer (CLAS). For the usual deep inelastic region kinematics, Q2 > 1 GeV2 and the final-state invariant mass W >2 GeV, the ratio of polarized to unpolarized structure functions g1/F1 is found to be nearly independent of Q …

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Data Analysis Techniques, Differential Cross Sections, And Spin Density Matrix Elements For The Reaction 𝛾p → Φp, K. P. Adhikari, D. Adikaram, M. J. Amaryan, C. E. Hyde, S. Koirala, S. E. Kuhn, M. Mayer, I. Niculescu, Et Al., The Clas Collaboration Jan 2014

Data Analysis Techniques, Differential Cross Sections, And Spin Density Matrix Elements For The Reaction 𝛾p → Φp, K. P. Adhikari, D. Adikaram, M. J. Amaryan, C. E. Hyde, S. Koirala, S. E. Kuhn, M. Mayer, I. Niculescu, Et Al., The Clas Collaboration

Physics Faculty Publications

High-statistics measurements of differential cross sections and spin density matrix elements for the reaction γp→ϕp have been made using the CLAS detector at Jefferson Lab. We cover center-of-mass energies (√s) from 1.97 to 2.84 GeV, with an extensive coverage in the ϕ production angle. The high statistics of the data sample made it necessary to carefully account for the interplay between the ϕ natural lineshape and effects of the detector resolution, that are found to be comparable in magnitude. We study both the charged- (ϕ→K+K−) and neutral- (ϕ→K0SK0L) K→ …

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Temporal Evolution Of The Water Characteristics In The Bays Along The Eastern Coast Of The Aegean Sea: Saros, İzmir, And Gökova Bays, Canan Eronat, Erdem Sayin Jan 2014

Temporal Evolution Of The Water Characteristics In The Bays Along The Eastern Coast Of The Aegean Sea: Saros, İzmir, And Gökova Bays, Canan Eronat, Erdem Sayin

Turkish Journal of Earth Sciences

The seasonal and interannual variability of the local hydrography in 3 bays (Saros, İzmir, and Gökova bays) along the eastern coast of the Aegean Sea are investigated using data sets collected from 1991 to 2010. The data cover the last major deep-water formation episodes and the Eastern Mediterranean Transient (EMT) relaxation period. Aegean Sea hydrology and water mass characteristics influence the water properties of the bays. The data suggest that Saros Bay (North Aegean Sea), İzmir Bay (Central Aegean Sea), and Gökova Bay (South Aegean Sea) have different physical processes and water characteristics. They have their own dynamics independent from …

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Eocene To Early Oligocene Turbidite Sedimentation In The Se Aegean (Karpathos Island, Se Greece): Stratigraphy, Facies Analysis, Nannofossil Study,And Possible Hydrocarbon Potential, George Pantopoulos, Avraam Zelilidis Jan 2014

Eocene To Early Oligocene Turbidite Sedimentation In The Se Aegean (Karpathos Island, Se Greece): Stratigraphy, Facies Analysis, Nannofossil Study,And Possible Hydrocarbon Potential, George Pantopoulos, Avraam Zelilidis

Turkish Journal of Earth Sciences

Paleogene turbidite deposits that outcrop at the SE Aegean (Karpathos Island, SE Greece) were investigated using sedimentological, biostratigraphical, and organic geochemical techniques. Results indicate that turbidite sedimentation in the area took place from the Early Eocene (NP12-14) to Late Eocene-Early Oligocene (NP20-21). Six different units were recognized in the turbidite succession based on sedimentological characteristics, outcropping in 2 major areas of the island (1 in the north and 1 in the south) and having a thickness of less than 1000 m. Deposition and spatial arrangement of sedimentary facies was affected by the already deformed carbonate substratum and changes in the …

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Toxic Element Contamination In Waters From The Massive Sulfide Deposits And Wastes Around Giresun, Turkey, Necati̇ Karakaya, Muazzez Çeli̇k Karakaya Jan 2014

Toxic Element Contamination In Waters From The Massive Sulfide Deposits And Wastes Around Giresun, Turkey, Necati̇ Karakaya, Muazzez Çeli̇k Karakaya

Turkish Journal of Earth Sciences

This study assessed the quality of water polluted with mine drainage waters, some of which is used for drinking and agriculture, in the urban areas of the Giresun region, Turkey. A total of 40 water samples were collected from the main rivers and stream, spring, and drainage waters. All samples were analyzed for physical and chemical parameters. The tectonically controlled massive sulfide deposits hosted in the Maastrichtian-Eocene magmatic rocks are either active or have been abandoned. The main ore mineral assemblages are chalcopyrite, sphalerite, galena, and pyrite. The oxidation of the sulfide minerals in the deposits and wastes has caused …

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Reservoir Characterization Of The Burqan Formation Sandstone From Midyan Basin, Northwestern Saudi Arabia, Abdulaziz Al-Laboun, Abdurrahman Al-Quraishi, Haider Zaman, Mohammed Benaafi Jan 2014

Reservoir Characterization Of The Burqan Formation Sandstone From Midyan Basin, Northwestern Saudi Arabia, Abdulaziz Al-Laboun, Abdurrahman Al-Quraishi, Haider Zaman, Mohammed Benaafi

Turkish Journal of Earth Sciences

The Early Miocene sandstone of the Burqan Formation from Midyan Basin is considered an oil-bearing unit. The outcrops of this sandstone, which are exposed in the northwestern part of the basin, have been studied through field and laboratory-based investigations. During the field work, 81 surface samples were collected for reservoir characterization. Laboratory analyses were undertaken to determine the effect of the diagenesis on the reservoir quality using integrated sedimentological, petrological, and petrophysical analyses. According to these analyses, the sandstone of Burqan Formation is predominately subarkosic and sublitharenite in nature, medium to course grained in size, rounded to subangular in shape, …

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Comparative Geochemical Study Of Soils Developed On Characteristic Black And Yellow Polymetallic Massive Sulfide Deposits In Eastern Pontides (Ne Turkey), Nezi̇hi̇ Köprübaşi, Emi̇n Çi̇ftçi̇, Sai̇t Cordan, Necla Köprübaşi, Cafer Özkul, Fatma Şi̇şman Tükel Jan 2014

Comparative Geochemical Study Of Soils Developed On Characteristic Black And Yellow Polymetallic Massive Sulfide Deposits In Eastern Pontides (Ne Turkey), Nezi̇hi̇ Köprübaşi, Emi̇n Çi̇ftçi̇, Sai̇t Cordan, Necla Köprübaşi, Cafer Özkul, Fatma Şi̇şman Tükel

Turkish Journal of Earth Sciences

The Harşit-Köprübaşı (Tirebolu) and Killik (Espiye) volcanogenic massive sulfide (VMS) deposits occur in the Eastern Pontide tectonic belt, one of the major tectonic units comprising Anatolia. They are hosted by Late Cretaceous dacitic to rhyolitic rocks overlain by thin layers of pelitic sediments. The region is considered as a metallogenic province since it is a host to numerous VMS deposits, mainly of the Kuroko type, with varying sizes and reserves and with fairly similar geochemical and mineralogical characteristics. In this study, 489 soil samples were systematically collected from both known mineralized sites and remote areas that have no indication of …

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Terebella Lapilloides Münster, 1833 From The Upper Jurassic-Lower Cretaceous İnaltı Carbonates, Northern Turkey: Its Taxonomic Position And Paleoenvironmental-Paleoecological Significance, Mustafa Yücel Kaya, Demi̇r Altiner Jan 2014

Terebella Lapilloides Münster, 1833 From The Upper Jurassic-Lower Cretaceous İnaltı Carbonates, Northern Turkey: Its Taxonomic Position And Paleoenvironmental-Paleoecological Significance, Mustafa Yücel Kaya, Demi̇r Altiner

Turkish Journal of Earth Sciences

The agglutinating annelid Terebella lapilloides Münster, 1833 is commonly encountered in reefal deposits from the Late Jurassic. This annelid is described and documented for the first time from the Upper Jurassic-Lower Cretaceous carbonates of the İnaltı Formation in the Central Pontides, Turkey. The whole İnaltı formation, 395 m in thickness, was studied near Bürnük village and 105 samples were collected along the section. The investigated thin sections reveal the shallow water and the reefal/fore-reefal character of the carbonates with coral-sponge frame-builders. The bioconstituents are accompanied by various microencrusters and microproblematica (such as Lithocodium aggregatum, Bacinella-type structures, Koskinobullina socialis, Radiomura cautica, …

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Bramatherium (Artiodactyla, Ruminantia, Giraffidae) From The Middle Siwaliks Of Hasnot, Pakistan: Biostratigraphy And Palaeoecology, Muhammad Akbar Khan, Muhammad Akhtar, Ammara Irum Jan 2014

Bramatherium (Artiodactyla, Ruminantia, Giraffidae) From The Middle Siwaliks Of Hasnot, Pakistan: Biostratigraphy And Palaeoecology, Muhammad Akbar Khan, Muhammad Akhtar, Ammara Irum

Turkish Journal of Earth Sciences

We describe here new remains of the giraffid Bramatherium, from the late Miocene-early Pliocene of Hasnot, northern Pakistan. The fossil giraffid material from Hasnot represents 2 taxa of Bramatherium, B. megacephalum and B. grande. The Hasnot locality is characterised by high proportions of ruminants, namely Boselaphini, Antilopini, Sivatheriinae, Cervini, Dorcatherium, and Dorcabune. The Hasnot fossil ruminant assemblage is fairly typical for the Siwalik province and comparisons with the Greco-Iranian-Afghan and African palaeobiological provinces indicate a late Miocene-early Pliocene age. It is suggested that local Hasnot palaeoenvironments comprised wetlands to woodland biomes, perhaps devoid of expansive dense forests.

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On The Reconstruction Of Plant Photosynthetic And Stress Physiology Across The Triassic-Jurassic Boundary, Matthew Haworth, Angela Gallagher, Elysia Sum, Marlene Hill-Donnelly, Margret Steinthorsdottir, Jennifer Mcelwain Jan 2014

On The Reconstruction Of Plant Photosynthetic And Stress Physiology Across The Triassic-Jurassic Boundary, Matthew Haworth, Angela Gallagher, Elysia Sum, Marlene Hill-Donnelly, Margret Steinthorsdottir, Jennifer Mcelwain

Turkish Journal of Earth Sciences

The Triassic-Jurassic boundary (TJB) coincides with major disruption to the carbon cycle and global warming as the Central Atlantic Magmatic Province developed. This resulted in both marine and terrestrial extinctions, with terrestrial plants thought to experience thermal stress as global temperatures and atmospheric CO_2 levels rose. As plant compression fossils typically only preserve external morphological features, it has not been possible to reconstruct plant paleophysiology in order to elucidate the mechanisms underlying plant stress and extinction. Here we present a new approach allowing us to infer the photosynthetic performance and stress physiology of fossil plants, applied to fossil Ginkgoales across …

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Experimental Investigation Of Mixtures Of Bentonite And Dredged Sediments From Chorfa Dam In Algeria, Zehour Labiod - Aloui, Habib Trouzine, Moulay Smaine Ghembaza, Tahar Nouioua, Yahya Sebaibi Jan 2014

Experimental Investigation Of Mixtures Of Bentonite And Dredged Sediments From Chorfa Dam In Algeria, Zehour Labiod - Aloui, Habib Trouzine, Moulay Smaine Ghembaza, Tahar Nouioua, Yahya Sebaibi

Turkish Journal of Earth Sciences

Geotechnical properties of dredged sediment from Chorfa dam in Algeria and their mixtures (5%, 10%, 15%, 20%, and 25%) with bentonite were investigated through a series of laboratory experimental tests in order to investigate possibilities of their usage as a barrier against the spread out of the Sebkha of Oran in the northwest of Algeria. Grain size and Atterberg limits tests, chemical and mineral analyses, and compaction, vertical swelling, and horizontal and vertical permeability tests were performed on the soils and their mixtures using tap water and the salty Sebkha water. The results indicate that the bentonite specimens remolded and …

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Appraisal Of Active Tectonics Using Dem-Based Hypsometric Integral And Trend Surface Analysis In Emilia-Romagna Apennines, Northern Italy, Saima Siddiqui, Mauro Soldati Jan 2014

Appraisal Of Active Tectonics Using Dem-Based Hypsometric Integral And Trend Surface Analysis In Emilia-Romagna Apennines, Northern Italy, Saima Siddiqui, Mauro Soldati

Turkish Journal of Earth Sciences

The hypsometric integral (HI) has generally been used to explain the stages of landscape evolution and erosional processes. It is an important tool to investigate tectonics and lithologic and climatic effects on topographic change. We analyzed the significance of the HI to investigate active tectonics in the Emilia-Romagna Apennines of northern Italy. We used a digital elevation model of 5-m spatial resolution to calculate grid-based HI values. The HI distribution does not show clear spatial patterns of high and low HI values. However, when statistical methods of local indices of spatial autocorrelation were applied, it was possible to identify clear …

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Assessment Of The Perchertal Avalanche In Tyrol, Austria, Tayfun Kurt Jan 2014

Assessment Of The Perchertal Avalanche In Tyrol, Austria, Tayfun Kurt

Turkish Journal of Earth Sciences

The present study has been conducted to analyze the Perchertal avalanche area near Bärenkopf Mountain, which has several avalanche-prone areas on its slopes, within the area of Pertisau, Tyrol, in Austria. The main focus is on identifying the characteristics of the avalanche process itself to determine the potential risk to endangered objects, which include an important road and a hotel. Another focus is to evaluate the current local hazard map. Based on the dynamic avalanche models (Samos-AT, Ramms), several important action parameters such as impact pressure, avalanche velocity, and run-out length of the Perchertal avalanche track are presented and discussed. …

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Seismic Hazard Assessment Of Turkey By Statistical Approaches, Serpi̇l Ünal, Sali̇h Çelebi̇oğlu, Bülent Özmen Jan 2014

Seismic Hazard Assessment Of Turkey By Statistical Approaches, Serpi̇l Ünal, Sali̇h Çelebi̇oğlu, Bülent Özmen

Turkish Journal of Earth Sciences

In this study, 2 probabilistic methods are presented for seismic hazard assessment in Turkey: Markov chains based on modeling the transition probabilities of states (related to the presence or absence of the earthquakes having magnitude M >= 4 during the time interval \Deltat = 0.07 years in each region of Turkey located between 36°N and 42°N and 26°E and 45°E), and the Poisson model, used for computing occurrence probability and recurrence periods of earthquakes. In particular, it should be stated that in this study, our purpose is not to compare the results obtained from these 2 methods. The main purpose …

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Whole-Rock Geochemistry Of Basic And Intermediate Intrusive Rocks In The Ishiagu Area: Further Evidence Of Anorogenic Setting Of The Lower Benue Rift, Southeastern Nigeria, Anthony Chukwu, Smart Chika Obiora Jan 2014

Whole-Rock Geochemistry Of Basic And Intermediate Intrusive Rocks In The Ishiagu Area: Further Evidence Of Anorogenic Setting Of The Lower Benue Rift, Southeastern Nigeria, Anthony Chukwu, Smart Chika Obiora

Turkish Journal of Earth Sciences

Petrographic studies on the intrusive rocks from the Ishiagu area show that they are gabbro, dolerites, and diorite. The gabbro and diorite occur as stocks while the dolerites occur as sills in folded sedimentary sequence predominated by shale. Geochemical data confirmed the rocks as basic (gabbro and dolerites) and intermediate (diorite) rocks with silica contents ranging from 42.45 to 50.75 wt.% and 55.03 to 60.24 wt.%, respectively. They are predominantly alkaline (gabbro, dolerites, and diorites) with sparse tholeiites (few gabbro). The basic rocks are made up of calcic plagioclase (An_{49-54}), clinopyroxene, olivine (altered), nepheline, and opaques, while the intermediate rocks …

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First Report Of Sphaeronitid Blastozoans (Echinodermata) In The Middle Ordovician Of The Taurides, Turkey, Elise Nardin, Mehmet Cemal Göncüoğlu, Bertrand Lefebvre Jan 2014

First Report Of Sphaeronitid Blastozoans (Echinodermata) In The Middle Ordovician Of The Taurides, Turkey, Elise Nardin, Mehmet Cemal Göncüoğlu, Bertrand Lefebvre

Turkish Journal of Earth Sciences

Articulated echinoderm remains are described for the first time in the Ordovician of Turkey. They occur massively, forming a relatively thick “cystoid bed” within the detrital limestone succession of the Sobova Formation (latest Dapingian–earliest Darriwilian) in the western Taurus Mountains. The “cystoid bed” encompasses a monospecific echinoderm assemblage of densely packed, 3-dimensionally preserved thecae. The presence of numerous suborganised plates with diplopore respiratory structures suggests probable affinities with sphaeronitid blastozoans. Comparable sphaeronitid dense beds are well known in the early Darriwilian of Baltica, and in the mid Darriwilian of the Middle East and Asian terranes.

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Tectonosedimentary Evolution Of The Karacasu And Bozdoğan Basins In The Central Menderes Massif, W Anatolia, Faruk Ocakoğlu, Sanem Açikalin, Erman Özsayin, Ramazan Kadi̇r Di̇ri̇k Jan 2014

Tectonosedimentary Evolution Of The Karacasu And Bozdoğan Basins In The Central Menderes Massif, W Anatolia, Faruk Ocakoğlu, Sanem Açikalin, Erman Özsayin, Ramazan Kadi̇r Di̇ri̇k

Turkish Journal of Earth Sciences

The Karacasu and Bozdoğan basins, which trend obliquely to modern grabens in the Central Menderes Massif, are investigated in terms of morphology, basinfill architecture, and structure. Evaluation of the previous geophysical and new structural data indicates that the basins are symmetrical grabens mostly running in a N-S direction. Analysis of sedimentary facies of the basins’ infill supports the simple graben model by revealing lateral alluvial/colluvial fans in basin margins and axial fluvial/lacustrine environments in a central trough. The long-term changes between fluvial and lacustrine conditions in the basins are attributed to paleoclimatic origin. Paleostress analysis of slickensides substantiates that the …

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New Fossils Of Gaindatherium (Rhinocerotidae, Mammalia) From The Middle Miocene Of Pakistan, Abdul Majid Khan, Esperanza Cerdeño, Muhammad Akhtar, Muhammad Akbar Khan, Ayesha Iqbal, Muhammad Mubashir Jan 2014

New Fossils Of Gaindatherium (Rhinocerotidae, Mammalia) From The Middle Miocene Of Pakistan, Abdul Majid Khan, Esperanza Cerdeño, Muhammad Akhtar, Muhammad Akbar Khan, Ayesha Iqbal, Muhammad Mubashir

Turkish Journal of Earth Sciences

New isolated teeth with maxillary and mandibular fragments from the Chinji Formation of the Lower Siwaliks are described and determined as Gaindatherium browni and Gaindatherium vidali. This material comes from the Middle Miocene of Lava and Dhok Bun Ameer Khatoon localities, northern Pakistan, and significantly increases the number of remains previously known for this rhinocerotid genus. Specimens from the Lava site determined as G. vidali present morphological differences with respect to those of G. browni, being similar to those of G. vidali from the Nagri Formation, showing a greater size. Previously, G. vidali was reported only from the Nagri Formation …

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Probabilistic Earthquake Hazard Assessment For Ankara And Its Environs, Bülent Özmen, Berna Burçak Başbuğ Erkan Jan 2014

Probabilistic Earthquake Hazard Assessment For Ankara And Its Environs, Bülent Özmen, Berna Burçak Başbuğ Erkan

Turkish Journal of Earth Sciences

The capital and the second largest city of Turkey, Ankara, is generally considered to be safe in terms of seismic activities and earthquake hazard. However, recent studies and earthquakes experienced in the region showed that Ankara is not indeed seismically safe. As the number of studies on Ankara’s seismic hazard increases, the number of scientists who claim that the earthquake hazard in Ankara is higher than expected also increases. However, to date no detailed analysis has been undertaken as to the earthquake hazard facing Ankara. This study has compiled data from the earthquake catalogues available in Turkey and employed the …

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Reply To Comment By Erkül And Erkül On “Al-In-Hornblende Thermobarometry And Sr-Nd-O-Pb Isotopic Compositions Of The Early Miocene Alaçam Granite In Nw Anatolia (Turkey)”, Altuğ Hasözbek, Burhan Erdoğan, Muharrem Satir, Wolfgang Siebel, Erhan Akay, Güllü Deni̇z Doğan, Heinrich Taubald Jan 2014

Reply To Comment By Erkül And Erkül On “Al-In-Hornblende Thermobarometry And Sr-Nd-O-Pb Isotopic Compositions Of The Early Miocene Alaçam Granite In Nw Anatolia (Turkey)”, Altuğ Hasözbek, Burhan Erdoğan, Muharrem Satir, Wolfgang Siebel, Erhan Akay, Güllü Deni̇z Doğan, Heinrich Taubald

Turkish Journal of Earth Sciences

No abstract provided.

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Ree Geochemical Characteristics Of Titanium-Rich Bauxites: The Permian Kanigorgeh Horizon, Nw Iran, Ali Abedini, Ali Asghar Calagari Jan 2014

Ree Geochemical Characteristics Of Titanium-Rich Bauxites: The Permian Kanigorgeh Horizon, Nw Iran, Ali Abedini, Ali Asghar Calagari

Turkish Journal of Earth Sciences

The Permian Kanigorgeh bauxite horizon is one of the typical titanium-rich bauxite deposits in the northeast of Bukan, West Azerbaijan Province, NW Iran. It is a part of the Irano-Himalayan karst bauxite belt and was developed as discontinuous stratified layers and lenses in Upper Permian carbonates. Mineralogically, diaspore and kaolinite are 2 major mineral phases accompanied by boehmite, smectite, illite, rutile, anatase, hematite, goethite, chlorite, quartz, and plagioclase as minor phases. Geochemical considerations for a selected profile indicate that the concentration values of rare earth elements (REEs) in the bauxite ores range from 8.9 to 200.4 ppm. Eu and Ce …

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Geochemistry Of Sands Along The San Nicolás And San Carlos Beaches, Gulf Of California, Mexico: Implications For Provenance And Tectonic Setting, John Selvamony Armstrong Altrin, Ramasamy Nagarajan, Yong Il Lee, Juan José Kasper Zubillaga, Leslie Patricia Córdoba Saldaña Jan 2014

Geochemistry Of Sands Along The San Nicolás And San Carlos Beaches, Gulf Of California, Mexico: Implications For Provenance And Tectonic Setting, John Selvamony Armstrong Altrin, Ramasamy Nagarajan, Yong Il Lee, Juan José Kasper Zubillaga, Leslie Patricia Córdoba Saldaña

Turkish Journal of Earth Sciences

The weathering conditions, provenance, and tectonic setting of sands from the San Nicolás (SN) and San Carlos (SC) beaches along the Gulf of California, Mexico, have been studied using mineralogy, major element, and trace element data. The compositional similarity among 4 independent groups (each beach area consists of 2 grain-size groups, i.e. medium- and fine-grained sands) was tested statistically by the application of analysis of variance at the 99% confidence level to avoid misinterpretation. The X-ray diffraction and SEM-EDS data revealed that the fine-grained SN sands were abundant in rutile and zircon minerals. The higher SiO_2/Al_2O_3 ratio of the SN …

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Bicoelia Corticifera, A New Inozoid Sponge From The Upper Triassic (Norian) Reef Boulders Of The Central Taurids (Southern Turkey), Baba Senowbari-Daryan, Michael Link Jan 2014

Bicoelia Corticifera, A New Inozoid Sponge From The Upper Triassic (Norian) Reef Boulders Of The Central Taurids (Southern Turkey), Baba Senowbari-Daryan, Michael Link

Turkish Journal of Earth Sciences

Upper Triassic Norian reef boulders, exposed in a locality in the Central Taurids, southern Turkey, yielded a high number of hypercalcified sponges, including Sphinctozoans, Inozoans, Spongiomorphids, and Chaetetids. The reef boulders are exposed near the fountain Tavuk Çeşme, located at the road leading from the town of Aksu to Yenişarbademli. Geologically this locality belongs to the Anamas Akseki Autochthon. In this paper a new inozoan sponge, Bicoelia corticifera nov. sp., is described from Tavuk Çeşme. It is a cylindrical and unbranched sponge, found in several thin sections. The sponge is characterized by 2 axial spongocoels, and the sponge wall is …

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