Browsing by Author "Aclan, Mustafa"

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Chemical Characterization of Patnos Scoria (Agri, Turkey) and Its Usability for Production of Blended Cement
(oficyna Wydawnicza Politechniki Wroclawskiej, 2012) Depci, Tolga; Efe, Tugba; Tapan, Mucip; Ozvan, Ali; Aclan, Mustafa; Uner, Tijen
This paper reports results of investigations on suitability of scoria (PTS), collected from Patnos (Agri) in Turkey, for blended cement production. Scoria (basic pumice) was chosen as cement replacement materials due to its availability and cost in Agri in Turkey. The portland cement was replaced by scoria within the range of 0, 5, 10, 20, 30, 40 and 50%. Characterization of scoria was subjected by the X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), BET surface area and porosity, zeta potential (zeta) and thin sections. The standard tests were conducted for the obtained fresh and hardened states of scoria blended cement paste. Furthermore, the obtained cements were characterized by the XRF. According to experimental results, scoria up to 20% ratio could be added into clinker and it has a good potential of manufacturing blended scoria cement.
Geochemical Characteristics of Gypsum Lithofacies in Northeastern of Mus (Eastern Anatolia-Turkey): an Indication of the Neotethys Closure
(Springer, 2020) Yesilova, Pelin Gungor; Yesilova, Cetin; Aclan, Mustafa; Gundogan, Ibrahim
The study investigates the origin, age, paleo-depositional environment and formation conditions of gypsum lithofacies deposited in northeastern Mus in Eastern Anatolia using element analysis and sulfur, oxygen and strontium isotope combinations. The correlation diagrams of major ions and trace elements plots in the gypsum lithofacies indicate that carbonates and clastics carried by terrestrial waters (streams, rivers, etc.) significantly contributed to the evaporitic phases. Furthermore, the effects of hydrothermal solutions, increased salinity of the basin and presence of biological activity were associated with high values for major ions and trace elements. While the delta O-18 and delta S-34 isotope contents of some gypsum lithofacies samples show that they are of terrestrial or marine origin, others do not indicate either origin because they are affected by other factors such as water salinity variations, bacterial sulfate reduction, new terrestrial water and detrital inputs carried into the basin. However,Sr-87/Sr-86 isotope concentrations analyzed in gypsum lithofacies in the study area indicate Rupelian (Lower Oligocene) time, which is compatible with the Cenozoic age curve. Based on all these data, gypsum lithofacies in this basin were deposited in a transition zone (shallow sea-lagoon-inland sabkha-mudflats) under the influence of both marine and terrestrial conditions. Therefore, we claim that this basin formed during the Rupelian (Early Oligocene), at a time when the sea connection between the Indian Ocean and the eastern Mediterranean was restricted; that is, the southern branch of the Neotethys was extremely shallow during this period and almost terminated in the study area.
Geochemical Features and Magma Source Regional Characteristics of the Post-Collisional Plio-Quaternary Gozucu (taslicay-Agri) Volcanics, Eastern Anatolia, Turkey
(Tmmob Jeoloji Muhendisleri Odasi, 2020) Aclan, Mustafa; Altun, Yusuf
This study aimed to determine the petrographic and geochemical features of the Plio-Quaternary Gozucu (Taslicay-Agri) volcanics. These volcanics have subalkaline, calc-alkaline, high-K-series and shoshonitic features and are composed of basalt, andesite, trachyandesite, trachydacite and dacites. The Gozucu volcanics exhibit enrichment in light rare earth elements (LREE) and large ion lithophile elements (LILE) while showing depletion in heavy rare earth elements (HREE) and high field strength elements (HFSE). The average Sr and Ba values of Gozucu volcanics are close to continental crust values (Sr-379 ppm Ba-639 ppm), which means that these rocks were contaminated by the continental crust during formation. Low Nb/La (5.13 ppm) and high Ba/Rb (16.75 ppm) ratios indicate that the contribution of sediments was more than that of fluids during the contamination process of the Gozucu volcanics. Positive and negative trends of major and trace elements in the variation diagrams indicate fractional crystallization and a single mantle source. The Gozucu volcanics occurred with a partial melting of the spinel-rich lithospheric mantle source with 0.1-3% partial melting in the continental arc environment after the collision.
Geochemistry, Zircon U-Pb Geochronology, and Tectonic Setting of the Taayla±‡ay Granitoids, Eastern Anatolia, Turkey
(Springer Heidelberg, 2018) Aclan, Mustafa; Duruk, Halil Ibrahim
The TaAYlA +/-double dagger ay granitoids are located in the East Anatolian Accretionary Complex (EAAC), eastern Turkey, and consist of I-type (gabbro, diorite, quartz diorite, monzodiorite, quartz monzodiorite) and S-type (tonalite, granodiorite, monzogranite, granite) granitoid rocks. Whole rock major and trace element data define different two rock assemblages on Harker diagrams. They also suggest that these two different rock assemblages was created from calc-alkaline hybrid magma source which is consisted of the litospheric mantle-derived mafic magma and lower continental crust-derived felsic magma with mixing and assimilation fractional crystallization and assimilation processes. The high average Rb/Nb ratio of the I-type rocks from the TaAYlA +/-double dagger ay granitoids indicates that the additive of lower continental crust material during the mixing of mafic and felsic magma more than litospheric mantle material. The TaAYlA +/-double dagger ay granitoids display enrichment in large ion litophile elements (LILE) (Cs, Rb, Ba, U, Th, Pb), light rare earth element (LREE) (I-type; La-N/Yb-N = 7.38-17.53; S-type; La-N/Yb-N = 6.27-26.73), and depleted in high field strength element (HFSE) (Nb, Ta, P, Ti) implying a subduction-related magmatic signature. The zircon U-Pb geochronological data (granodiorite, 19.7 +/- 0.3 Ma; monzogranite, 20.3 +/- 0.3 Ma) obtained from the TaAYlA +/-double dagger ay granitoids reveal that the continent-continent collision between the Arabian and Eurasian plates along the Bitlis-Zagros suture zone occurred in Early Miocene (Burdigalian) or before Miocene.
Petrogenesis and the Evolution of Pliocene Timar Basalts in the East of Lake Van, Eastern Anatolia, Turkey: a Consequence of the Partial Melting of a Metasomatized Spinel-Rich Lithospheric Mantle Source
(Pergamon-elsevier Science Ltd, 2020) Aclan, Mustafa; Oyan, Vural; Kose, Onur
The Eastern Anatolian region provides a good example for collision-related volcanic activity. This activity started during the Middle Miocene and continued through the Pliocene and Quaternary. The new K - Ar ages reveal that the post-collisional Pliocene Timar basalts located in the East Anatolian Accretionary Complex (EAAC) erupted between 4.72 (Zanclean) and 3.29-2.93 Ma (Piacenzian). The Pliocene Timar basalts consist of plagioclase, clinopyroxene (augite), and olivine minerals and have glomeroporphyritic, intergranular, and ophitic textures. They display enrichment in light rare earth elements (LREEs) with (La/Yb)(N) values that range between 3.19 and 6.66 to 21.63-5.61. Sr-87/Sr-86(i) and Nd-143/Nd-144(i) isotopic ratios of the Timar basalts are 0.70599-0.70436 and 0.51277-0.51259, respectively. The epsilon Nd(t) values of these rocks range between 1.0116 and 1.0121. Sr-87/Sr-86(i) and Nd(t) contents indicate crustal contamination during the emplacement of the Timar basalts. According to the Energy Constrained-Assimilation Fractional Crystallization (EC-AFC) model, this contamination rate is between similar to 1.4 and 4.4%. The melting model shows that the least evolved samples of the Timar basalts were formed by similar to 0.1-2% partial melting of the lherzolitic source. Primitive melts that constituent Timar basalts were occurred with partial melting of a magma source that has predominantly spinel bearing mineralogy. All data indicate that the origin of the parental melts of the Timar basalts is metasomatized lithospheric mantle source and then these melts reached the surface from the fissures that is related to extensional tectonics in Pliocene.
Syn-Collisional I-Type Esenkoy Pluton (Eastern Anatolia-Turkey): an Indication for Collision Between Arabian and Eurasian Plates
(Pergamon-elsevier Science Ltd, 2018) Aclan, Mustafa; Altun, Yusuf
The Esenkoy pluton which is situated in the East Anatolian Accretionary Complex (EACC) is represented by I-type, metalumino, calc-alkaline, VAG + syn-COLG, gabbro, diorite, quartz diorite, tonalite and granodiorite type rocks. This paper presents the characteristics of the above granitoids on their major, trace, rare earth elements (REE) and their zircon U-Pb dating. Zircon U-Pb crystallisation ages for gabbro, tonalite and granodiorite are 22.3 +/- 0.2 Ma, 21.7 +/- 0.2 Ma and 21.8 +/- 0.2 Ma respectively. Esenkoy granitoids show medium and high-K calc-alkaline character, with six exceptional K-poor sample plot in tholeiitic series field. The Rb/Y-Nb/Y diagram for Esenkoy granitoids display subduction zone enrichment trend. The data which obtained from major, trace and REE geochemical characteristics and Pb-206/U-238 ages indicate that the collision which is take place between Arabian and Eurasian plates along the Bitlis-Zagros suture zone has begun in the Early Miocene (Aquitanian) or before from Early Miocene. (C) 2018 Elsevier Ltd. All rights reserved.
U-Th Ages and Facies Properties of Edremit Travertines and Tufas, Van, Eastern Anatolia: Implications for the Neotectonics of the Region
(Polish Geological inst, 2021) Yesilova, Cetin; Yesilova, Pelin Gungor; Aclan, Mustafa; Yu, Tsai-Luen; Shen, Chuan-Chou
Travertine formation is one of the most important archives of active tectonics in a region and provides information about climate, water temperature and quantity, and biological activity. The Edremit travertines and tufas extend over nearly160 km(2) within the boundaries of the Edremit area to the east of Lake Van (eastern Turkey), and yield important evidence towards understanding the neotectonics of the region. The Edremit travertines and tufas were studied throughout their full stratigraphic extent, the factors controlling the formation of these deposits were examined, and the succession was sampled for U/Th analysis. Travertine formation was found to occur from 542-29.7 ka, with two different tufa formation periods: from 29.7-5.8 ka and 5.8-2.08 ka. Pauses in travertine formation (palaeosols) were identified from 510-470 ka, 289-269 ka and 91-34 ka. Our study showed that climate parameters affected the formation of tufa, while the Edremit travertines developed under the control of tectonism. The Van Fault is directly associated with travertine development and its age was identified as 542 ka or older. Since the Gurpinar Fault, one of the most important faults in the region, is effective in shaping the southern slope of the travertines and limiting the movement of the Van Fault, its age should be younger than 542.4 ka. The Elmalik Fault played an active role in the formation of the Edremit tufas and is proposed to be 29.7 ka in age, from stratigraphic relationships in the region.
Zircon U-Pb Ages and Geochemistry of Granitoid From the Southwest Part of the Taslicay Batholith: Implications for Neotethyan Closure in Eastern Anatolia, Turkey
(indian Acad Sciences, 2020) Aclan, Mustafa; Turgut, Inci Kibariye
The composite Taslicay batholith that is located in the Eastern Anatolian Accretionary Complex (EAAC) includes I- and S-type granitoid rocks. This batholith occurred as a result of the collision between Arabian and Eurasian plates along the Bitlis-Zagros suture zone during the Early Miocene (Burdigalian). This paper presents new whole rock geochemical and zircon U-Pb geochronological data from the southwest part of Taslicay batholith. The study area contains S-type granitoids such as tonalite, granodiorite, monzogranite, and granite. These rocks are characterized by enrichments in large ion lithophile elements (LILEs) (Cs, Ba, Rb, K) and light rare earth elements (LREEs), and depletions in high field strength elements (HFSEs) (Nb, P, Ti). They contain a number of mafic microgranular enclaves (MMEs) that are quartz microdiorite in composition. Aluminium Saturation Index (ASI) and CIPW normative corundum values of these granitoids vary between 0.98 and 1.22 and 0.06-1.55%, respectively. The zircon U-Pb ages of the studied granitoids range between 19.8 and 20.0 Ma. Considering all geological, geochemical and geochronological data, we suggest that S-type granitoids from the southwest part of Taslicay batholith were formed with assimilation fractional crystallization (AFC) from a hybrid magma source in a syn-collisional (Arabian-Eurasian collision) tectonic environment.