Alaaddin Vural

Contamination assessment of heavy metals associated with an alteration area: Demirören Gumushane, NE Turkey

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.

Biogeochemical characteristics of Rosa canina grown in hydrothermally contaminated soils of the Gümüşhane Province, Northeast Turkey

Kırkpavli alteration area (Gümüşhane, Northeast Turkey) is contaminated by heavy metals such as Cd, Pb, As, Cu and Zn. The quantity of accumulation of heavy metal trace elements and macroelements in 32 leaves of Rosa canina of the Kırkpavli alteration area has been studied within the scope of geochemical studies. Element contents of samples were assessed using various parameters including descriptive statistics, factor analysis, correlation coefficients and bioaccumulation factor. Concentrations were detected in the acceptable range for Mo, Cu, Pb, Ni, As, Cd, Sb, P, Ti, Na, Se and Sn. Concentrations of Co, Mn, Ba and Hg were detected close to the acceptable values, whereas Zn, Fe, Sr, V, Ca, Cr, Mg, B, Al, K, W, Sc, Cs and Rb concentrations were detected above the acceptable values. Principal component analysis was used to identify the elements that have a close relationship with each other and/or similar origins. It has been concluded that Zn, Cu, As and Mo content of the plant were related to hydrothermal alteration process and they behaved together, whereas Mn and Fe were especially products of weathering conditions, also behaved together. In terms of macroelements, Ca, Mg and Na had similar behaviour, while P and K had the same correlation.

Environmental impact of Gümüşhane City, Turkey, waste area in terms of heavy metal pollution

The aim of this study is to investigate the occurrence of a heavy metal contamination in a solid waste site of Gümüşhane City, Turkey, to examine the dimensions of the risk of contamination, and to present suggestions for possible solutions. For this purpose, heavy metal contents of soil and leachate samples taken from a Gümüşhane waste site were determined by a new method, microwave plasma-atomic emission spectrometry (MP-AES). When the obtained results are compared with background and control values, it can be seen that the region carries contamination risks, especially in terms of heavy metals such as Zn, Cd, Pb, Cu, Ni, and Co. To examine the environmental effects of the landfill area in more detail, geodeposition index (Igeo), enrichment factor (EF), contamination index (PI), and combined contamination index (IPI) parameters are used. In addition, the samples taken from an area supposed to be free of pollution risk were also analyzed as control samples, and the obtained data were statistically compared with the results of the waste area. It is determined that the results of landfill waste site are dissimilar to those of comparison samples in terms of investigated metals, and that they contained higher values in general.

Late Cretaceous arc igneous activity: the Eğrikar Monzogranite example

ABSTRACT The geochemical and Sr–Nd–Pb isotope properties, as well as the Laser Ablation Inductively Coupled Plasma and Mass Spectrometry (LA-ICP-MS) U–Pb zircon age, of Eğrikar Monzogranite in the eastern Pontides, are primarily investigated in this study with the aim of determining its magma source and geodynamic evolution. The U–Pb zircon age obtained from Eğrikar Monzogranite is 78 ± 1.5 Ma, thereby reflecting the age of monzogranite. The I-type Eğrikar Monzogranite comprises quartz, plagioclase (An35–45), orthoclase, muscovite, and biotite. The geochemical analyses of the Eğrikar Monzogranite indicate being medium K calc-alkaline, peraluminous, and resembling magmatic arc granite. The Eğrikar Monzogranite is enriched in large ion lithophile elements and light rare earth elements relative to high field strength elements. Chondrite-normalized rare earth element patterns have concave upward shapes (LaN/YbN 2.47–8.58) with pronounced negative Eu anomalies (EuN/Eu* = 0.29–0.65). Initial εNd(i) values vary between 1.85 and 2.18 and initial 87Sr/86Sr values between 0.7048 and 0.7067. Fractionation of plagioclase, hornblende, and apatite played an important role in the evolution of Eğrikar Monzogranite. The crystallization temperatures of the melts ranged from 770°C to 919°C based on zircon and apatite saturation temperatures. The geochemical and isotopic data suggest being generated by the partial melting of mafic lower crustal sources.

EVALUATION OF SOIL GEOCHEMISTRY DATA OF CANCA (GÜMÜŞHANE-NE TURKEY) BY PROCESSING INVERSE DISTANCE WEIGHTING AND KRIGING INTERPOLATION METHODS-FIRST FINDINGS

Bu calismanin amaci, Canca (Gumushane-Turkiye) alterasyon sahasinin toprak jeokimya verilerini istatistiksel metotlarla degerlendirmek ve sahanin altin cevherlesme potansiyelini arastirmaktir. Bu amacla 288 adet toprak ornegi toplanmis ve altin-iliskili iz bulucu elementler icin analiz ettirilmistir. Altin 0,68-19,20, gumus 0,02-28,97, Cu 2-314, kursun 7-857, cinko 2,1-394, arsenik 4-199,5, antimuan 0,59-49,29, bizmut 5-89, molibden 0,04-37, kalay 0,52-16,30 ve civanin 1,25-91,9 araliginda degistigi tespit edilmistir (altin ve civa µg/kg, digerleri mg/kg olarak). Sperman’s rho korelasyon katsayilarina gore cok guclu olmamakla birlikte Cu ile Au arasinda; Zn ile Cu arasinda, Sb ile Pb ve As arasinda, Mo ile Pb, As ve Sb arasinda, Sn ile As, Sb ve Mo arasinda korelasyon gozlenmistir. Elementlerin esik degerleri, medyan+2 medyan mutlak sapma ile elde edilmis ve elementlerin tahmin haritalari Ters Mesafe Agirliklandirma ve Kriglenme metotlari kullanilarak olusturulmustur. Tahmin haritalari incelendiginde; calisma sahasinin ozellikle bati kesiminde ve tektonik hatlarla da iliskili, basta altin ve gumus olmak uzere element zenginlesmeleri tespit edilmistir. Dolayisiyla sahada yapilacak arama amacli sondaj, jeofizik vb. calismalarda sahanin batisina onem verilmesi onerilmistir. Sonuclar degerlendirildiginde, Ters Mesafe Agirliklandirma yontemi ile elde edilen tahmin haritalarinin bir anlamda anomali kontrast cozunurlugunun daha yuksek oldugu, dolayisiyla toprak jeokimyasi calismalarinda oncelikli olarak bu metotla uretilmis haritalarin kullanilabilecegi onerilmektedir.

Relationship between the geological environment and element accumulation capacity of Helichrysum arenarium

This study was carried out to determine the effect of geological environment on the biogeochemical properties of Helichrysum arenarium. Plant samples from Upper Cretaceous andesite, basalt, and their pyroclasts; Eocene andesite, basalt, and their pyroclasts; and Upper Eocene granitic rocks were collected. Roots, stems, and flowers of the plant were analyzed to determine their major and trace elements, such as Ca, Mg, Al, Na, K, Fe, Mn, U, Sr, P, La, Cr, Ba, Ti, B, W, Hg, Cs, Hf, Rb, Zr, and Ce. This study is one of the few studies in which the element content of H. arenarium is studied in detail and the element accumulation capacities are examined according to the types of rocks the plants grow. Result showed that the plants exhibited different element accumulation capacities according to the lithological environments where they grew. The element concentrations in the root, stem, and flower of the plant were predominantly high in Eocene andesite, basalt, and pyroclasts. High values were also observed in plants grown on the Upper Eocene granitic rock. Some elements were also high in plants grown in the Upper Cretaceous andesite, basalt, and pyroclasts. Therefore, the high element contents of plant are related to the element contents of the rocks where the plants grew. Furthermore, the alteration and tectonic influences on the plants are also influential.

Remote sensing technique for capturing and exploration of mineral deposit sites in Gumushane metallogenic province, NE Turkey

This study examines the determination and confirmation of mineral deposits in the Gumushane Province,Turkey. Rather than using classical techniques, Remote Sensing (RS) and Geographic Information System GIS technologies are applied for this purpose. Mineral alteration traces on the ground are characteristic indicators of ore below the surface. These traces can be determined using RS techniques. The Crosta technique is one of the most important RS image analysis methods used for the determination of mineral alterations. The technique has shown particular usefulness around mine areas, which are rich in ore deposits and show hydrothermal alterations. Therefore, four separate mine fields covering a total area of 718 km2 in the southern part of Gumushane, which is rich in iron oxides, hydroxides and hydrothermal alteration, were chosen. The Crosta technique was applied to the satellite image of each area to explore the regional alterations. The determined locations could be confirmed as alteration areas. Within these four regions, some other locations showing similar alteration patterns were also determined using the Crosta technique. These locations represent good candidates for mineral exploration.