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Sirel E.,Ankara University | Gedik F.,Mineral Research and Exploration
Revue de Paleobiologie | Year: 2011

The main aim of this study is to describe and figure a miogypsinid taxon Postmiogypsinella n.gen. (type species Postmiogypsinella intermedia n.gen. n.sp.) and its foraminiferal association found in the Upper Chattian limestones of the Karamaǧara and Edilme sections that both range from the Rupelian to Burdigalian. They are located around Akçadaǧ town, Malatya basin, Eastern Turkey. Postmiogypsinella is characterized by the slightly trochospiral-asymetric planispiral chambers of the early rotaloid stage with pillars and funnels as in Miogypsinella Hanzawa and ogival equatorial chambers with the basal stolons and lateral chambers of the late ontogeny as in Miogypsina Sacco. It is neither Miogypsinella nor Miogypsina. The new genus is a transition form between Miogypsinella and Miogypsina. It resembles Miogypsina in its miogypsinid equatorial and lateral chambers on one hand, however, it also has similarities to Miogypsinella in its rotaloid early stage with slightly trochospiral-asymetric planispiral chambers, pillars and funnels. In addition, we introduce the lithology and biostratigraphy of the Karamaǧara and Edilme sections where the new genus was created. Source

Ozturk C.A.,Technical University of Istanbul | Ugurlu O.F.,McGill University | Bayram O.,Mineral Research and Exploration
ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014 | Year: 2014

Design of the fill or backfill material has been important subject for rock engineers due to the increase volume of underground mining operations as well as the environmental concerns raised from mineral processing plant tailings. Filling operations are useful for underground mining not only for the use of the opening as a tailing deposit but also to protect the mine against subsidence. The filled stopes are also safe working platforms for the production from downwards to upwards. The key issue to decide the applicability of tailings as paste fill material is the strength of the material. Paste fill mainly consists of water, tailing, and cement as binder material. A lead-zinc underground mine located in Balya, Balikesir, Turkey operated by Eczacibasi Esan Group was selected as site for the study. The mine was operated by sublevel stoping underground method, and it is the deepest metalliferous mine in Turkey with its high production rate. The underground openings are currently filled by cemented back fill material which mainly consists of aggregate, cement, and water. The aim of this study is to investigate the usability of process plant tailings as paste fill material. A series of tests were conducted for the different combination of paste material by changing the water and cement ratio as well as the slump. 12 different recipes for 5 different curing time were prepared to obtain the optimum mixture for paste fill that will be applicable for the mine. The results based on particle size distribution and strength properties such as uniaxial compressive strength and modulus of elasticity were used to select the most usable mixture as paste fill material for the underground mine. The use of paste fill will have an important effect on the cost of mining operation as well as environmental benefits. © 2014 by Japanese Committee for Rock Mechanics. Source

Yuce G.,Eskiehir Osmangazi University | Taskiran L.,Mineral Research and Exploration
Geochemical Journal | Year: 2013

The aim of this study was to understand geochemistry of thermal fluids circulating in the basin at the southwest of Tekman (Erzurum, Turkey) Geothermal Province in Eastern Anatolia as well as to estimate reservoir temperature and its heat source by assessment of helium and carbon isotopic compositions of liquid and gas samples. Deep thermal and cold shallow groundwaters are NaCl type (Cerme and Ilipinar springs) and Ca-Mg-HCO3 type, respectively. The discharge temperatures of thermal waters vary between 29 and 57°C. The reservoir temperatures were estimated by solute silica and cation geothermometers vary from 80 to 110°C. CO2 is the dominant gas in geothermal fluids with variable amounts of nitrogen, helium and CH4. The isotopic ratios of helium that range from 1.03 to 1.54Rac show a range crustal to magmatic-type values. The isotopic composition of carbon (CO2) obtained from the bubbling and dissolved gases shows the variation from -0.2 to 3.4% vs. PDB. The mantle derived fluids interact at shallower levels with circulating meteoric waters and originate geothermal systems from which equilibration temperatures were estimated up to 192°C by gas geothermometers. Copyright © 2013 by The Geochemical Society of Japan. Source

Dilli R.,Mineral Research and Exploration
International Journal of Environmental and Science Education | Year: 2016

The present study, aiming to develop nature culture in primary school students and to help them to become acquainted with their close environment, is a quasi-experimental study. Museum education activities were conducted with the study group which consisted of 128 fourth-grade primary school students. At the end of the study, the students gained understanding about the significance of the Anatolian land which is rich historically and culturally and has fauna and flora specific to the land. With the activities, the students built up nature culture regarding the country they live in through acquiring information about the Maraş elephant which lived in Kahramanmaraş in the past. The study also tried to increase the cognitive development levels of the students in relation to developing environmental consciousness and critical thinking skills, and interpreting about natural environment they live in. © 2016 by iSER, International Society of Educational Research. Source

Olempska E.,Polish Academy of Sciences | Nazik A.,Cukurova University | Saydam-Demiray D.G.,Mineral Research and Exploration
Geological Magazine | Year: 2014

A Lower Devonian silicified ostracod fauna has been recovered from limestone interbeds in the Büyükdere section of the Kozyataʇı Member of the Pendik Formation. Forty-one species belonging to 33 genera have been recognized. Twenty-three are already known, and 15 are described in open nomenclature. One genus and three species (Omerliella rectangulata gen. et sp. nov., Microcheilinella istanbulensis sp. nov. and Roundyella goekchenae sp. nov.) are described. Silicified larval stages of trilobites, agglutinated foraminifers and conodonts co-occur with the ostracods. The ostracod assemblages are 'mixed faunas', between the epineritic Eifelian Mega-Assemblage, representative of high-energy environments, and the basinal Thuringian Mega-Assemblage, representative of low-energy environments. The conodont faunas of the Pendik Formation represent the serotinus, patulus and partitus biozones of the late Emsian-earliest Eifelian. The Emsian ostracods of NW Turkey show numerous species-level links between the Western Pontides (Istanbul Terrane) and assemblages of contemporaneous faunas of the Cantabrian Mountains (Spain), Morocco and Thuringia (Germany), and of similar biofacies. This supports the notion that the Istanbul Terrane, Armorican terrane-collage and northern margins of Gondwana were in geographical proximity in late Early Devonian time. © 2014 Cambridge University Press. Source

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