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Abstract: A new genus, of Maastrichtian» Postomphalocyclus, is decribed from the Central Anatolia (Malatya, Sivas, Niksar). This new genus is thought to be established as an evolution of Omphalocyclus according to itslateral chamber which is located impartial of the shell
Abstract: The purpose of this study is to explain stratigraphy and depositional environment of the units aroundDirmil (Burdur) on the SW Anatolia. The units are divided in the two groups, the young sediments of Neogene andpost-Neogene age and older sediments of Upper Triassic-Eocene age. The older ones are technically situated at thepresent time, and dominated by neritic fades during the Upper Triassic-Lias time» hemi-pelagic facies during the Jurassic-Upper Cretaceous time, detritic facies after the Uppermost Cretacous time concerning depositional environment. Theyoung deposits are represented by continental deposits of lacustrine facies.
Abstract: Geochemieal paremeters of the drilling-logs from two magnetic mines of Kumaş have been evaluatedstatistically. Each magnesite mine was analized on statistical base within and between each other by using geochemiealparameters. The parameters which were used in this study MgO, SiOi, CaQ, F62Q3 and AI2O3, Computer programswere used in this geostaüsüçal study due to excessive number of data. Mean standard deviation coefficient of variation ofthe variables from these two mines were found and correlation of variables were determined by correlation coefficientCyclicity of the variables within each drilling and similarity of the same sequence between drillings has been analyzedby autocorrelation and cross-correlation respectively. F-test and t-test analysis has been used for determining whetherthese geochemieal parameters from each magnesite fields belong to the same population,
Abstract: In this study, the sttatigraphical characters of Züe (Tokat) are clarified in detail. Hie base of the studied area which are named as Turhal metamorphifces is the tow grade metamorphose rocks as quarteite,micaschist, calcschist, epidot-schist» milonite-gneiss, metosandstone ve metaquartz-sandstone in Peimo-Triassic age, Permian limestone became marble blocks after metamorphism and located in Permo-Triassic matrix.The basement rocks are unconformably overlain by Carcurum Formation (Upper Jurassic- Lower Cretaceous) consistingif red- pink limestones.Carcurum Formation is unconformably covered by Hacılar Formation of Maesttichtian age. The paléontologie investigation of several samples taken from Savcı member consisting of clayey limestones and Kayganlı member consisting of sandylimestones of Hacılar Formation indicate that there planctonic forminifer biozones such as; Globotruncana havanensis,Gansserina gansseri and Abathomphalus mayaroensis,£- During Lutetian transgression, Çekerek Formation was unconformably located on Hacılar Formation, This formationcontains conglomerate, sandstone and clayey limestones. These rocks are overlain by the shallow marine faciès of gypsium,tuff and claystone of Pliocene Kemerkaş Formation showing angular unconformity. The youngest rocks are Quaternary gravels and pebels in the studied area,Laramian, Anatolian and Pkenian phases are important in the geological evolution of this area. The several NE-SW foldings and overthmsts which are parallel each other are seen in this tectonic region.
Abstract: Left lower jaw of Felis cf. catus Linnaeaus is found in Şerefköy (Muğla-Yatağan) mammalian fauna.Detailed descriptions of the material are made and compared with other Felis species.
Abstract: Autcropted vulcanites are scattered very wide area in western Anatolia One of these is Rahmanlar(Selendi-Manisa) Cu-Pb-Zn deposit. The volcanites in the near vicinity of Rahmanlar Cu-Pb-Zn deposit are far most important, with respect to genetic formation of mineralisation,m In the investigated area, volcanites autcropted in two different places are observed in lava flows and agglomerates, Alkaline Küçüksoğanlı volcanites are often formed from dacite and rhyodacite, CalcaUcaline Rahmanlar volcanites are formedas basalttic andecite trachyandecite and andésite. When the volcanites in investigated are considered by plate tectonics, it could be said that these are the products of Kucuksoğanlı volcanites continental shells which appeared firstly in Miosen. These volcanites were thought to occur bymelting of the thick Menderes massive as a result of deep-anatectonism and eruption through the discontinuity of grabensistems due to compression tectonizm occuring over West Anatolia. Rahmanlar vulcanites were formed by mainly basaltic and partly andesitic volcanisms by differentation of tectonic regime with the effect of thick sediment (basin formation) during the further discontinuity.
Abstract: The mineralisations of Pertek-Demürek are; skarn type Fe and vein type Cu, The skarn type Femineralizations occur along the guartz diorite-Keban Marbles contacts and usually together with skarn formations, Thequartz diorite emplacement took place after the Yüksekova Complex`s thrust over to the Keban Metamoıphics cuttingboth of the formations. The skarn formations developed as exo and endoskarns. The ore mineral of these zones isdominantly magnetite. Pyrite is less abundant and chalcopyrite is scarce*The Cu mineralizations occur as net-like chacopyrite films within the silicified fracture zone fiilings. These fracturezones are 1 to 1.5 m thick and are found in the Yüksekova Complex. The hydrothermal solutions what given birth tothe Cu mineralizations should have originated from the quartz diorite or from surrounding rocks during the emplacementof the diorite. The primary mineral assemblage of the Cu mineralizations is as pyrite+ehalcopyrite. Limonite, bornite,idaite, metallic Cu and eovellite-chaleoeite are secondary minerals and are found in the oxidized parts.
Abstract: Ulukışla-Çamardı magmatics overing a alarge area around Uiukışla-Çamardı are bounded by the Niğdemassif on the north, the Ecemiş corridor on the east, Bolkarlar on the south, and the Tuzgölü basin on the w§st.North-dipping a subduction zone and resulting magmatie arc developed above an oceanic crust during the Upper Cretaceous in the region, Magmatics are made up of intrusive, subvoleanie, and volcanic rocks. Morphology of volcanicsappears as lava flow, pillow lawa, flow breccia, dike and tuff-mfftes, F^om place to place volcanics alternats with sedimentary rocks.Magmatic rocks consist of diorite-gabbro, monzonite, basalt-andesite» laüte basalMatite andésite, laute, and trachyte. Chemical composition of the rocks indicate that they resulted from magmatic arc and partly influenced by themantle.
Abstract: Bathymetry and the bottom sediments of Lake Eymir, remnant of and old meandering river situated 15kilometres south of Ankara, have been studied. The lake bottom is pan shaped and neary flat The deepest part occurs atthe middle, where 5.5 m of depth has been recorded; there is a gradual shallowing towards both ends. Bottom muds arevertically structureless down to a depth of 20 cm, possibly due to bioturbation activity. The sediments are filling thelake as suspension loads particularly from both ends. At these shallow SW and NE ends silt is dominant. At the lowerends of alluvial fans where they reach lake banks, sandy gravel, sand and sandy silt also occur as nanrow zones. The sediments in the broad central depression of the lake have a very fine silt and clay grain size. Sorting is "poor" to "verypoor", skewness and kurtosis values show local variations within the lake. Mineralogy stongly reflects the characteristics of the hinterland teiranes. Organic content of the bottom surface sediments increases towards the center of the lake.
Abstract: The Zn-Pb deposits occuring in Upper Permian-Triassic lower marbles and Bolkardağı marbles are strata-bound and epigenetic in character. Pyrite, sphalerite and galena are te main minerals within the hydrothermal sulfideore veins which are Upper Upper Paleocene-Lower Eocene in age.I The high average Sb and Ag concentration and high Zn/Pb ratio of the crude sulfide ores point to a hydrothermal origin and high formation temperature. High average Co, Ni, Ti, Cu and As concentration, high Co/Ni ratio and Co-NiMn relations of pyrite samples, high average Mns Cü and Fe concentration of sphalerite and low average Sb concentration of galena also support this conclusion.There is high correlation between Fe-Si, Ti-Fe, Cr-Fe, Si-Ca* Cr-Si, Cd-Zn, Ag-Pb and Sb-Cu element pairs of^sulfide ores and Co-Nit Co-Ti, Co-Ass Ni-Ti, Ni-As and Ti-As element pairs of concentrated pyrite samples.
Abstract: This study investigates concentrations of Fe-group trace elements, their statistical distributions andrelation in order to obtain new data which are useful in integrating the genesis of the deposits.The geochemieal investigations show that the Sn 33, Fe 13, Pb 10, V and Mo 6, Cr and Ni 2 limes enriched inAation to their Clarke values, In contrast to those, elements Al 48, Cu 6, Mg 4, Tİ3 and Mn 2 times impoverished.Especially the enrichment of Cr and Ni supports intrusive-magmatic thesis on the ore genesis.All the investigated elements, expect Cr, Mo and V show lognormal distributions* These can be considered asimportant indications to a intrusive-magmatic origin»I The correlation and regration analysis show significant positive correlations beetwen Co-Zn, Pb-Zn, Cr-(Ni+V),Mo-Mo/Sn and Mg-Mg/Co. Those relations are to be seen only in magmatic diiferetiations. These results indicate thatthe apatite bearing-magnetite ore deposit of Avnik as intrusive-magmatic ore deposit.
Abstract: In this work, biozones have been established and compared with "Standard Calpionellid Zones" based on theinvestigation of Calpionellidae in Upper Tithonian and Valanginian period locating between the Eastern Bayburt and the KopMountains.The results of the examined samples obtained from the measured stratigraphie sections of the surveyed area during thestudies for my Ph.D. and Associate Professorship as Mow,Four Range Zones consisting of Crassieollaria, Calpionelia, Calpionellopsis and Calpionellites; fiveAcme Zones consisting of Crassicollaria intermedia (A), Calpionella alpina (B), Calpionella elliptica(C), Calpionellopsis simpiex-Calpionellopsis oblonga (D) and Calpionellites darderi (E); and ten subzones consisting of A^-^-A^ B|-B2? D^^^^Dj and Ej« ^ have been established and described.In the establishment of Calpionellid Biozones, while stating species association in Biozones, because of the importanceof evolution of Ulis group changeable morphologic features of species have also been taken in care.A map of world showing the studies on different localities of tehlys until today has been drawn* In this particular work,Caipioneilites darderi (E) Acme Zone has been investigated by being divided in Ej-E^ subzones for the first time anda table comparing some localities in Tethys and Biozones in the study area has been prepared.It has been realized through the paleogeographic distribution of Calpionellids -being a group of planktic fossil- in Tethysthat this group lives in the warm water of bathyal zone.
Abstract: Analytical results of 165 rock chip samples collected from predetermined alteration areas in the regionbetween Ördu-Ünye-Fatsa-Aybastı were evaluated for any possible sort of mineralization, The region appears verypromising for epithermal gold deposits. 11 elements were analyzed. The main purpose of this study is to filter outinfluences related to extraneous factors other than mineralization such as lithology. Therefore, two multivariatetechniques, linear regression and principal component analysis were employed. Data before filtering revealed only asingle anomalous area around Fatsa-Tepeköy for gold with no association of other elements. However, filtering resultedin delineation of other anomalous areas. In addition, filtered data may imply three different episodes for gold deposition:1 - gold together with base metals at relatively high temperatures, 2 - gold with epithermal mineralization, 3 - gold onlywith silica as late stage quartz veins. Hence, multivariate techniques proved to be very successful in removing thebackground signal caused by different lithological units in the sampling area.