Arama Sonuçları

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  • Öğe
    Geochemical features of Menteşe formation dolomites (Rhaetian) in the Karacahisar-Kasımlar area (Isparta-Turkey)
    (Nevşehir Hacı Bektaş Veli Üniversitesi, 2017) Dinç, Salih; Özkan, Ali Müjdat
  • Öğe
    Geochemical features of rare earth elements in the dolostones of the Hacıalabaz formation (late jurassic) from Hadım (Konya, Turkey) area
    (WMESS, 2017) Dinç, Salih; Özkan, Ali Müjdat; Karadağ, Mehmet Muzaffer; Küpeli, Şuayıp
    Purpose of review is to commentate the source of REE and anomalies (e.g. Ce, Eu, and Y) of the Hacialabaz Formation dolomites. The Taurus Mountains represent the Alpine-Himalayan system in the Eastern Mediterranean, which formed a stable northern margin of Gondwanaland during the Paleozoic to Late Mesozoic. The Hacialabaz Formation dolomites were displayed to be mostly disordered and lesser ordered and nonstoichiometric and Ca-rich, and they are mostly locally developed in the lower sections of the Hacialabaz Formation. The Post Archaean average Australian Sedimentary rocks [PAAS]-normalized REE+Y values of the dolomite sample groups show patterns characterized a clear depletion in all REE species. The total REE content of the dolomite displays a strong positive correlation with SiO2, Al2O3, Fe2O3, Na2O, K2O, TiO2 and P2O5 and negative correlation with MgO and CaO. The total REE content of the dolomite displays a strong positive correlation with Ba and Rb and weakly positive correlation with Sr and Zr. The total rare earth element contents are positively correlated to the Sr and ?18O contents in the Hacialabaz Formation dolomites is denoted to a decrease in the salinity of dolomitizing fluids. Also between Sr and ?18O content with total rare earth element of the Hacialabaz Formation dolomites are observed a weakly positive relationship (Fig. 53,59). On account of, reduced rare earth element, Sr and ?18O contents in our samples is expressed a decrease in the salinity of dolomitizing fluids, i.e. the meteoric freshwater mixing to the basinal brines. Hacialabaz Formation dolomites were formed as early diagenetic at the low temperatures in the mixing-zone near-surface burial environments, and as late diagenetic from basinal brines at the higher temperatures in the shallow to medium burial environment.
  • Öğe
    Petrographic characteristics of the Hacıalabaz formation dolomites (upper jurassic) ın the Bagbası (Hadım-Konya/Turkey) area
    (Cite Factor, 2011) Dinç, Salih; Özkan, Ali Müjdat
    The objective of this study is to determine the sedimentary properties of dolomites (Upper Jurassic) in terms of petrography, which belong to the Hacialabaz Formation existing at the surroundings of Bagbasi District lying at the south of Konya City. Dolomite, the unit formed with dolomitic limestone and limestone begins with gray or dark gray colored, moderate-thick layered, sugar textured dolomitic limestones including micritic intermediate layers at the bottom, and continues with gray colored, medium layered limestones through the upper parts. Dark gray colored, moderate-thick layered breccioid like appearing limestone at some layers and dolomitized intermediate layers form the upper parts. Hacialabaz Formation has begun to settle as the direct carbonate sedimentation in a transgression making sea after a long emerging period. Green algae like Clypeina jurassica, Cambelliella striata, Salpingoporella sp. and foraminifera fossils like Valvulina lugeoni, Kurnubia cf. palastiniensis, Valvulamina sp., Opthalmidium sp., Siphovalvulina sp., Haurania sp., Miliolidae were found in the Hacialabaz Formation settled in shallow-marine carbonate platform environment (tidal-subtidal and restricted lagoon). Eight dolomite-rock textures are recognized and classified according to crystal-size distribution and crystal-boundary shape. These is made of unimodal, very fine to fine-crystalline planar-s (subhedral) mosaic dolomite; unimodal, medium to coarse-crystalline planar-s (subhedral) mosaic dolomite; coarse to very coarse- crystalline planar-s (subhedral) dolomite; medium to coarse-crystalline planar-e (euhedral) mosaic dolomite; medium to coarse-crystalline planar-e (euhedral) dolomite; coarse to very coarse-crystalline non-planar-a (anhedral) dolomite; coarse to very coarse-crystalline non-planar-c (cement) dolomite; polymodal, planar-s (subhedral) to planar-e (euhedral) mosaic dolomite. Dolomitization is closely associated with the development of secondary porosity; dolomitization pre-and post-dates dissolution and corrosion and no secondary porosity generation is present in the associated limestones. The most common porosity types are non-fabric selective moldic and vuggy porosity and intercrystalline porosity. These porous zones are characterized by late-diagenetic coarse-crystalline dolomite, whereas the non-porous intervals are composed of dense mosaics of early-diagenetic dolomites. The distribution of dolomite rock textures indicates that porous zones were preserved as limestone until late in the diagenetic history, and were then subjected to late-stage dolomitization in a medium burial environment, resulting in coarse-crystalline porous dolomites. Hacialabaz dolomites have been formed as early diagenetic at the tidal-subtidal environment and as the late diagenetic at the shallow-deep burial depths.
  • Öğe
    Esentepe Gültepe Batman çukurunun oluşum mekanizması
    (Batman Üniversitesi, 2012) Dinç, Salih; Eren, Yaşar; Nalbantçılar, Mahmut Tahir; Beyaz, Turgay; Ünal, Murat; Arslan, Şükrü; Polat, Süleyman
  • Öğe
    Örenağıl (Batman, GD- Anadolu) barıt cevherleşmesinin petrokimyası
    (Ankara Üniversitesi, 2016) Dinç, Salih; Baran, Hacı Alim; Kumral, Mustafa
    Örenağıl barit cevherleşmesi, ülkemizde önemli maden yataklarına ev sahipliği yapmasıyla tanınan Bitlis metamorfiklerinin Orta Devoniyen yağlı Meydan Formasyonu içerisinde oluşmuştur. Cevherleşme genellikle yan kayaçları olan kireçtaşlarıyla uyumlu olarak görünen demirli minerallerin baskın olduğu bir zon içerisinde bulunur. Cevher içeren bu demirli zon bazen de Maden Formasyonunun diğer üyeleri olan metamorfik birimleri kesen fay zonları, kırık ve çatlaklarda gözlenmektedir. KireçtaĢları içerisinde gözlenen demirli zonun kalınlığı birkaç metreyi bulabilmekte iken metamorfik birimlerin içerisindeki zonun kalınlığı 1 santimetreden 30 santimetreye kadar değiĢmektedir. Ġnceleme alanında barit cevherleĢmesine eĢlik eden sülfürlü minerallerin varlığına da rastlanmıĢtır. Bu mineraller genellikle demirli, baritli zonda santimetre ölçeğine varan boyutlarda, nadiren de yan kayaçları kesen kırık, fay gibi süreksizlik zonlarında saçınımlı olarak gözlenmektedir. Mineral parajenezinin barit, pirit, kalkopirirt, sfalerit, bornit, ±kalkozin, ±kovellin, ±malakit, ±azurit, ±manyetit, götit, hematit ve limonitten oluĢtuğu belirlenmiĢtir. CevherleĢmenin baryum konsantrasyon oranı % 25 den 61‟e kadar olmasına karĢın yan kayaçlarda önemli bir baryum konsantrasyonuna rastlanmamıĢtır.