Browsing by Subject "Geochemistry"

Browsing by Subject "Geochemistry"

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  • Clays and Clay Minerals, Vol. 54, No. 5, 571-586, 2006. 
    Fisher, G. Burch; Ryan, Peter C. (The Clay Minerals SocietyThe Clay Minerals Society, 2006-09)
    Soils developed on Quaternary fluvial fill terraces in the humid tropics of Costa Rica display progressive changes in mineral assemblage, chemical composition and particle size with age. Clay minerals from B horizons of ...
  • Clays and Clay Minerals, Vol. 55, No. 1, 18–35, 2007. 
    Ece, O¨. IsI˙K; Schroeder, Paul A. (The Clay Minerals SocietyThe Clay Minerals Society, 2007)
    Abstract—A field-mapping and crystal-chemical study of two alunite- and halloysite-rich deposits in the Turplu area, situated northwest of Balıkesir on the Biga Peninsula of northwest Turkey reveals a mineralogically diverse ...
  • Clays and Clay Minerals, Vol. 55, No. 4, 402–422, 2007. 
    Kadi˙r, Selahatti˙n (The Clay Minerals SocietyThe Clay Minerals Society, 2007)
    Pliocene volcaniclastic lacustrine rocks of the Dog˘anbey formation in the Beysehir region (central Anatolia) are composed of organic-matter-bearing claystone, clastic units and dolomite interbeds, suggesting an anaerobic, ...
  • Clays and Clay Minerals, Vol. 55, No. 4, 423–442, 2007. 
    Bozkaya, O¨mer; Yalc¸in, Hu¨seyi˙n; Basibu¨yu¨k, Zeynel; Bozkaya, Gu¨lcan (The Clay Minerals SocietyThe Clay Minerals Society, 2007)
    Hydrous Al-silicate deposits are found to the south of Pu¨tu¨rge in Malatya city, Turkey. The surrounding rocks consist of mylonitic granitic gneiss overlain by muscovite gneiss with kyanite-bearing metabasic schist lenses ...
  • Clays and Clay Minerals, Vol. 55, No. 6, 635–643, 2007. 
    Grathoff, Georg H.; Baham, John E.; Easterly, Heather R.; Gassman, Paul; Hugo, Richard C. (The Clay Minerals SocietyThe Clay Minerals Society, 2007)
    Floating, mixed-valent Fe films have been observed worldwide in wetlands, ferrous iron-rich seeps, and in seasonally reduced soils, but are usually misidentified as oil or biofilms. There has been little characterization ...
  • Clays and Clay Minerals, Vol. 56, No. 1, 23–38, 2008. 
    Pu¨spo¨ki, Z.; Koza´k, M.; Kova´cs-pa´lffy, P.; Szepesi, J.; Mcintosh, R.; Ko´nya, P.; Vincze, L.; Gyula, G. (The Clay Minerals SocietyThe Clay Minerals Society, 2008)
    A detailed stratigraphic and facies reconstruction of a bentonitized acid-tuff succession, deposited within the transgressive systems tract of the Upper Miocene-Sarmatian Ser-3 eustatic cycle, at Sajo´ba´bony, northern ...
  • Clays and Clay Minerals, Vol. 56, No. 2, 244–258, 2008. 
    Kadir, Selahattin; Eren, Muhsin (The Clay Minerals SocietyThe Clay Minerals Society, 2008)
    Caliche in various forms, namely powdery, nodule, tube, fracture-infill, laminar crust, hard laminated crust (hardpan), and pisolitic crust, is widespread in the Mersin area in southern Turkey. It generally occurs within ...
  • Clays and Clay Minerals, Vol. 56, No. 6, 751–760, 2008. 
    Ferrell Jr., Ray E. (The Clay Minerals SocietyThe Clay Minerals Society, 2008)
    The varied mineralogical composition of earthymate rials and the quantityof elements extracted bysimula ted stomach acid substantiate the diversityof materials consumed by humans practicing geophagy. Direct consumption of ...
  • Clays and Clay Minerals, Vol. 57, No. 3, 311–329, 2009. 
    Kadir, Selahattin; Kart, Firdevs (The Clay Minerals Society, 2009)
    The Sogut kaolinite deposits at C¸ altı, I˙nhisar, and Kure, Turkey, are an important source of raw materials for the ceramics industry of that country, but no detailed mineralogical or geochemical characterizations of ...
  • Clays and Clay Minerals, Vol. 58, No. 1, 120–141, 2010. 
    Arslan, Mehmet; Abdioglu, Emel; Kadir, Selahattin (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Widespread alteration in the Upper Cretaceous pyroclastic units of the Tirebolu (Giresun) area, NE Turkey, has resulted in significant occurrences of bentonite with economic potential. No detailed geological, mineralogical, ...
  • Clays and Clay Minerals, Vol. 58, No. 2, 205–219, 2010. 
    Kadir, Selahattin; Eren, Muhsin; Atabey, Esref (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The origins of dolocrete and associated palygorskite in the C¸ anakkale region of Turkey have been little studied, but are of fundamental importance for a more complete understanding of the mineralogy of this region. The ...
  • Clays and Clay Minerals, Vol. 59, No. 1, 75–94, 2011. 
    Karakaya, Muazzez Celik; Karakaya, Necati; Kupeli, Suayip (The Clay Minerals Society, 2011)
    A number of different types of bentonite deposits formed by hydrothermal alteration and diagenetic processes are to be found in the Ordu area of the Eastern Black Sea region. The Ca- and Na-bentonite deposits are related ...
  • Clays and Clay Minerals, Vol. 59, No. 3, 250–276, 2011. 
    Kadir, Selahattin; Erman, Hande; Erkoyun, HuLya (The Clay Minerals Society, 2011)
    The Kutahya kaolinite deposits are the most important source of raw materials for the ceramics industry in Turkey. To date, no detailed mineralogical or geochemical characterizations of these materials have been carried ...
  • Clays and Clay Minerals, Vol. 59, No. 3, 315–327, 2011. 
    Marques, Rosa; Dias, M. Isabel; Prudencio, M. Isabel; Rocha, Fernando (The Clay Minerals Society, 2011)
    Clay-rich deposits of Upper Cretaceous levels in the Taveiro (Reveles and S. Pedro) and Aveiro (Bustos) regions of west-central Portugal are economically and environmentally important, but detailed chemical and mineralogical ...
  • Clays and Clay Minerals, Vol. 60, No. 4, 420–439, 2012. 
    Cheshire, Michael C.; Bish, David L.; Brassell, Simon C. (The Clay Minerals SocietyThe Clay Minerals Society, 2012)
    Most previous studies of the kaolin deposits in the southeastern United States have focused on their mineralogy and petrology to understand better the depositional and diagenetic environments of the kaolins. Many studies ...
  • Clays and Clay Minerals, Vol. 60, No. 6, 633–654, 2012. 
    Baioumy, Hassan M.; Gilg, H. Albert; Taubald, Heinrich (The Clay Minerals SocietyThe Clay Minerals Society, 2012)
    Mineralogical and geochemical variations among the Carboniferous and Cretaceous sedimentary kaolin deposits from Sinai provided an opportunity to examine the effect of the source area on compositions of the deposits. The ...