Results 91 to 100 of about 61,474 (312)

Geochemical and stable isotope patterns of calcite cementation in the Upper Cretaceous Chalk, Uk: Direct evidence from calcite-filled vugs in brachiopods

Hu, X-F, Jeans, C.V. and Dickson, J.A.D. 2012. Geochemical and stable isotope patterns of calcite cementation in the Upper Cretaceous Chalk, UK: Direct evidence from calcite-filled vugs in brachiopods. Acta GeologicaPolonica, 62 (2), 143-172.
Dickson, Tony, Jeans, Christopher, Hu, Xiufang   +2 more
core   +1 more source

Particulate inorganic carbon as calcite at station TT011_5-CTD58

, 2003
Particulate inorganic carbon as calcite at station TT011_5 ...
William M Balch (6978683), Balch, William M   +1 more
core   +1 more source

Molecular Palaeontology Prospects From Exceptionally Preserved Eocene Brackish‐Water Bivalve Batissa sitakaraensis (Venerida: Corbiculidae) From Hokkaido, Japan

Geological Journal, EarlyView.
This study reports the exceptional preservation of the Eocene freshwater bivalve Batissa sitakaraensis from Hokkaido, Japan. Multimodal analyses reveal that both the aragonitic shell mineralogy and the delicate organic periostracum retain their original structural and chemical characteristics after millions of years.
Taro Yoshimura, Kazuki Hirota, Hiroyuki Kagi, Takashi Matsubara, Takenori Sasaki   +4 more
wiley   +1 more source

Exchangeable Al, peanut growth, and nodulation on Ultisol Bogor as affected by ameliorant proportion of lime and organic matter

Journal of Degraded and Mining Lands Management
Ultisols are characterized as acid soils with high exchangeable Al as the primary constraint for plant growth. This study aimed to investigate the effect of the proportion of lime and organic matter in decreasing exchangeable Al on Ultisol Bogor and ...
Vita Ratri Cahyani, Mohammad Iqbal Firmansyah, Ongko Cahyono, Hery Widijanto   +3 more
doaj   +1 more source

Effect of Grain Size and Mineral Mixing on Carbonate Absorption Features in the SWIR and TIR Wavelength Regions

Remote Sensing, 2012
Reflectance spectra of carbonate minerals in the shortwave infrared (SWIR) and thermal infrared (TIR) wavelength regions contain a number of diagnostic absorption features.
Nasrullah Zaini, Harald van der Werff, Freek van der Meer   +2 more
doaj   +1 more source

Physiological controls on seawater uptake and calcification in the benthic foraminifer Ammonia tepida

To analyze the relation between seawater uptake and calcification, we incubated juveniles of the benthic foraminifer Ammonia tepida with various fluorescent probes and visualised them afterwards with confocal laser scanning microscopy. Vesicle membranes,
Langer, G., de Nooijer, L. J., Nehrke, G., Bijma, J.   +3 more
core   +1 more source

Apolar Behavior of Hydrated Calcite (10{-1}4) Surface Assists in Naphthenic Acid Adsorption

, 2019
Water molecules bind strongly to the polar calcite surface and form a surface adsorbed layer that has properties akin to an apolar surface. This has important implications for understanding the thermodynamic driving forces underlying the adsorption of ...
Arjun, Valiya Parambathu, Dilip, Asthagiri, Le, Wang, Walter, Chapman   +3 more
core   +1 more source

Geochemical and Geological Investigation of Skarn‐Type Pb–Zn Mineralization in Hastanetepe (Balya‐Balıkesir, Türkiye): An Approach Based on Fluid Inclusions, Sulphur Isotopes and Geochemical Data

Geological Journal, EarlyView.
Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley   +1 more source

Ultra fine grinting of calcite (CaCO3) power in a vertical stirred mill: Effect of some variables on product fineless [PDF]

, 2012
In this study, the wet ultra fine grinding of calcite (CaCO3) powder in a vertical stirred mill was performed. The influence of some operating variables such as solids concentration, stirrer speed and ball filling ratio on the product fineness and ...
Toraman O.Y.
core  

Particulate inorganic carbon as calcite at station TT011_7-CTD84

, 2003
Particulate inorganic carbon as calcite at station TT011_7 ...
William M Balch (6978683), Balch, William M   +1 more
core   +1 more source