搜索结果: 1-15 共查到“地质学 microscopic”相关记录16条 . 查询时间(0.022 秒)
Microscopic characterization and formation mechanisms of deepwater sandy-debris-flow and turbidity-current sandstones in a lacustrine basin: a case study in the Yanchang Formation of the Ordos Basin, China
Sandy debris flow Turbidite Ordos Basin Petrology Reservoir properties
2018/4/2
Deep-water deposition is a current issue in sedimentological research. Sandy-debris-flow sandstones and turbidity-current sandstones are the main types of sandstone that are the focus of considerable ...
Characterization of mixed-layer illite-smectite from bentonites using microscopic, chemical and X-ray methods: Constraints on the smectite-to-illite transformation mechanism
Characterization mixed-layer illite-smectite microscopic X-ray methods smectite-to-illite transformation mechanism
2012/3/31
We studied mixed-layer illite-smectite (I/S) (,1 or 0.5 mm size fractions) in 28 diage-netic bentonite samples, Pliocene to Ordovician in age, from different locations in North America and Europe to i...
Structural mechanisms of solid solution and cation ordering in augite-jadeite pyroxenes: II. A microscopic perspective
Structural mechanisms augite-jadeite pyroxenes microscopic perspective
2012/3/31
Infrared spectra of ordered (P2/n ) and disordered ( C2/c ) pyroxenes belonging to the join augite-jadeite were investigated at room temperature in the range 70–1400 cm 21. The spectra change as a fun...
Analytical Electron Microscopic Study of the Noncrystalline Products Formed at Early Weathering Stages of Volcanic Glass
Formation Process Halloysite Noncrystalline Material Pumice Weathering Product
2011/12/22
Abstract: Formation processes of weathering products of pumice collected from a rhyolitic pyroclastic flow deposit were investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SE...
Transmission Electron Microscopic Study of the Kaolinitization of Muscovite
Analytical electron microscopy Hydrothermal alteration Kaolinite Muscovite Transmission electron microscopy
2011/11/30
Abstract: Hydrothermally kaolinitized muscovite from the Otago schist of Brighton, New Zealand, has been studied by transmission and analytical electron microscopy (TEM and AEM) to determine the mecha...
Direct High-Resolution Transmission Electron Microscopic Measurement of Expandability of Mixed-Layer Illite/Smectite in Bentonite Rock
Expandability Fundamental particle High-resolution transmission electron microscopy Illite/smectite Interstratification
2012/1/4
Samples of mixed-layer illite/smectite were investigated from a single bentonite bed zoned with respect to expandability from 90 to 30%. Chips of natural rocks were embedded in a resin, using procedur...
Transmission Electron Microscopic Study of Coexisting Pyrophyllite and Muscovite: Direct Evidence for the Metastability of Illite
Analytical electron microscopy Illite Muscovite Pyrophyllite Solid solution Thermodynamic stability Transmission electron microscopy
2012/1/4
Transmission electron microscopy has been used to characterize coexisting pyrophyllite and muscovite in low-grade metamorphosed pelites from Witwatersrand and northeastern Pennsylvania. The Witwatersr...
Electron Microscopic Investigations of Iron Oxyhydroxides and Accompanying Phases in Lateritic Iron-crust Pisolites
Goethite Hematite Iron Kaolinite Laterite Lattice fringe image Pisolite Transmission electron microscopy
2011/11/25
Abstract: Pisolites from an iron crust in western Senegal were studied by conventional and high-resolution electron microscopy to determine their internal structure and the genetic processes that led ...
Transformation of Synthetic Birnessite to Cryptomelane: An Electron Microscopic Study
Birnessite Cryptomelane Selected area diffraction Structural disorder Synthesis Thermal treatment Transmission electron diffraction
2012/1/12
Na-saturated birnessite was synthesized by oxidizing an alkaline MnCl2 solution with gaseous O2. Transmission electron microscopy (TEM) showed no morphological change upon K-saturation of the birnessi...
Scanning Electron Microscopic and X-ray Powder Diffraction Study of Manganiferous Bauxite, Kincsesbanya, Hungary
Aluminum Bauxite Lithiophorite Manganese Scanning electron microscopy X-ray powder diffraction
2012/2/2
Manganiferous karst bauxites are rare on a worldwide scale. One such body, recently mined at Kincsesb醤ya, Hungary, has been studied by chemical, petrographic, X-ray powder diffraction, scanning electr...
Transmission Electron Microscopic Study of Diagenetic Chlorite in Gulf Coast Argillaceous Sediments
Berthierine Chlorite Diagenesis Illite/smectite Transmission electron microscopy
2012/2/1
Transmission and analytical electron microscopy have been used to study the diagenesis of the trioctahedral component of phyllosilicates (principally chlorite) in argillaceous core samples (depths of ...
Scanning Electron Microscopic Study of Imogolite Formation from Plagioclase
Alteration Fiber Imogolite Plagioclase SEM Weathering
2012/2/9
Imogolite occurs as tiny bumps less than 0.05 祄 in diameter and about 0.3 祄 long on amorphous thin layers on the surface of weathered plagioclase. The bumps grow outward from the surface to form proje...
Electron-microscopic and Mossbauer Spectroscopic Studies of Iron-Stained Kaolinite Minerals
Electron-microscopic Mossbauer Spectroscopic Iron-Stained Kaolinite Minerals
2012/2/15
An electron-microscopic and M鰏sbauer spectroscopic study of a range of kaolinites has revealed three distinct types of iron contamination within these minerals: a) Ferric ion may substitute for alumin...
A Preparative Technique for Electron Microscopic Examination of Colloid Particles
Preparative Technique Electron Microscopic Examination Colloid Particles
2012/2/15
Adsorption of clay particles from very dilute aqueous suspensions onto positively charged films (Cytochrome C) on carbon coated support grids has been used to obtain well dispersed samples of the part...
Optical and Electron Microscopic Investigation of Shear Induced Structures in Lightly Consolidated (Soft) and Heavily Consolidated (Hard) Kaolinite
Electron Microscopic Investigation Heavily Consolidated (Hard) Kaolinite
2011/11/17
Abstract: A review of fabric studies of clays suggests the need for relating those fabric characteristics which are revealed at the two levels of magnification provided by optical and electron microsc...