搜索结果: 61-75 共查到“理学 Illite”相关记录134条 . 查询时间(0.134 秒)
Clay Mineralogy and Illite Crystallinity of the Atoka Formation, Arkoma Basin, and Frontal Ouachita Mountains
Anchimetamorphism Diagenesis Illite Illite crystallinity Polytype Provenance Vitrinite reflectance X-ray powder diffraction
2011/12/30
Clay mineralogy (including illite crystallinity) was studied in Pennsylvanian synorogenic sediments (Atoka Formation) in the subsurface of the Arkoma Basin and the adjacent Ouachita thrust belt. Vitri...
A Chemical, XRD, and 27Al MAS NMR Investigation of Miocene Gulf Coast Shales with Application to Understanding Illite/Smectite Crystal-Chemistry
Burial diagenesis Gulf Coast Illite/smectite Miocene NMR
2011/12/30
This study assesses the distribution of Al and Fe in mixed-layer illite/smectites (I/S) in shales undergoing burial diagenetic changes, using evidence from 27Al NMR, XRD, and chemical analyses. Sample...
Illite from the Potsdam Sandstone of New York: A Probable Noncentrosymmetric Mica Structure
Illite Mica Noncentrosymmetric Polytype Powder X-ray diffraction Space group C2
2011/12/1
Abstract: Illite from the Potsdam Sandstone (lower Ordovician) of Northwestern New York was studied by powder X-ray diffraction, scanning electron microscopy, and chemically analyzed and dated by the ...
Three Zones for Illite Formation during Burial Diagenesis and Metamorphism
Age dating Burial diagenesis Gulf Coast basin Illite Illite/smectite Ostwald ripening Potassium/argon Punctuated diagenesis
2011/12/1
Abstract: Reinterpretation of published data for shale cuttings from the Gulf of Mexico sedimentary basin identifies three reaction zones for illite formation with increasing depth for well CWRU6. In ...
Compositional End Members and Thermodynamic Components of Illite and Dioctahedral Aluminous Smectite Solid Solutions
Clay minerals Composition End members Illite I/S clays Mixed-layered clays Smectite Stoichiometry Structural formula Thermodynamic components Thermodynamic status
2011/12/30
Consideration of XRD, TEM, AEM, and analytical data reported in the literature indicates that dioctahedral aluminous smectite and illite form two separate solid solutions that differ chemically from o...
Characterization of Hydroxy-Interlayered Vermiculite and Illite/Smectite Interstratified Minerals from the Weathering of Chlorite in a Cryorthod
Chlorite Hydroxy-interlayered intergrades Illite/smectite mixed-layers Soil clays Spodosol
2011/12/30
X-ray diffraction, FTIR, and chemical analyses were performed on clay fractions (1? 祄, <0.1 祄), separated by means of size fractionations and high-gradient magnetic separation techniques, from a Cryor...
X-Ray Identification of One-Layer Illite Varieties: Application to the Study of Illites around Uranium Deposits of Canada
Hydrothermal alteration Illite Octahedral cation distribution Polytype Uranium deposits Vacant cis-sites Vacant trans-sites
2011/12/29
Structural and diffraction criteria for distinguishing between t-1M, c-1M, m-1M, and 3T illite varieties are described. The t-1M illite corresponds to a one-layer monoclinic structure with vacant tran...
Nature of the Illitic Phase Associated with Randomly Interstratified Smectite/Illite in Soils
Chemical analysis Elementary particle High-resolution transmission electron microscopy Illite Interstratified Smectite Smectite/illite
2011/12/29
A dispersion-centrifugation-decantation procedure was used to isolate various particle size fractions from a sample of clay (<2 祄 fraction) separated by sedimentation from the Ap horizon of a Webster ...
Experimental Determination of the Rates of Precipitation of Authigenic Illite and Kaolinite in the Presence of Aqueous Oxalate and Comparison to the K/Ar Ages of Authigenic Illite in Reservoir Sandstones
Illite Kaolinite Precipitation rate Oxalate K/Ar Sandstones North Sea
2011/12/29
The importance of precipitation rate as an effective control on illite and kaolanite formation during diagenesis has been examined by measuring precipitation rates, from Al fluid concentration, in a D...
Implications of Linearly Correlated Oxygen and Hydrogen Isotopic Compositions for Kaolinite and Illite in the Magnus Sandstone, North Sea
Illite Kaolinite Stable isotopes Porewater
2011/12/29
Authigenic kaolinite and illite are important diagenetic minerals in the Magnus Sandstone, a giant oil reservoir in the northern North Sea. These clay minerals, separated from three wells, show consid...
An Experimentally Derived Kinetic Model for Smectite-to-Illite Conversion and Its Use as a Geothermometer
Geothermometry Illite Kinetics Smectite Smectite/illite
2011/12/29
The smectite-to-illite conversion during shale diagenesis has recently been used to constrain the estimate of a basin's thermal history. We have systematically investigated the kinetics for the conver...
Illite/Smectite Geothermometry of the Proterozoic Oronto Group, Midcontinent Rift System
Diagenesis Illite/Smectite Mineralization Proterozoic Retrograde Thermal history
2011/12/29
Characterization of the Nonesuch Formation, middle unit of the Proterozoic Oronto Group, as a potential hydrocarbon source for the Lake Superior basin portion of the Midcontinent Rift system requires ...
Considerations and Applications of the Illite/Smectite Geothermometer in Hydrocarbon-Bearing Rocks of Miocene to Mississippian Age
Geothermometer Hydrocarbons Illite/smectite Illitization Smectite diagenesis Thermal maturity
2011/12/29
Empirical relationships between clay mineral transformations and temperature provide a basis for the use of clay minerals as geothermometers. Clay-mineral geothermometry has been applied mainly to dia...
Far-Infrared Study of the Interlayer Torsional-Vibrational Mode of Mixed-Layer Illite/Smectites
Burial diagenesis Far-infrared Illite/smectite Miocene shale Terrebonne Parish Louisiana X-ray diffraction
2011/12/1
Abstract: Investigation of mixed-layer illite/smectites with far-infrared (FIR) spectroscopy indicates the presence of torsional mode absorption bands associated with interlayer fixed-K sites. By cont...
Smectite-Illite Transition in Barbados Accretionary Wedge Sediments: TEM and AEM Evidence for Dissolution/Crystallization at Low Temperature
Accretionary wedge AEM analyses Barbados Electron diffraction Fluid-sediment interaction Illite Mixed-layer Smectite TEM images
2011/12/1
Abstract: Sediments from depths to 670 m in the Barbados accretionary complex and transecting the décollement zone have been studied by transmission and analytical electron microscopy (TEM/AEM). The s...