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Diagenetic Structural Transformations in North Sea Jurassic Illite/Smectite
Chemical composition Diagenesis Illite/smectite Mossbauer spectroscopy Nuclear magnetic resonance X-ray powder diffraction
2011/11/30
Abstract: The Kimmeridgian-Volgian(-Ryazanian) claystone is the principal oil source rock in the troughs of the North Sea. Randomly (R0) ordered mixed-layer illite/smectite (I/S) appears to have trans...
Porosimetry Measurement of Shale Fabric and its Relationship to Illite/Smectite Diagenesis
Illite/Smectite Shale fabric Mercury porosimetry
2011/12/31
The extent of illite/smectite (I/S) reactions is linked with quantitative measurements of shale fabric in a suite of samples from a lower Frio Formation well. Greater illitization of the I/S clays is ...
Preparation and Properties of Pillared Interstratified Illite/Smectite
Cross-linking Illite/smectite Pillaring Smectite Thermal stability X-ray powder diffraction
2012/1/5
Pillared, regularly and randomly interstratified illite/smectite (I/S) was prepared by interacting aluminum chlorohydrate with I/S in aqueous dispersion. I/S samples from Kinnekulle, Sweden, ranging i...
High-Resolution Transmission Electron Microscopy and Electron Diffraction of Mixed-Layer Illite/Smectite: Experimental Results
Electron diffraction Fundamental particle High-resolution transmission electron microscopy Illite/smectite Interstratification Smectite
2011/11/30
Abstract: High-resolution transmission electron microscopy (HRTEM) and electron diffraction experiments have been performed on R1 and R> 1 illite/smectite (I/S) samples that from X-ray powder diffract...
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...
Illite/Smectite from Gulf Coast Shales: A Reappraisal of Transmission Electron Microscope Images
Illite/smectite Lattice-fringe images Periodicity Transmission electron microscopy X-ray powder diffraction
2012/1/9
Transmission electron microscope (TEM) images of mixed-layer illite/smectite (I/S) from Gulf Coast shales obtained earlier by the authors have been reexamined by comparing them with the calculated ima...
High-Resolution Transmission Electron Microscopy of Mixed-Layer Illite/Smectite: Computer Simulations
High-resolution transmission electron microscopy Illite Image simulation Mixed layer Smectite
2011/11/30
Abstract: High-resolution transmission electron microscope images of dioctahedral mixed-layer clay structures (illite/smectite) having various substitutional and polytypic schemes were modeled using c...
Convenient Technique for Estimating Smectite Layer Percentage in Randomly Interstratified Illite/Smectite Minerals
Crystallite size Illite Illite/smectite Orientation Smectite layer percentage X-ray powder diffraction
2012/1/5
The validity of the saddle/001 method for estimating the percentage of smectite layers in randomly interstratified illite/smectite (US) minerals as a routine laboratory technique has been examined wit...
Compositional Variation in Component Layers in Natural Illite/Smectite
Bentonite Cation-exchange capacity Diagenesis Hydrothermal Illite Interstratification Smectite
2012/1/13
Published chemical data for suites of mixed-layer minerals from diagenetic sedimentary rocks, hydrothermally altered tufts, and a metasomatic bentonite bed indicate that the layer charge and compositi...
K/Ar Systematics of an Acid-Treated Illite/Smectite: Implications for Evaluating Age and Crystal Structure
Acid dissolution Age dating Glauconite Illite/smectite Interstratification Ordering Potassium
2012/1/12
On the basis of progressive acid dissolution the Thompson-Hower model states that mixed-layer glauconite/smectite and illite/smectite contain potassium in two structural sites: a mica-type K position ...
Tectonic Implications of Illite/Smectite Diagenesis, Barbados Accretionary Prism
Barbados Diagenesis Faulting Illite/smectite Tectonics
2012/1/12
The depth distribution of illite/smectite (I/S) compositions was investigated for a well drilled to a depth of 3462 m on Barbados Island, the only subaerial exposure of the Barbados accretionary compl...
Pressure-Temperature-Composition of Illite/Smectite Mixed-Layer Minerals: Niger Delta Mudstones and other Examples
Diagenesis Geothermal gradient Illite/smectite Ordering Smectite
2012/1/12
X-ray powder diffraction (XRD) studies of the clay fraction of Upper Cretaceous mudstones from a shallow (2.5 km) drill hole in the Niger delta indicate a high geothermal gradient (about 100亱C/km) dur...
Relationship Between Illite/Smectite Diagenesis and Hydrocarbon Generation in Lower Cretaceous Mowry and Skull Creek Shales of the Northern Rocky Mountain Area
Diagenesis Hydrocarbon Illite/smectite Interstratification Maturation Pyrolysis Shale
2012/1/12
The percentage of expandable layers in illite/smectite (I/S) mixed-layer clay decreases with increasing temperature and depth in a section through marine Cretaceous shales in the Champlin 1 Hartley Fe...
Chemistry of Illite/Smectite and End-Member Illite
Bentonite Chemical composition Diagenesis Illite Illite/smectite Smectite
2012/1/12
Chemical data from three different series of diagenetic illite/smectites (I/S), analyzed statistically by two regresion techniques, indicate that the content of fixed-K per illite layer is not constan...
Microstructure in Mixed-Layer Illite/Smectite and its Relationship to the Reaction of Smectite to Illite
Edge dislocation Illite Lattice image Mixed layer Smectite Transmission electron microscopy X-ray powder diffraction
2012/1/11
The reaction of smectite to illite in shale from the COST 1 well in the south Texas Gulf Coast and from altered ash-fall tufts from the Morrison Formation in New Mexico was investigated using X-ray po...