Journal ArticleDOI
The fabric of shale—an electron-microscope study
TLDR
In this article, scanning and transmission electron micrographs of various shales establish the close correlation between clay-flake orientation and fissility, and the shales with the best fissibility have the highest degree of preferred orientation.Abstract:
Summary
Scanning and transmission electron micrographs of various shales establish the close correlation between clay-flake orientation and fissility. The shales with the best fissility have the highest degree of preferred orientation. Randomness of clay flakes prevails in non-fissile claystones. The results suggest that the fabric of shales may result either from the deposition of dispersed clay or by the collapse of clay floccules after deposition.read more
Citations
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Journal ArticleDOI
Seismic anisotropy of shales
TL;DR: In this article, the seismic properties and preferred clay mineral orientation of a suite of shales are investigated using laboratory velocity measurements as a function of confining pressure, X ray diffraction techniques, and electron microprobe backscatter (BSE) imaging.
Book ChapterDOI
Determinants of Clay and Shale Microfabric Signatures: Processes and Mechanisms
TL;DR: In this paper, the energy sources that result in sediment particle associations, reorientation, and disaggregation are presented in terms of processes and mechanisms based on electron microscopy observations and theoretical considerations.
Journal ArticleDOI
Relationships between axial-plane foliations and strain
TL;DR: In this article, the relationship between various types of axial-plane foliation, strain history and finite strain is considered from a theoretical point of view, and it is concluded that foliations (including slaty cleavage and schistosity) will not be precisely parallel to a principal plane of finite strain in the general case.
Journal ArticleDOI
Use of Clay Fabric to Distinguish Turbiditic and Hemipelagic Siltstones and Silts
TL;DR: In this article, the turbiditic and hemipelagic siltstones and silts in outcrops from the Boso Peninsula, Japan and in cores from the East China were studied to determine distinctive characteristics of the turbidity, colour, grain size, organic carbon-organic nitrogen ratio, plus clay fabric.
Journal ArticleDOI
Facies and origin of shales from the mid‐Proterozoic Newland Formation, Belt Basin, Montana, USA
TL;DR: In the mid-Proterozoic Newland Formation six major shale facies types, deposited in nearshore to basinal environments, are distinguished on the basis of bedding characteristics, textural features, and the proportions of silt, clay and carbonate as mentioned in this paper.
References
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Journal ArticleDOI
The Structure of Compacted Clays
TL;DR: In this paper, the authors describe the nature of clay structure, a term referring to the arrangement of particles and the electrical forces acting between them, from the principles of colloid chemistry and crystal chemistry.
Journal ArticleDOI
Factors Influencing the Early Stages of the Compaction of Clays and Sands--Review
TL;DR: The water content of saturated clays is a complex function of the physico-chemical influences on the sorption of water on clay-mineral surfaces as mentioned in this paper, and specific surface increase in the order kaolinite-illite-montmorillonite.
Journal ArticleDOI
Fissility of mudrocks
TL;DR: The breaking characteristics of a mudrock can be represented on a triangular diagram with massive, flaky-fissile, and flaggy-fisile as end members.
Journal ArticleDOI
Study of the Fabric of Fine-Grained Sediments with the Scanning Electron Microscope
TL;DR: The mutual disposition of mineral particles and voids in the micron and sub-micron size ranges is generally inaccessible to observation by light microscopy as mentioned in this paper, which can be overcome by the use of an electron optical system.
Related Papers (5)
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Clay-Ironstone Concretion Preserving Fabrics Due to Progressive Compaction
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