Sedimentary rock - Oil Shale, Stratification, Fossils

sedimentary rock

Table of Contents

Introduction
Classification systems
- Terrigenous clastic rocks
- Carbonate rocks: limestones and dolomites
- Noncarbonate chemical sedimentary rocks
Properties of sedimentary rocks
- Texture
  - Grain size
  - Particle shape
  - Fabric
- Mineralogical and geochemical composition
Sedimentary structures
- External stratification
- Bedding types and bedding-plane features
  - Types
  - Bedding-plane features
- Deformation structures
Sedimentary environments
Sedimentary rock types
- Conglomerates and breccias
  - Classification schemes
  - Epiclastic conglomerates and breccias
    - Clast-supported conglomerates
    - Matrix-supported conglomerates
- Sandstones
  - Sandstone components and colour
  - Formation of sandstones today
  - Bedding structure
  - Texture
  - Classification of sandstones
    - Quartz arenites
    - Arkosic sandstones
    - Lithic arenites
    - Wackes
- Mudrocks
  - General properties of shales
  - Origin of shales
  - Shales of economic value
- Limestones and dolomites
  - Mineralogy
  - Textural components
  - Origin of limestones
  - Dolomites and dolomitization
- Siliceous rocks
  - Types of cherts
  - Origin of cherts
- Phosphorites
- Evaporites
  - Nonmarine environment
  - Shallow marine environment
  - Deep-basin environment
- Iron-rich sedimentary rocks
  - Origin of banded iron formation
  - Origin of ironstones
- Organic-rich sedimentary deposits
  - Coal
  - Oil shale
  - Oil and natural gas
Secular trends in the sedimentary rock record

References & Edit History Related Topics

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noncarbonate, nonclastic sedimentary rocks

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Mudrock containing high amounts of organic matter in the form of kerogen is known as oil shale. Kerogen is a complex waxy mixture of hydrocarbon compounds composed of algal remains or of amorphous organic matter with varying amounts of identifiable organic remnants. The most famous oil shale deposit in the world, located in the United States, is the Green River Formation of Utah, Wyoming, and Colorado of Eocene age (i.e., formed 57.8 to 36.6 million years ago). This vast deposit contains fossils and sedimentary structures, suggesting rapid deposition and burial of unoxidized organic matter in shallow lakes or marine embayments. ...(100 of 17457 words)

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