Encyclopedia of Geochemistry

1999 Edition
| Editors: Clare P. Marshall, Rhodes W. Fairbridge


  • R. Basil Johns
  • Andrew T. Revill
  • Clifford C. Walters
  • Mark J. Rigali
  • Bartholomew Nagy
  • Jean M. Richardson
  • Martin Hale
  • John K. Volkman
  • Stephen A. Macko
  • Michael H. Engel
  • Scott Messenger
  • Stuart G. Wakeham
  • John W. Morgan
  • Charles G. Patterson
  • Steven C. Semken
  • Ethan L. Grossman
Reference work entry
DOI: https://doi.org/10.1007/1-4020-4496-8_14

Occurrence of organic facies

Organic matter occurs in nature in dispersed and more concentrated forms, both liquid and solid as well as hydrocarbon gases and often in economically important quantities as fossil fuels. Conventionally, the term organic facies has described the occurrence of dispersed organic matter in mappable sedimentary units of similar organic richness and organic type reflecting a particular depositional environment. This article uses the term organic facies to encompass the several styles of major occurrences of organic matter in the geosphere.

Kerogen as dispersed organic matter

Kerogen is the term used to describe the occurrence of solid organic matter in dispersed sediments and shales. With the growth in understanding of the chemical formation of kerogens there has been a move from the historically narrower definition of kerogen as organic matter in oil shales to the broader definition of kerogen as organic matter insoluble in organic and aqueous alkaline...


Organic Matter Source Rock Fission Product Meteoric Water Isotope Ratio Mass Spectrometer 
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  1.  Biomarker: coals;  Coal: organic petrography;  Coal: origin and diagenesis;  Coal: types and characteristics;  Coal: vitrinite reflectance and maturity assessment;  Geochemistry: low temperature;  Hydrogen isotopes;  Laboratory simulations of oil and natural gas formation; Occurrence of organic facies; Oil seeps and coastal bitumens; Oil shales; Oil–oil and oil–source rock correlation; Organic matter in fossils; Organic matter in meteorites; Organics: contemporary degradation and preservation; Organics: sources and depositional environments;  Peat;  Petroleum;  Petroleum: hydrothermal;  Petroleum: in-reservoir biodegradation;  Petroleum: kinetic modeling;  Petroleum: primary migration;  Petroleum: surface geochemistry;  Petroleum: types, occurrence and reserves;  Porphyrins;  Precambrian organic matter;  Sulfate reduction;  Sulfur isotopes
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  1.  Biogeochemistry;  Biomarker: higher plant;  Coal: organic petrography;  Coal: origin and diagenesis; Organic geochemistry; Organics: contemporary degradation and preservation; Organics: sources and depositional environments;  Peat;  Precambrian organic matter
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  1.  Biopolymers and macromolecules;  Meteorites; Organic geochemistry; Organic matter in fossils;  Precambrian organic matter
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  1.  Biopolymers and macromolecules;  Earth's atmosphere;  Geochemistry of sediments; Organic geochemistry; Organic matter in fossils; Organics: sources and depositional environments;  Paleoenvironments;  Precambrian atmosphere;  Sedimentary fluids
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Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • R. Basil Johns
  • Andrew T. Revill
  • Clifford C. Walters
  • Mark J. Rigali
  • Bartholomew Nagy
  • Jean M. Richardson
  • Martin Hale
  • John K. Volkman
  • Stephen A. Macko
  • Michael H. Engel
  • Scott Messenger
  • Stuart G. Wakeham
  • John W. Morgan
  • Charles G. Patterson
  • Steven C. Semken
  • Ethan L. Grossman

There are no affiliations available