Petrographic criteria for fluid mobility of graphitic carbon in terrestrial and extraterrestrial samples

P Lindgren, John Parnell

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2 Citations (Scopus)

Abstract

Graphitic carbon is a widespread precipitate in terrestrial and extraterrestrial samples. However it has a range of possible origins, which can be difficult to distinguish, including the in situ alteration of organic matter, thermal alteration of hydrocarbons, and precipitation from C-O-H fluids. Petrographic characteristics help to understand the origin of the graphite, including relationships with rock fabric, paragenetic sequences and evidence for fluid mobility. Characterization of a range of terrestrial samples will allow better interpretation of the petrography of carbon in extraterrestrial samples. In particular, improved petrographic data from carbonaceous chondrites and ureilite meteorites should help to distinguish the origin of carbon in their parent bodies. (C) 2006 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)235-238
Number of pages4
JournalJournal of Geochemical Exploration
Volume89
DOIs
Publication statusPublished - 2006
EventGeofluids V: 5th International Conference on Fluid Evolution, Migration and Interaction in Sedimentary Basins and Orogenic Belts - Windsor, Ontario, Canada
Duration: 16 May 200621 May 2006

Keywords

  • graphite
  • carbon
  • ureilites
  • meteorites
  • interplanetary dust particles
  • isotopic composition
  • nitrogen
  • chondrites
  • hydrogen
  • genesis

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