Selenium and tellurium enrichment in palaeo-oil reservoirs

John Parnell*, David Bellis, Joerg Feldmann, Timothy Bata

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


The exploration for selenium (Se) and tellurium (Te) will become intensified as the technological demand for these elements grows. It is known that they are enriched in organic-rich sedimentary rocks over crustal mean values. LA-ICP-MS measurement of pyrite in two biodegraded palaeo-oil reservoirs in central England shows that Se and Te are enriched in them, but not in other sulfide samples from the region and elsewhere. The Carboniferous source rock shales in the region are Se-rich, implying that this enrichment was conferred to the oil generated from them. The Se and Te are located in pyrite precipitated in the palaeo-reservoirs by microbial activity. Exhumed oil reservoirs merit further investigation for concentrations of these elements.

Original languageEnglish
Pages (from-to)169-173
Number of pages5
JournalJournal of Geochemical Exploration
Early online date28 Sep 2014
Publication statusPublished - Jan 2015


  • Biodegradation
  • Microbial sulfate reduction
  • Oil reservoirs
  • Selenium
  • Tellurium


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