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. 1989:53:2451-5.
doi: 10.1016/0016-7037(89)90368-2.

Origins of etioporphyrins in sediments: evidence from stable carbon isotopes

C J Boreham  1 , C J Fookes, B N Popp, J M Hayes
Collaborators, Affiliations

Origins of etioporphyrins in sediments: evidence from stable carbon isotopes

C J Boreham et al. Geochim Cosmochim Acta. 1989.

Abstract

In samples of the Julia Creek and Condor oil shales (Australia, Albian, and early Tertiary, respectively) etioporphyrin III is significantly depleted in 13C (4%) relative to porphyrins derived from chlorophylls. This isotopic difference suggests a large contribution from some independent source. The haem group found in cytochromes derived from microbial sources is the most likely candidate.

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