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Characterization of Tertiary Catalan lacustrine oil shales; discovery of extremely organic sulphur-rich Type I kerogens
Journal article   Peer reviewed

Characterization of Tertiary Catalan lacustrine oil shales; discovery of extremely organic sulphur-rich Type I kerogens

Jaap S. Sinninghe Damste, F. Xavier C. de las Heras, Pim F. van Bergen and Jan W. de Leeuw
Geochimica et cosmochimica acta, Vol.57(2), pp.389-415
01/1993
DOI: https://doi.org/10.1016/0016-7037(93)90439-4

Abstract

biomarkers Catalonia Spain Cenozoic chemical composition Economic geology, geology of energy sources Europe Geochemistry of rocks, soils, and sediments Iberian Peninsula kerogen lacustrine environment organic compounds organic materials Ribesalbes oil shale source rocks Southern Europe Spain sulfidation Tertiary
A new type of kerogen, defined as Type I-S with an atomic H/C ratio > 1.5 and an atomic S (sub org) /C ratio > 0.04 is reported from two lacustrine deposits in fault-bounded basins of E Iberia. The morphology and chemical structure of the kerogens are described. The Ribesalbes kerogen is mainly composed of fossilized organic matter of the freshwater alga Botryococcus braunii. The results indicate the large variability in palaeodepositional conditions in lacustrine environments.

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