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Origin of Hydrocarbons in the Eastern Part of the Drava Depression (Eastern Croatia)

Croatian Geological Survey
Publication Date
  • Hydrocarbons
  • Source Rocks
  • Genesis
  • Pannonian Basin
  • Croatia
  • Earth Science


Oil and gas in the eastern part of the Drava depression originated from source rocks of very good generating capabilities - dark gray to black marlstones of Ottnangian, Karpathian, Badenian, Sarmatian and partly Pannonian age. During different tectonic regimes, algal-lipid rich kerogen formed in anoxic and suboxic marine environments. The typical terrestrial maceral vitrinite only occurs as traces.

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