Abstract
This paper presents the results of geochemical analysis of hydrocarbons occurring in rock formations belonging to Main Dolomite cells (Ca2) Zechstein Stinking Shale (T2) as well as bitumen found in veins intersecting the rock formations of the Klodawa Salt Dome (central Poland). Samples were analysed using gas chromatography-mass spectrometry (GC-MS). Hydrocarbons contained in the samples derive from algal type II kerogen. Main Dolomite represents the bedrock for entrapped hydrocarbons; however, their genesis through partial migration can not be excluded. Hydrocarbons collected from the solid bitumen samples and the Stinking Shale rock originated from the same marine or lacustrine organic-poor shales and they represent a maturity level around the peak oil window. These are the first geochemical studies of hydrocarbons from Klodawa Salt Dome Main Dolomite, which indicate that shale-carbonate-sulphate deposits are a potential source of hydrocarbons in the dome.
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