Abstract
Samples of Lower and Middle Triassic sediments from nine different locations on Svalbard have been analysed by GC-MS to study migration processes. Short range migration was investigated by analyses of interbedded shales and siltstones from three of the locations. In addition, shale samples from six locations were analysed to study long range migration. The maturity of the samples varied from immature through moderately mature to oil window maturity. The qualitative distribution of biological markers was seen to be fairly similar in all the analysed locations, irrespective of lithology. This implies that no source characteristic parameters from GC-MS analyses could be applied to exclude any of the analysed source rocks. Based on maturity considerations it was concluded that short range migration from shales to siltstones had probably been the most important process.
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