Chemical modelling of kerogens |
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| Institution: | 1. Center for Geomicrobiology, Aarhus University, Department of Bioscience, Ny Munkegade 114, 8000 Aarhus-C, Denmark;2. GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Section 4.3, Organic Geochemistry, Telegrafenberg, 14473 Potsdam, Germany |
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| Abstract: | Models of kerogens belonging to the three classical Types have been represented at the following evolution stages: - •-beginning of diagenesis (sensu-stricto),
- •-beginning of catagenesis,
- •-end of catagenesis.
Chemical models are drawn, using analytical data obtained on natural samples: elemental analysis, electron microscopy, 13C NMR, thermogravimetry, functional analysis and pyrolysis.In order both to get a statistical representation and make comparisons easier, the same molecular weight of about 25,000 has been chosen for the different models of kerogens at the beginning of the diagenesis stage. |
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