Maturation of lower palaeozoic kerogens from North Greenland
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Kerogen from Cambrian and Silurian sedimentary rocks (immature to postmature) from North Greenland has been studied by elemental analyses (C and H), X-ray diffraction (XRD) and infrared spectroscopy (i.r.). The change in the kerogen's structure [derived from the width of half height (WHH) of the (002) diffraction] and the content of functional groups (from characteristic absorption bands in the infrared spectra) suggest the following main processes of maturation: elimination of aliphatic CH2, CH3 groups (mature zone): elimination of aromatic CH groups [postmature (catagenesis) zone] and rearrangement of C ≠ C bonds [postmature (metagenesis) zone]. The maturity parameters derived from X-ray diffraction (WHH) and infrared spectroscopy (CH/CC-aliphatic/aromatic ratio) are applicable for maturity ranking in the mature to postmature (catagenesis) zones.
Original language | English |
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Journal | Organic Geochemistry |
Volume | 20 |
Issue number | 3 |
Pages (from-to) | 405-413 |
Number of pages | 9 |
ISSN | 0146-6380 |
DOIs | |
Publication status | Published - Apr 1993 |
- kerogen, Lower Palaeozoic, maturation, North Greenland
Research areas
ID: 240010261