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- Heisenberg Group: Marine Kerogen - From Biomolecule to Geomolecule
- Biogeochemistry of Palynomorphs
Biogeochemistry of Palynomorphs
The insoluable organic matter in sediments (kerogen) is the largest organic matter pool on Earth. It predominantly resides dispersed in marine sediments in the form of submillimeter-sized particles. The nature, origins and fates of these particles poorly understood, partly due to difficulties in obtaining pure, single source samples. Morphologically, palynomorphs (pollen, spores, algal walls) are easily characterised, mostly at low taxonomic (species) level. In this theme palynomorphs are used source specific proxies for elucidating marine kerogen chemistry and fate.
For analysis monospecific assemplages assemblages enriched in a given taxon have been taken as source materials. By a combination of sieving and micking single sourced fraction have been isolated which have been analysed chemically using sequential chemical degradation and gas-chromatography mass spectroscopy (GC/MS) of the released lipids, flash-pyrolysis GC/MS, TMAH assisted flash thermochemolysis GC/MS and micro-Fourier transform infra red (FTIR) analysis.
For analysis monospecific assemplages assemblages enriched in a given taxon have been taken as source materials. By a combination of sieving and micking single sourced fraction have been isolated which have been analysed chemically using sequential chemical degradation and gas-chromatography mass spectroscopy (GC/MS) of the released lipids, flash-pyrolysis GC/MS, TMAH assisted flash thermochemolysis GC/MS and micro-Fourier transform infra red (FTIR) analysis.
Thalassiphora pelagica
Pakistan dinocasts
Lingulodinium polyedrum
Publications
Blokker, P. van den Ende, H. de Leeuw, J. W. Versteegh, G. J. M. and Sinninghe Damsté, J. S., 2006. Chemical fingerprinting of algaenans using RuO4 degradation. Organic Geochemistry 37, 871-881.
Dhamelincourt, M. C. Vecoli, M. Mezzetti, A. Cesari, C. Versteegh, G. and Riboulleau, A., 2010. Laser Raman micro-spectroscopy of Proterozoic and Palaeozoic organic-walled microfossils (acritarchs and prasinophytes) from the Ghadamis Basin, Libya and Volta Basin, Ghana. Spectroscopy 24, 207-212.
de Leeuw, J. W. Versteegh, G. J. M. and van Bergen, P. F., 2006. Biomacromolecules of plants and algae and their fossil analogues. Plant Ecology 189, 209-233.
Versteegh, G. J. M. and Blokker, P., 2004. Resistant macromolecules of extant and fossil microalgae. Phycological Research 52, 325-339.
Versteegh, G. J. M. Blokker, P. Marshall, C. R. and Pross, J., 2007. Macromolecular composition of the dinoflagellate cyst Thalassiphora pelagica (Oligocene, SW Germany). Organic Geochemistry 38, 1643-1656.
Versteegh, G. J. M. Blokker, P. Wood, G. Collinson, M. E. Sinninghe Damsté, J. S. and de Leeuw, J. W., 2004. Oxidative polymerization of unsaturated fatty acids as a preservation pathway for microalgal organic matter. Organic Geochemistry 35, 1129-1139.
Versteegh, G. J. M. Blokker, P. Bogus, K. Harding, I. Lewis, J. Oltmanns, S. Rochon, A. and Zonneveld, K. A. F., 2012. Infra red spectroscopy, flash pyrolysis, thermally assisted hydrolysis and methylation (THM) in the presence of tetramethylammonium hydroxide (TMAH) of cultured and sediment-derived Lingulodinium polyedrum (Dinoflagellata) cyst walls. Organic Geochemistry 43, 92-102.
Dhamelincourt, M. C. Vecoli, M. Mezzetti, A. Cesari, C. Versteegh, G. and Riboulleau, A., 2010. Laser Raman micro-spectroscopy of Proterozoic and Palaeozoic organic-walled microfossils (acritarchs and prasinophytes) from the Ghadamis Basin, Libya and Volta Basin, Ghana. Spectroscopy 24, 207-212.
de Leeuw, J. W. Versteegh, G. J. M. and van Bergen, P. F., 2006. Biomacromolecules of plants and algae and their fossil analogues. Plant Ecology 189, 209-233.
Versteegh, G. J. M. and Blokker, P., 2004. Resistant macromolecules of extant and fossil microalgae. Phycological Research 52, 325-339.
Versteegh, G. J. M. Blokker, P. Marshall, C. R. and Pross, J., 2007. Macromolecular composition of the dinoflagellate cyst Thalassiphora pelagica (Oligocene, SW Germany). Organic Geochemistry 38, 1643-1656.
Versteegh, G. J. M. Blokker, P. Wood, G. Collinson, M. E. Sinninghe Damsté, J. S. and de Leeuw, J. W., 2004. Oxidative polymerization of unsaturated fatty acids as a preservation pathway for microalgal organic matter. Organic Geochemistry 35, 1129-1139.
Versteegh, G. J. M. Blokker, P. Bogus, K. Harding, I. Lewis, J. Oltmanns, S. Rochon, A. and Zonneveld, K. A. F., 2012. Infra red spectroscopy, flash pyrolysis, thermally assisted hydrolysis and methylation (THM) in the presence of tetramethylammonium hydroxide (TMAH) of cultured and sediment-derived Lingulodinium polyedrum (Dinoflagellata) cyst walls. Organic Geochemistry 43, 92-102.