Organic compounds preserved in a 2.9 million year old stalagmite from the Nullarbor Plain, Australia
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A 2.9 Ma stalagmite from the Nullarbor Plain, South Australia was analysed for organic components. In contrast to previously analysed stalagmites, no significant lipid record was recovered. However, qualitative TMAH thermochemolysis of the residual organic matter recovered a range of compounds, including a number of phenols previously associated with lignin. Comparison of this sample with a range of modern stalagmite samples from different environments indicated that the phenolic record in stalagmites can reflect the overlying vegetation regime, and has potential in investigating palaeoenvironmental change in this climatically important region.
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Identifying “free” and “bound” lipid fractions in stalagmite samples: An example from Heshang Cave, Southern ChinaHuang, X.; Jingwei, C.; Pu, Y.; Huang, J.; Blyth, Alison (2008)Stalagmites are good archives for paleoecological change, as they are easy to date, and contain multiple environmental proxy records, including climatic records from oxygen isotopes. Lipid biomarkers preserved within ...
Blyth, Alison; Baker, A.; Thomas, L.; Van Calsteren, P. (2011)Previous studies on lipid biomarkers preserved in Chinese stalagmites have indicated that ratios of low-molecular-weight (LMW) to high-molecular-weight (HMW) n-alkanes, n-alkan-2-ones, n-alkanols and n-alkanoic acids can ...
Blyth, Alison; Watson, J. (2009)The analysis of organic matter (OM) preserved in stalagmites is a growing field, but there have been few studies of biomarker compounds such as lignin phenols that are widely used in other palaeoenvironmental contexts. ...