She specialises in constructing precise chronologies for archaeological sites and finds through the statistical modelling of radiocarbon dates.
Published 15 March 2008 This volume holds a datelist of 647 radiocarbon determinations carried out between 20 in support of research funded by English Heritage through the Aggregates Levy Sustainability Fund.
The terrestrial carbon cycle is fairly simple: plants get their carbon from the atmosphere via the process of photosynthesis; herbivores get their carbon from plants, and carnivores from the herbivores.
After the death of the organism, processes of decay will return its carbon to the atmosphere, unless it is sequestered — for example in the form of coal.
Thirdly, it is in the nature of the method that it can only be applied to organic remains: it makes no sense to apply it to rocks or to mineralized fossils.
Fourthly, the carbon in the organic remains does have to originate with the terrestrial carbon cycle and with plants performing photosynthesis.