The final step for this week in the labs was using the Frantz machine.
Firstly I had to crush the samples in the workshop to shards, and then grind them down on a disc miller.
This was very noisy and dusty, and fairly hard work, but good fun.
I collected the samples in the field in 20: Having collected the samples in the field and received funding to run them, I went up to the Scottish Universities Environmental Reserach Centre (SUERC) laboratories in East Kilbride to start the process!
As 10-Beryllium and 26-Aluminium preferentially build up in quartz, the aim of the first week was to crush down the samples and extract as pure quartz as we could.
La revue Nature publie trois articles sur cette découverte, dont deux de l'équipe, dans son numéro de juillet 2012.
Des méthodes de datations biogéochronologiques ont permis d'estimer l’âge de Toumaï à environ 7 millions d'années, en se fondant sur le degré d'évolution des mammifères présents à ses côtés, par comparaison avec d'autres faunes africaines similaires.The main objective of my Ph D is to reconstruct the retreat of the Uummannaq Ice Stream System, a large system of coalescent ice streams in West Greenland.To constrain the timing of the retreat of this ice, we are using a technique known as cosmogenic nuclide dating.This provides an ideal method for determining when a glacier retreated from a region, hence exposing the ground beneath.Technological developments in the last few decades have allowed more precise measurements of their concentration in terrestrial rock samples and this dating technique is becoming increasingly popular.Our samples are now pre-treated at the University of Canterbury.