GSNZ Otago branch talk
The biogeochemistry of redox-sensitive elements and the δ238U isotope system in the permanently euxinic Framvaren Fjord with William Preston, University of Otago
The oxygen concentration of the Earth’s ocean-atmosphere regimes has fluctuated numerous times throughout geological time, displaying an intrinsic link to the evolution of life on Earth. Through the utilisation of redox-sensitive elements and their isotope systems, as proxies for investigating oxygen depleted conditions from sedimentary archives, palaeo-environmental reconstructions can be conducted during times of server climatic disturbance. However, for the accurate and reliable deployment of such palaeo-environmental proxies, it is necessary to examine how redox-sensitive elements and their isotope systems behave in modern environments of varying oxygen depletion. Therefore, the distribution and behaviour of redox-sensitive elements and the uranium isotope system was examined in Framvaren Fjord, a highly oxygen depleted marine basin with conditions similar to Earth in the past.
This talk will take place in person in the Benson Common Room (Gn9, Geology Building) AND will be available live on Zoom at the following link: https://bit.ly/otagogeology.
Contact: Jack Williams jack.williams@otago.ac.nz