Zoja Vukmanovic¹, Marian B Holness², Gautier Nicoli¹, Michael Stock¹, Jens Christian O Andersen³, Samuel Weatherley⁴ and Victoria Honour⁵, (1)University of Cambridge, Cambridge, United Kingdom, (2)University of Cambridge, Earth Sciences, Cambridge, United Kingdom, (3)Univ Exeter, Cornwall, United Kingdom, (4)Teck Resources Limited, Vancouver, BC, Canada, (5)University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom