Bridie Verity Davies¹, Matthew Andrew², Katherine J Dobson³, Jenni Barclay¹ and Richard J Brown⁴, (1)University of East Anglia, School of Environmental Sciences, Norwich, United Kingdom, (2)Zeiss (formally Xradia, Inc.), Pleasanton, CA, United States, (3)University of Strathclyde, Department of Earth Sciences, Glasgow, United Kingdom, (4)University of Durham, Department of Earth Sciences, Durham, United Kingdom