This content is PDF only. Please click on the PDF icon to access.
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
GEO volume 155 issue 7 Cover and Front matter. Geological Magazine 2018;; 155 (7): f1–f2. doi: https://doi.org/10.1017/S0016756818000353
Download citation file: