About the Authors

Peter W. Abrahams

pwa@aber.ac.uk

Affiliation Institute of Geography and Earth Sciences, Aberystwyth University, Ceredigion, United Kingdom

Theo C. Davies

Current address: Department of Mining and Environmental Geology, University of Venda, Thohoyandou, South Africa

Affiliation Department of Geology and Mining, University of Jos, Jos, Nigeria

Abiye O. Solomon

Affiliation Department of Geology and Mining, University of Jos, Jos, Nigeria

Amanda J. Trow

Affiliation Institute of Geography and Earth Sciences, Aberystwyth University, Ceredigion, United Kingdom

Joanna Wragg

Affiliation British Geological Survey, Keyworth, Nottingham, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PWA JW. Performed the experiments: PWA AJT. Analyzed the data: PWA AJT AOS. Contributed reagents/materials/analysis tools: TCD AOS JW. Wrote the paper: PWA JW.