About the Authors

Mats E. Eriksson

Affiliation Department of Geology, Lund University, Lund, Sweden

Fredrik Terfelt

fredrik.terfelt@geol.lu.se

Affiliation Department of Geology, Lund University, Lund, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MEE FT. Performed the experiments: MEE FT. Analyzed the data: MEE FT. Contributed reagents/materials/analysis tools: MEE FT. Wrote the paper: MEE FT.