About the Authors

Yoshihiro Tanaka

yoshihiro.tanaka@otago.ac.nz

Affiliation Department of Geology, University of Otago, Dunedin, New Zealand

R. Ewan Fordyce

Affiliation Department of Geology, University of Otago, Dunedin, New Zealand

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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