About the Authors

Patrick Zell

Patrick.Zell@geow.uni-heidelberg.de

Affiliation Institut für Geowissenschaften, Universität Heidelberg, Heidelberg, Germany

Wolfgang Stinnesbeck

Affiliation Institut für Geowissenschaften, Universität Heidelberg, Heidelberg, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PZ WS. Performed the experiments: PZ. Analyzed the data: PZ. Contributed reagents/materials/analysis tools: WS. Wrote the paper: PZ WS. Collected samples: WS. Designed the figures: PZ.