About the Authors

Espen Jettestuen

Affiliations Physics of Geological Processes, University of Oslo, Oslo, Norway, International Research Institute of Stavanger, Stavanger, Norway

Anders Nermoen

Affiliation Physics of Geological Processes, University of Oslo, Oslo, Norway

Geir Hestmark

Affiliation Department of Biology, University of Oslo, Oslo, Norway

Einar Timdal

Affiliation Natural History Museum, University of Oslo, Oslo, Norway

Joachim Mathiesen

mathies@nbi.dk

Affiliations Physics of Geological Processes, University of Oslo, Oslo, Norway, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EJ AN GH ET JM. Performed the experiments: EJ AN GH ET JM. Analyzed the data: EJ AN GH ET JM. Contributed reagents/materials/analysis tools: EJ AN GH ET JM. Wrote the paper: EJ AN GH ET JM.