About the Authors

Olev Vinn


Affiliation University of Tartu, Department of Geology, Tartu, Estonia

Mark A. Wilson

Affiliation The College of Wooster, Department of Geology, Wooster, United States of America

Ursula Toom

Affiliation Tallinn University of Technology, Institute of Geology, Tallinn, Estonia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: OV MAW UT. Performed the experiments: OV MAW UT. Analyzed the data: OV MAW UT. Contributed reagents/materials/analysis tools: OV MAW UT. Wrote the paper: OV MAW UT.