About the Authors

Barbara P. Nash
Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah, United States of America

Corresponding Author

barb.nash@utah.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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