- Received 6 April 2016.
- Revision received 2 September 2016.
- Accepted 18 November 2016.
Copyright & Usage
©The Authors Gold Open Access: This paper is published under the terms of the CC-BY license.
- Eric W. Portenga1,
- Paul R. Bierman2,
- Charles D. Trodick3,
- Sophie E. Greene3,
- Benjamin D. DeJong2,
- Dylan H. Rood4 and
- Milan J. Pavich5
- 1Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA
- 2Geology Department and Rubenstein School of the Environment and Natural Resources, University of Vermont, Burlington, Vermont 05405, USA
- 3Geology Department, University of Vermont, Burlington, Vermont 05405, USA
- 4Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK and Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
- 5Consulting Geologist, Takoma Park, Maryland 20912, USA