1. Lamont‐Doherty Earth Observatory Columbia University Palisades NY USA
2. Department of Earth and Environmental Sciences Columbia University New York NY USA
3. Department of Geosciences University of Arizona Tucson AZ USA
4. Department of Environment Engineering and Earth Sciences Clemson University Clemson SC USA
5. Department of Earth, Atmospheric and Planetary Sciences Massachusetts Institute of Technology Cambridge MA USA
6. Berkeley Geochronology Center Berkeley CA USA
7. Division of Geological and Planetary Sciences California Institute of Technology Pasadena CA USA
8. School of Geography Queen Mary University of London London UK