1. Department of Geology, Carleton College, Northfield, MN, USA
2. National Lacustrine Core Facility, University of Minnesota, Minneapolis, MN, USA
3. Continental Scientific Drilling Coordination Office, University of Minnesota, Minneapolis, MN, USA
4. Department of Physics and Environmental Sciences Program, Trinity College, Hartford, CT, USA
5. Department of Earth and Environmental Sciences, University of Minnesota, Minneapolis, MN, USA