Field Work

2018: Australia, China, Iceland, Namibia, USA (CA, NV)
2017: Canada, Namibia, Norway, Scotland, USA (AZ, CA)
2016: Namibia, USA (AZ, CO, OR)
2015: Austria, Brazil, Greece, Germany, USA (CA, VA)
2014: Brazil, Chile, China, Namibia, Canada, USA (CO, TN, UT)
2013: Brazil, Namibia, Canada, USA (AZ, KS, VA)
2012: USA (PA, TN, UT, VA)
2011: Russia, USA (PA, VA)
2010: Canada
2009: Russia, USA (VA)