1. Energy Geosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
2. Department of Earth and Planetary Sciences, UC-Berkeley, Berkeley, California 94720, United States
3. National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. Department of Environmental Science, Policy and Management Department, UC-Berkeley, Berkeley, California 94720, United States