Billingsley, G.H., Goodwin, G., Nagorsen, S.E., Erdman, M.E., and Sherba, J.T., 2019, Geologic and related photographs of the Grand Canyon region (1967–2010): U.S. Geological Survey data release, accessed [Month Day, Year], at https://doi.org/10.5066/F7WS8SHW.
Summary
River-polished Vishnu Schist, north bank of Crystal Rapids, river mile 98.7.
Summary
River-polished Vishnu Schist, north bank of Crystal Rapids, river mile 98.7.