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
View north from Plateau Point, south of and above river mile 90.0 toward “Shinumo island,” a highland area during a Cambrian seaway transgression. Cambrian Tapeats Sandstone (strata above granite and schist rock [Great Unconformity], left side of photograph), abuts southwest side of “Shinumo island” (red slope of Hakatai Shale [right side of fault in foreground] and overlying cliff of Shinumo Sandstone, right side of photograph).
Summary
View north from Plateau Point, south of and above river mile 90.0 toward “Shinumo island,” a highland area during a Cambrian seaway transgression. Cambrian Tapeats Sandstone (strata above granite and schist rock [Great Unconformity], left side of photograph), abuts southwest side of “Shinumo island” (red slope of Hakatai Shale [right side of fault in foreground] and overlying cliff of Shinumo Sandstone, right side of photograph).