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
Aerial view north toward Basalt Canyon, about 1 mile north of river mile 70.1. Mesoproterozoic and Neoproterozoic strata of Basalt Canyon. Ochoa Point Member of Dox Formation, Unkar Group (lower red), Cardenas Basalt, Unkar Group (black cliffs), overlain by Nankoweap Formation (purple ledges), and overlying Tanner and Jupiter Member of Galeros Formation, Chuar Group (tan lower and upper part of slope) below Cambrian cliff of Tapeats Sandstone.
Summary
Aerial view north toward Basalt Canyon, about 1 mile north of river mile 70.1. Mesoproterozoic and Neoproterozoic strata of Basalt Canyon. Ochoa Point Member of Dox Formation, Unkar Group (lower red), Cardenas Basalt, Unkar Group (black cliffs), overlain by Nankoweap Formation (purple ledges), and overlying Tanner and Jupiter Member of Galeros Formation, Chuar Group (tan lower and upper part of slope) below Cambrian cliff of Tapeats Sandstone.