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Aerial view north into Surprise Canyon, about 3 miles northeast of river mile 248.8. Muav Limestone (canyon bottom), Redwall Limestone (large gray cliff), Supai Group strata (reddish cliffs and slopes, upper right skyline), Permian strata (distant canyon rims), and Pliocene volcano of Mount Dellenbaugh (distant skyline).
View west toward small southwest-dipping sharp fold in Tapeats Sandstone in Monument Creek, below Tonto Trail, about three quarters of a mile south of river mile 94.0.
Aerial view north toward 900-foot-thick Cardenas Basalt of Unkar Group (black), that overlies Ochoa Point Member of Dox Formation, Unkar Group (red slope), overlain by Nankoweap Formation (purple strata), west side of Ochoa Point, 1 mile northwest of river mile 71.0.
View south and downriver toward Coconino Sandstone (black layer at river level), overlain by cliff of Brady Canyon Member of Toroweap Formation on west side of river mile 4.7.
View northwest along Froggy Fault toward Parashant Canyon in red Supai Group of rocks.
View north into Hundred and Ninetythree Mile Creek from east side of Hurricane Fault. Redwall Limestone, right side of photograph; red Supai Group, left side.
Photograph showing breccia in breccia pipe in Redwall Limestone, 1 mile southwest of river mile 232.0.
Aerial view northeast toward Grand Gulch copper mine and breccia pipe in Pakoon Limestone.
Aerial view toward gravel of Surprise Canyon Formation filling cave in Redwall Limestone, west wall of upper Two Hundred and Thirtyfour Mile canyon, about 1.75 miles south of river mile 234.0.
View northeast toward southwest side of Twin Butte, landslide-covered Triassic Moenkopi Formation capped by Pliocene basalt.
Aerial view south and downriver from river mile 211.9 toward a Precambrian “island” of schist (photographs WM07, WM08, WM09) during the basal Cambrian sea encroachment, right bank of river mile 212.5.
Aerial view northwest toward Surprise Canyon Formation (dark red) in channel eroded into Redwall Limestone, west wall of Two Hundred and Seventeenmile Canyon.
Aerial view northeast toward Temple Butte Formation, upper slope, middle cliff, and upper half of lower slope below cliff of Redwall Limestone (top left of photograph), three quarters of a mile west of river mile 216.5.
These data were compiled for investigating the relationship between acoustic backscattering by riverbeds composed of various riverbed substrates (bed sediment), and for developing and testing a probabilistic model for substrate classification based on high-frequency multibeam acoustic backscatter. The model is described in Buscombe et al. (2017). The data consist of various quantities on coincident grids, from various sites along the Colorado River in Grand Canyon, including water depth, bed roughness, the area (or footprint) of the acoustic beam, unfiltered and filtered backscatter magnitude, sediment classification (for each location, 1 of 5 sediment classes in a categorical scheme), and the probabilities for...
This ESRI geodatabase consists of 5 feature datsets with 23 individual polygon feature classes and two raster datasets. A master campsite polygon feature class represents the boundaries of campsites identified in the 1973, 1984, and 1991 campsite inventories of the Colorado River corridor in Grand Canyon, Arizona. The other polygon feature classes represent camp locations along the Colorado River corridor in Grand Canyon, Arizona during different survey periods using different surveying techniques. The raster datasets represent sub-aerial and sub-surface sandbar surfaces at 37 long term-monitoring sites between Lees Ferry and Diamond Creek, Arizona in Grand Canyon National Park, measured in September and October...
Aerial view northwest toward Lizard Dike (basalt) cutting through Solomon Temple Member (lower red), Comanche Point Member (red and white), and Ochoa Point Member (upper red) of Dox Formation below Cardenas Basalt (black) of Unkar Group, and east-dipping Nankoweap Formation (purple ledges) from above river mile 71.7. Great Unconformity at base of brown horizontal Cambrian Tapeats Sandstone cliff.
Aerial view northeast and upriver toward Little Colorado River delta (right) and Colorado River (left) confluence from west of river mile 62.0.
View west toward Horse Flat Canyon Landslide in Bright Angel Shale, north wall of Horse Flat Canyon, about 2.5 miles from river mile 253.0.
Aerial view northeast toward Malgosa Canyon breccia pipe at top of Redwall Limestone, just east of Malgosa Canyon on east side of river mile 58.0.
View west and downriver from river mile 45.0 toward Triple Alcoves, a cave in lower part of Redwall Limestone (below white salt stain), Marble Canyon.
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