Pumpkin Spring, Grand Canyon, AZ
Pumpkin Spring, Grand Canyon National Park, Arizona (IP2605-2822) thermal, mineralization, arsenic
Download ImageGreat Unconformity, Grand Canyon, AZ
Great unconformity. Nonconformity between Cambrian Tapeats Sandstone overlying Proterozoic Basement rock. Grand Canyon National Park, Arizona (IP2605-2612)
Download ImageDelta Sediments, Lake Mead, NV-AZ
Sediments of the Colorado River delta at the edge of Lake Mead, Arizona (260524-36)
Download ImageDelta Sediments, Lake Mead, NV-AZ
Sediments of the Colorado River delta at the edge of Lake Mead, Arizona. (260524-29)
Download Imagetopography on Great Unconformity, AZ
Topographic relief on the Great Unconformity: Cambrian Tapeats Sandstone on Proterozoic Granite. Lower Grand Canyon, Arizona (250524-20)
Download ImageNonconformity and buttress unconformity, AZ
View of the Great Unconformity –a nonconformity between the Cambrian Tapeats Sandstone overlying Proterozoic granite, which forms a buttress unconformity with Holocene Lake Mead sediment! Grand Canyon and Colorado River, Arizona. (250524-15)
Download ImageDelta Sediments, Lake Mead, NV-AZ
Sediments of the Colorado River delta at the edge of Lake Mead, Arizona. (260524-12)
Download ImageFormer river bottom carved into sandstone, AZ
Former river channel bottom eroded into Cambrian Tapeats sandstone, Grand Canyon, Arizona (260523-82) water erosion, fluting, abrasion
Download ImageRiver erosion: a pothole in sandstone, Arizona
River erosion: a pothole eroded through a ledge in the Cambrian Tapeats Sandstone, Grand Canyonm Arizona
Download ImageMigmatite, Grand Canyon, AZ
Migmatite in the Proterozoic basement rock of the Grand Canyon, Arizona (260523-60)
Download ImageErosional fluting of granite, Arizona
Fluting of granitic rock caused by weathering and erosion along the Colorado River, Grand Canyon National Park, Arizona (260523-53)
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Volcanic Neck, “Vulcan’s Forge”: Grand Cyn, AZ
Vulcan’s Forge, an eroded Pleistocene volcanic neck in the Colorado River in Grand Canyon National Park. Cliffs in the background consist of Cambrian Muav Limestone, Mississippian Redwall Limestone, and Pennsylvanian-Permian Supai Group (260622-163)
Download ImageTravertine terrace deposit, Havasu, AZ
Travertine terrace, Havasu Creek, Grand Canyon National Park, Arizona. (260522-153)
Download ImageQ basalt and Colo River, AZ
Quaternary basalt flow of the Uinkaret Volcanic field and the Colorado River, Grand Canyon National Park, Arizona. Cambrian sedimentary rock of the Muav Limestone forms the cliffs in the background. (260522-140)
Download ImageQ basalt overlying Colo River gravel, AZ
Quaternary basalt flow of the Uinkaret Volcanic field overlying Colorado River gravel next to the Colorado River, Grand Canyon National Park, Arizona. (260522-137)
Download ImageBasalt flow and Colo River, Arizona
Quaternary basalt lava flow of the Uinkaret Volcanic field showing irregular entablature and the Colorado River, Grand Canyon National Park, Arizona. (260522-136)
Download ImageColonnade and entablature in Q basalt, Arizona
Colonnade and irregular entablature of Quaternary basalt flow of the Uinkaret Volcanic field, Grand Canyon National Park, Arizona. Note the Colorado River Gravels beneath the flow. (260522-126)
Download ImageQ basalt lava flow and Colo River, G Cyn, AZ
Quaternary basalt flow of the Uinkaret Volcanic field and the Colorado River, Grand Canyon National Park, Arizona. Cambrian Muav Limestone forms the cliffs in the background.(260522-125)
Download ImageQ basalt lava flow G Cyn, AZ (vertical)
Quaternary basalt flow of the Uinkaret Volcanic field and the Colorado River, Grand Canyon National Park, Arizona. Cambrian sedimentary rock of the Muav Limestone forms the cliffs on the right (260522-114)
Download ImageQuaternary basalt, Grand Canyon, Arizona
Quaternary basalt flow of the Uinkaret Volcanic field and the Colorado River, Grand Canyon National Park, Arizona. (260522-112)
Download ImageBasalt flow, Grand Canyon, AZ
Quaternary basalt flow of the Uinkaret Volcanic field stranded above the Colorado River, Grand Canyon National Park, Arizona. (260522-101)
Download ImageVolcanic Neck, “Vulcan’s Forge”: Grand Cyn, AZ
Vulcan’s Forge, an eroded Pleistocene volcanic neck in the Colorado River in Grand Canyon National Park (260522-67)
Download ImageVolcanic neck, Grand Canyon, AZ (vertical)
Vulcan’s Forge, an eroded Pleistocene volcanic neck in the Colorado River in Grand Canyon National Park. Cliffs in the background consist of Cambrian Muav Limestone, Mississippian Redwall Limestone, and Pennsylvanian-Permian Supai Group (260622-64)
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