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Tufa deposits, Mono Lake, California
Tufa deposits and Mono Lake, Mono Lake Tufa State Natural Reserve, California (111119-43)
Download ImageTufa deposits, Mono Lake, California
Tufa deposits, Sierra Nevada mountains, and Mono Lake, Mono Lake Tufa State Natural Reserve, California (111119-30)
Download ImageTufa deposits, Mono Lake, California
Tufa deposits, Sierra Nevada mountains, and Mono Lake, Mono Lake Tufa State Natural Reserve, California (111119-15)
Download ImageSandy beach and fog, Oregon
Sandy beach, fog, and headlands, Washburn State Park, Oregon (110910-3)
Download ImageOlivine irich lherzolite inclusions in basalt
Olivine irich lherzolite (peridotite) inclusions in basalt. mm scale. (110725-16)
Download ImageGlacial arete, Colorado
Glacial arete, a narrow ridge between two cirques, McHenry’s Peak, Rocky Mountain National Park, Colorado. Bedrock is Proterozoic granite.(110716-58)
Download ImageAmargosa Valley in flood, California
Amargosa Valley, in the Mojave Desert, in flood, California (101230-52)
Download ImageAmargosa Valley in flood, California
Amargosa Valley, in the Mojave Desert, in flood, California (101230-48)
Download ImageMangrove swamp, south Florida
Mangrove swamp, Everglades National Park, southern Florida (101223-10)
Download ImageRoots and reflections of mangroves, Florida
Mangrove swamp, Everglades National Park, southern Florida (101223-7)
Download ImageSoft-sediment deformation of ash, SE California
Soft-sediment deformation of Yellowstone volcanic ash, SE California. These features are considered earthquake-induced.seismites. (101125-102)
Download ImagePurcell Sill, Glacier National Park, Montana
Purcell Sill, a diorite intrusion into the Proterozoic Belt Supergroup of Glacier National Park, Montana (100712-24)
Download ImageGroundwater issuing from bedrock spring, MT (vertical)
Groundwater issuing from limestone spring, Montana (100710-55)
Download ImageStromatolites in Proterozoic Helena Dolomite, MT
Stromatolites in Proterozoic Helena Dolomite of the Belt Supergroup, Glacier National Park, Montana (100710-42)
Download ImageOverturned anticline and thrust faults, Montana
Overturned anticline and thrust faults in Cretaceous Blackleaf Formation in the Disturbed Belt of northern Montana. (100710-2)
Download ImageGreat unconformity, SW Montana
Great unconformity, a nonconformity between Cambrian Flathead Sandstone above Proterozoic basement. SW Montana (100629-10)
Download ImageCinder cone. Craters of the Moon, Idaho
Cinder cone. Craters of the Moon National Monument, Idaho (100628-58)
Download ImageCinders and cinder cone, Idaho
Cinders and cinder cone. Craters of the Moon National Monument, Idaho (100628-10)
Download ImageCinders and cinder cone, Idaho
Cinders and cinder cone. Craters of the Moon National Monument, Idaho (100628-2)
Download ImageLow tide on estuary, northern Maine (100607-29)
Low tide on estuary, northern Maine (100607-29)
Download ImageWelded pumice overlying lava flow, OR (vertical)
Welded pumice overlying Cleetwood lava flow, Crater Lake National Park, Oregon. The presence of welding in the pumice indicates the flow was still hot when the pumice landed. (091011-7). volcanic, volcanism
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