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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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