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spring-fed pools in canyon, AZ (vertical)
spring-fed pools in Bear Canyon, Catalina Mountains, Arizona (190127-10)
Download ImageMylonitic gneiss of the Catalina Mountains, AZ
Mylonitic gneiss of the Catalina-Rincon Mountains metamorphic core complex, Arizona (190127-8)
Download ImageView northwest to the Catalina Mountains, Arizona
View northwest to the Catalina Mountains, Arizona over the Sonoran Desert from Saguaro National Park East, Arizona (190125-126)
Download ImageFeldspar augen in mylonitic gneiss
Feldspar augen in mylonitic gneiss, Catalina-Rincon metamorphic core complex, Arizona (190125-124)
Download ImageFeldspar augen and lineations in mylonitic gneiss
Feldspar augen and stretching lineations in mylonitic gneiss, Catalina-Rincon metamorphic core complex, Arizona. Note that the handlens is dangling over the xz plane, whereas the lineations are on the xy plane. (190125-121)
Download ImageFeldspar augen in mylonitic gneiss
Feldspar augen in mylonitic gneiss, Catalina-Rincon metamorphic core complex, Arizona (190125-115)
Download ImageMylonitic front of metamorphic core complex, Arizona
Mylonitic front of Catalina-Rincon metamorphic core complex, Saguaro National Park East, Arizona. (190125-114)
Download Imagetraffic jam and Tsunami hazard sign, Oregon
Backed-up traffic while leaving Tsunami Hazard zone, Oregon Coast (180728-42)
Download ImageFallen sandstone blocks, Utah
Sandstone blocks resting on shale and siltstone, having fallen from the cliffs above, Utah. (170331-51)
Download ImageUplifted terrace and wave-cut bench, (Vertical)
Uplifted marine terrace and wave-cut bench, Otter Crest, Oregon coast. Note how many of the waves are breaking on a ring dike of intrusive (invasive) basalt of the Columbia River Basalt Group. (180629-47)
Download ImageUplifted marine terrace and wave-cut bench, OR
Uplifted marine terrace and wave-cut bench, Otter Crest, Oregon coast. Note how many of the waves are breaking on a ring dike of intrusive (invasive) basalt of the Columbia River Basalt Group. (180629-46)
Download ImageSpeleothems in limestone cave
Where a stalagmite merges with a stalactite (as on the left-hand side of this photo), it forms a column. This photo shows a stalagmite and a stalactite that have grown very close to that point of merging, Carlsbad Caverns National Park, New Mexico. (100131-129)
Download ImageSpeleothems in limestone cave (vertical) (vertical)
Where a stalagmite merges with a stalactite (as on the left-hand side of this photo), it forms a column. This photo shows a stalagmite and a stalactite that have grown very close to that point of merging, Carlsbad Caverns National Park, New Mexico. (100131-126)
Download ImageSpeleothems in limestone cave (vertical)
Where a stalagmite merges with a stalactite it forms a column, Carlsbad Caverns National Park, New Mexico (100131-120)
Download ImageStalagmite in limestone cave (vertical)
Detail of a stalagmite, Carlsbad Caverns National Park, New Mexico. (100131-63)
Download ImageFlowstone in limestone cave.
Flowstone, Carlsbad Caverns National Park, New Mexico (100131-49)
Download ImageCinder cone and Owens Valley, California
Cinder cone and Owens Valley, California. Owens Valley is a graben, dropped down between the Sierra Nevada (right-west) and the White/Inyo Mountains (left-east) (181819-26)
Download ImageLake Shasta in drought, California
Low lake levels in Lake Shasta because of long-term drought. (18111-12)
Download ImageMigratory birds, Sacramento Valley, CA
Migratory birds taking flight in the Sacramento Valley, California. (181111-3)
Download ImagePine growing from crack in granitic rock
Pine tree growing from crack in granodiorite of the Sierra Nevada, Yosemite National Park, California. (181110-33)
Download Image
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