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Photos typically include their locations, so you can use locations as keywords too. You get more hits with shorter words, and fewer hits as you become increasingly specific with increasing numbers of keywords. It’s best to use singular rather than plural (eg “volcano” instead of “volcanoes”).
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Native gold in quartz vein
Native gold in vein, hosted by quartz. Sample is 7 cm across. (IMG_2710)
Download ImageBoulders on alluvial fan, California
Boulders on alluvial fan, Death Valley National Park, California. The canyon, at the apex of the fan, can be seen in the background. It is a wineglass canyon, formed by erosion of an actively rising mountain next to a fault zone. (IMG_1345)
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Deflection of stream along San Andreas Fault
San Andreas fault at Wallace Creek in the Carrizo Plain, California, view towards the northeast. Note how the stream gully is abruptly deflected to the right about 10 meters. That deflection was caused by right-lateral slip events (earthquakes) on the fault. The deflection is not particularly great, because the stream gully is young. (IMG_1396)
Download ImageBoulders on alluvial fan (vertical)
Boulders on alluvial fan, Death Valley National Park, California. The canyon, at the apex of the fan, can be seen in the background. It is a wineglass canyon, formed by erosion of an actively rising mountain next to a fault zone. (IMG_1343)
Download ImageSkolithos, a trace fossil.
Skolithos tubes in Cambrian quartzite, Mojave Desert. The rock unit is the Zabriskie Quartzite; bedding dips to the left, Skolithos, which are vertical worm(?) burrows are perpendicular to bedding. Photo is about 1.5 meters across. (IMG_1306)
Download ImageRock split by thermal expansion
Rock split by thermal expansion, Mojave Desert, California. (IMG_1286)
Download ImageSkolithos, a trace fossil.
Skolithos tubes in Cambrian quartzite, Mojave Desert. The rock unit is the Zabriskie Quartzite; bedding dips to the left, Skolithos, which are vertical worm(?) burrows are perpendicular to bedding. Photo is about 0.5 meters across. (IMG_1310)
Download ImageTilted beds of conglomerate–hammer for scale
Tilted beds of conglomerate, SE California. (IMG_1277)
Download ImageTilted beds of conglomerate, SE California.
Tilted beds of conglomerate, SE California. (IMG_1276)
Download ImageDeath Valley salt pan (vertical)
Salt flats of Death Valley, California. The polygons are formed by precipitation of new salt in shrinkage cracks. (IMG_1241)
Download ImageDeath Valley salt pan (vertical)
Salt flats of Death Valley, California. The polygons are formed by precipitation of new salt in shrinkage cracks. (IMG_1258)
Download ImageAthabasca Glacier in retreat
Monument shows location of the terminus of the Athabasca Glacier in 1935. Jasper National Park, Alberta, Canada.
Download ImageVentifact and deflation hollow in sand
Ventifact and deflation hollow in sand, Mojave Desert, California (IMG_1209)
Download ImageIntersecting salt-filled dessication cracks
Intersecting salt-filled dessication cracks, Death Valley National Park, California. (IMG_1218)
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Sidewalk offset by creep, Hollister, California
Sidewalk offset by creep (right-lateral) on Calaveras fault, Hollister, California. (IMG_0317)
Download ImageGlacial erratic, Washington
Glacial erratic: granitic boulder surrounded by shale bedrock, San Juan Islands, Washington.
Download ImageGlacial till, Sierra Nevada, California
This unsorted mixture of unstratified rock was deposited directly by a glacier. (Gl-27)
Download ImageGlacial moraine, Sierra Nevada
Aerial view of glacial moraine near Convict Lake in the Sierra Nevada, California. Photo shows terminal, lateral, and recessional moraines. (Gl-29)
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