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SOME POINTERS:
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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Anti-dilational jog in en-echelon faults (vertical)

Breccia and calcite mineralization in zone between two left-stepping right-lateral strike-slip faults. (3FFSrx-1c)
Download ImageTumulus in pahoehoe basalt flow, Iceland

Tumulus in pahoehoe lava flow, Iceland, showing fractured outer surface (180912-179)
Download ImageTumuli in pahoehoe basalt flow, Iceland

Tumuli in pahoehoe lava flow, Iceland, showing fractured outer surfaces (180912-176)
Download ImageTumuli in basalt flow, Iceland

Tumuli in basaltic lava flow, Iceland, showing fractured outer surfaces (180912-173)
Download ImageTumuli in basalt flow, Iceland

Tumuli in basaltic lava flow, Iceland, showing fractured outer surfaces (180912-167)
Download ImagePrecipitation of silica from geothermal water

Precipitation of silica on basalt from geothermal water. Blue Lagoon, Iceland (180912-114)
Download ImagePrecipitation of silica from geothermal water

Precipitation of silica on basalt from geothermal water. Blue Lagoon, Iceland (180912-141)
Download Imagegeothermal water rich in colloidal silica

geothermal water rich in colloidal. Blue Lagoon, Iceland (180912-129)
Download Imagegeothermal water rich in colloidal silica

geothermal water rich in colloidal. Blue Lagoon, Iceland (180912-118)
Download ImageGeothermal water pipelines (vertical)

Geothermal water pipelines, SW Iceland. (180912-101)
Download ImageGeothermal water pipelines (vertical)

Geothermal water pipelines, SW Iceland. (180912-100)
Download ImageSea stack and breaking wave, SW Iceland

Sea stack and breaking wave, SW coast of Iceland (180912-96)
Download ImageZoned basalt dike (vertical)

Basaltic dike with flow banding and chilled margin cutting palagonite tuff, Iceland. (180912-82) igneous intrusion
Download ImageZoned basalt dike

Basalt dike with flow banding and chilled margin cutting palagonite tuff, Iceland. (180912-82)
Download ImageBeach boulders and breaking wave, Iceland

Beach boulders and breaking wave, Iceland (180912-60)
Download ImageRocky coastline and breaking wave, Iceland

Rocky coastline with rounded boulders, seastack, and breaking wave, SW Iceland (180912-59)
Download ImageRocky coastline and breaking wave, Iceland

Rocky coastline with seastack and breaking wave, SW Iceland (180912-49)
Download Image
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