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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”).

As some words are included in others (“salt” within “basalt,” for example) you might want to be more specific to avoid getting a bunch of irrelevant photos.

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5332 images found

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Folded sandstone bed in cleaved shale

Folded sandstone bed from dissolution along cleavage in shale. (8UW86-125)

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Mafic dike cutting granitic rock, Wisconsin

Cross-cutting relations: granitic rock (Proterozoic tonalite) cut by quartz vein (lower right) and then cut by a mafic dike (note inclusion of granitic rock in dike and chilled margin along intrusive contact). All later broken by a fracture. near Chippewa Falls, Wisconsin. (20Wis-4)

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