Search for any geological feature below
–then click on the image to see a larger version in its correct format, a more detailed caption, and an ID number.
and please drop me a line if you find this site useful!
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.
Or you can just scroll down and see the most recently added photos… Enjoy!
Volcanoes of the Oregon Cascade Range, view northward. Snow-capped peaks are Hood (far left) and Jefferson (center). Three-Fingered Jack, an eroded shield, is just right-of-center. Hayrick Butte, a Tuya, forms the flat-topped feature in the middleground. (200704-4)Download Image
Mount Washington (left) and Belknap Crater (right), two basaltic shield volcanoes in the Cascade Range of Oregon. Mt. Washington, long extinct, is a deeply eroded neck whereas Belknap is much not eroded because it’s much younger. Twin Craters, a cinder cone, occupies the right middleground. (200704-2)Download Image
Pyroclastic flow (Ash flow tuff) from the 7700BP eruption of Mt. Mazama at the Pinnacles, Crater Lake National Park, Oregon. (08-8645)Download Image
South Falls spills over a flow of Wanapum Basalt at Silver Falls State Park, Oregon. The Alcove behind the falls formed by differential erosion of a recessive sedimentary rock unit between it and the underlying Grande Ronde Basalt. (190420-37)Download Image
Grande Ronde Basalt at Middle North Falls, Silver Falls State Park, Oregon (150119-83)Download Image
North Falls at Silver Falls State Park, Oregon. It spills over a flow of Wanapum Basalt. The alcove behind the falls is eroded along recessive sedimentary rocks that lie between the Wanapum and underlying Grande Ronde Basalt. (150119-24)Download Image