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!
*****
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.
Or you can just scroll down and see the most recently added photos… Enjoy!
Porphyritic Steens Basalt, Oregon
Large plagioclase phenocrysts in basalt of Steens Mountain (part of the Columbia River Basalt Group -CRBG- Oregon (181017-43)
Download ImageGlacial Valley, Steens Mountain, Oregon
Glacially carved, U-shaped valley into flows of the Steens Basalt, Big Indian Creek, Steens Mountain, Oregon (181017-23
Download ImageBase-surge deposit in Rattlesnake Tuff, Oregon
Base-surge deposit in Rattlesnake Ash Flow Tuff, Oregon (181017-9)
Download ImageSpherulites in tuff, Oregon (vertical)
Spherulites in Rattlesnake Ash Flow Tuff, Oregon (181017-3)
Download ImageRattlesnake Ash Flow Tuff, Oregon
Rattlesnake Ash Flow Tuff with stratified base-surge deposit at the bottom, Oregon (181017-1)
Download ImageCliffs of Ash Flow Tuff, Smith Rocks, Oregon
Cliffs of Ash Flow Tuff and Crooked River, Smith Rock State Park, Oregon. Cascade Volcanoes in background. (181016-57) pyroclastic
Download ImageRattlesnake Ash Flow Tuff, Oregon
Tuff and rhyolite dike at Smith Rock State Park, Oregon. (181016-32) pyroclastic
Download ImageCliffs of Ash Flow Tuff, Oregon (vertical)
Cliffs of Ash Flow Tuff, Smith Rock State Park, Oregon. (181015-22) pyroclastic
Download ImageCliffs of Ash Flow Tuff, Oregon
Cliffs of Ash Flow Tuff, Smith Rock State Park, Oregon (181015-20)
Download ImageEstuary: Siuslaw River, Oregon
Aerial view of Siuslaw River entering the Pacific Ocean near Florence, Oregon. Note the coastal dunes.
Download Imagegranite with minerals identified (pan)
granite close-up with biotite, quartz, orthoclase, and plagioclase feldspar minerals identified (pan) IP18-1012ce
Download ImageDuctile shear zone in gneiss (pan)
Ductile shear zone in gneiss, annotated on right (IP18-0982e)
Download ImageAlteration along fractures in serpentinite
Alteration along fractures in serpentinite (IP18-0971)
Download ImageDismembered pegmatite in gneiss
Folded and dismembered pegmatite in gneiss. Photo is about 1 meter high. (IP18-0966)
Download ImageStylolites offset by faults in quartzite
Stylolites and bedding offset by faults in quartzite (IP18-0942)
Download ImagePlagioclase phenocrysts in basalt
Plagioclase phenocrysts in Steens Basalt–the earliest part of the Columbia River Basalt Group (CRBG) (181017-66)
Download ImagePlagioclase phenocrysts in basalt
Plagioclase phenocrysts in Steens Basalt, the oldest part of the Columbia River Basalt Group (CRBG), Oregon. Photo is about 20cm across. (181118-65) close-up
Download ImageGlacial Valley, Steens Mountain, Oregon
Glacial, U-shaped valley carved into lavas of the Steens Basalt. Little Blitzen River, Steens Mountain, Oregon (181017-52)
Download ImagePlagioclase phenocrysts in basalt
Plagioclase phenocrysts in Steens Basalt, the oldest part of the Columbia River Basalt Group (CRBG), Oregon. Penny for scale. (181118-44)
Download ImageBasaltic feeder dikes, Steens Mtn., Oregom
Feeder dikes and lava flows of Steens Basalt, Steens Mountain, Oregon. (181017-36)
Download ImageGlacial Valley, Steens Mountain, Oregon
Glacial, U-shaped valley carved into lava flows of Steens Basalt. Wildhorse Canyon, Steens Mountain, Oregon (181017-33)
Download Image
You must be logged in to post a comment.