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Sub-glacial Water Polish
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Photographer: Ron Wolf
ID: 0000 0000 0711 0970 (2011-07-12)Copyright © 2011 Ron Wolf
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INFORMATION PROVIDED WITH THE PHOTO
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date of photo Jun 27, 2011
location
Tuolumne Meadows. Yosemite National Park (Tuolumne County, California, US)notes Sub-glacial Water Polish on Pothole Dome. This undulating polished granite surface was created by water flowing beneath the glaciers that covered Pothole Dome during the Tioga Stage about 20,000 years ago - not by the movement of the ice itself. Streams flowing beneath the glaciers carried rocks, gravel, sand and rock dust that abraded and this part of the dome.keywords: earth science, geology, glacier, glaciation, erosion, vertical, geomorphology
camera Canon 40D, 15mm, f/16, 1/1250 sec.
photo category: Misc. - geology
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Using this photo The thumbnail photo (128x192 pixels) on this page may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law as long as the photo is clearly credited with © 2011 Ron Wolf.
For other uses, or if you have questions, contact Ron Wolf RonWolf[AT]EyeOnNature.com. (Replace the [AT] with the @ symbol before sending an email.) |
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