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click photo for larger file
Spheroidal weathering of basalt in the Mindego Formation
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Photographer: Ron Wolf
ID: 0000 0000 0510 1976 (2010-05-24)Copyright © 2010 Ron Wolf
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INFORMATION PROVIDED WITH THE PHOTO
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date of photo Dec 20, 2008
location
Russian Ridge Open Space Preserve (San Mateo County, California, US)notes Spheroidal weathering of pillow basalt in an outcrop of the Mindego Formation. The formation is composed primarily of basalt breccia with tuff, pillow lava, ash flows, sandstone and mudstone. It dates from the late Oligocene and early Miocene. This outcrop is near the type location, Mindego Hill.keywords: geology, earth science, weatherng, erosion
camera Canon 40D, 24mm, f/8, 1/800 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 © 2010 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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