Devil's Postpile in the Rain
by Janis Knight
Title
Devil's Postpile in the Rain
Artist
Janis Knight
Medium
Photograph - Color Digital
Description
Devil's Postpile is an amazing and unusual rock formation of columnar basalt located near Mammoth Lakes, California. from Wikipedia: The Postpile's columns average 2 feet (0.61 m) in diameter, the largest being 3.5 feet (1.1 m), and many are up to 60 feet (18 m) long. Together they look like tall posts stacked in a pile, hence the feature's name. If the lava had cooled perfectly evenly, all of the columns would be expected to be hexagonal, but some of the columns have different polygonal cross-sections due to variations in cooling. A survey of 400 of the Postpile's columns found that 44.5% were 6-sided, 37.5% 5-sided, 9.5% 4-sided, 8.0% 7-sided, and 0.5% 3-sided.[12] Compared with other examples of columnar jointing, the Postpile has more hexagonal columns. Another feature that places the Postpile in a special category is the lack of horizontal jointing.
ref: 1658
Uploaded
August 24th, 2015
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Viewed 248 Times - Last Visitor from White Plains, NY on 04/13/2024 at 12:10 AM
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Comments (2)
Donna Kennedy
Fabulous image of the post pile Janis!...F/L
Janis Knight replied:
thank you Donna! I've wanted to photograph Devils Post Pile in the rain for a long time, but it's hard to get the timing right.
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