Archive - Geological Rainbow
July 14, 2019
Each Sunday we present a notable item from our archives. This EPOD was originally published July 20, 2013.
Photographer: Cindy Todd
Summary Author: Cindy Todd
The photo above shows what looks like a geological rainbow -- in shades of Neapolitan or sherbet. It was snapped in the Valley of Fire State Park, Nevada, in the Mojave Desert. The rock formations here are composed primarily of sandstone, though; some limestone, calcite, gypsum, and quartz can be found. The eye-catching colors of the outcrop in the foreground result from oxidation of sandstone. Note the desert varnish (darkened surfaces) at upper left. Photo taken on May 20, 2013.
Photo Details: Camera: NIKON COOLPIX L610; Focal Length: 63.0mm (35mm equivalent: 350mm); Aperture: f/5.9; Exposure Time: 0.0013 s (1/800); ISO equiv: 125; Software: COOLPIX L610V1.0.
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