Norris Geyser Basin, Yellowstone National Park
by Pete Federico
Title
Norris Geyser Basin, Yellowstone National Park
Artist
Pete Federico
Medium
Photograph - Photography
Description
The colors here, like in other hydrothermal areas, are due to combinations of minerals and life forms that thrive in extreme conditions. At Norris, silica or clay minerals saturate some acidic waters, making them appear milky. Iron oxides, arsenic, and cyanobacteria create the red-orange colors. Cyanidium glows bright green. Mats of Zygogonium are dark purple to black on the surface where they are exposed to the sun, bright green beneath. Sulfur creates a pale yellow hue.
Uploaded
May 16th, 2022
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