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Alkaline hot spring outflow channel in the Biscuit Basin

By Yellowstone Volcano Observatory 2019 (approx.)
Alkaline hot spring outflow channel in the Biscuit Basin with a wide array of phototrophic microbial community textures
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Detailed Description

A wide array of phototrophic microbial community textures exhibited in an alkaline (pH ~8.5) hot spring outflow channel in the Biscuit Basin, including thick mats, toadstools, ropes, and pinnacles. The differences in color are due to pigments (chlorophylls, bacteriochlorophylls, and carotenoids) produced by phototrophic microorganisms.

Sources/Usage

Public Domain.