Clay loaded with iron oxides and dried out, Rio Tinto, Andalusia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.
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Image id: 860-288801
Release status: No Release Needed
Shot date: May 2017
Upload date: June 2021
Artist: Jean-Philippe Delobelle
Release status: No Release Needed
Shot date: May 2017
Upload date: June 2021
Artist: Jean-Philippe Delobelle
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