Algae in a geothermal pool. Mats of algae (orange,yellow,green) in and around a geothermal pool. Geothermal pools form in areas where volcanic activity causes hot water to rise up from beneath the Earth's surface. The hot water contains large amounts of dissolved minerals,and the heat and minerals can sustain large populations of microscopic plants such as algae,forming the coloured deposits seen here. White deposits usually indicate the deposition of silica or carbonate minerals. Yellow deposits are sulphur. Photographed near Rotorua,on New Zealand's North Island | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Alean, Dr. Juerg |
Bildgröße: | 5583 px × 3775 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |