Stromatolites on Early Earth

Bildnummer 13479957
Stromatolites on Early Earth
Archaean Earth. Illustration of the Earth as it may have been in the Archaean eon (3.8 to 2.5 billion years ago) in its early history. At this time there was considerably more volcanic activity on Earth, its crust was beginning to cool and its heat flow was far greater. The composition of both the atmosphere and oceans were very different. The columnar formations in the sea are stromatolites. These formed from the precipitation of calcium carbonate by cyanobacteria. The oldest fossil stromatolites date to the early Archaean.
Lizenzart: Lizenzfrei
Credit: Science Photo Library / Garlick, Mark
Modell-Rechte: nicht erforderlich
Restrictions: -

Preise für dieses Bild ab 29 €

Für digitale Nutzung (72 dpi) ab 29 €
Für Druckauflösung (300 dpi) ab 300 €

Keywords

;