Snowball Earth's iron deposits may have formed through microbes living without sunlight
Iron is one of the most abundant metals on Earth's surface, yet how such massive iron ore deposits formed throughout geological history has long remained a mystery. The prevailing theory has been that ancient photosynthetic bacteria oxidized iron, causing it to precipitate and accumulate in the ocea...
Image: Phys.org
Iron is one of the most abundant metals on Earth's surface, yet how such massive iron ore deposits formed throughout geological history has long remained a mystery. The prevailing theory has been that ancient photosynthetic bacteria oxidized iron, causing it to precipitate and accumulate in the oceans.
Originally published at Phys.org
