how are stromatolites are related to oxygen'
play Oxygen enters the atmosphere. Stromatolites pump oxygen into the early atmosphere. Dr Iain Stewart explains how stromatolites, one of the earliest forms of life, first released oxygen over three billion years ago when they turned sunlight into energy.Oxygen was initially soaked up by iron in the seas but eventually entered the atmosphere.arly life affected the structure of the planet. Presenter Aubrey Manning and geologist Professor Maarten De Wit investigate iron rich rocks known as banded iron formations, which formed when stromatolites, some of the earliest known life forms on Earth, produced oxygen that combined with iron dissolved in the oceans.