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Broadly defined, geobiology is an interdisciplinary field of scientific research that explores interactions between the biosphere and the lithosphere and/or the atmosphere.〔 〕 == Major geobiological events== Perhaps the most profound geobiological event is the introduction of oxygen into the atmosphere by photosynthetic bacteria. This oxygenation of Earth's primoidial atmosphere (the so-called oxygen catastrophe) resulted in the precipitation of banded-iron rock formations. A subsequent major change was the establishment of terrestrial plant life, which affected continental erosion and changed the types of rivers observed, allowing channelization of what were previously predominantly braided rivers. More subtle geobiological events include the role of termites in overturning sediments, coral reefs in depositing calcium carbonate and breaking waves, sponges in absorbing dissolved marine silica, the role of dinosaurs in breaching river levees and promoting flooding, and the role of large mammal dung in distributing nutrients. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Geobiology」の詳細全文を読む スポンサード リンク
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