At the top of the world, there is a sea—the remains of one, at least. The summit rocks of Mount Everest, the highest ...

Map of the geochronological provinces of the Amazon Craton and ... The occurrence of zircon populations of Rhyacian ages and subordinate Siderian to Archean ages attests that it was a continental ...

Tajika and his team used a numerical model to simulate key aspects of biological, geological and chemical changes during the late Archean eon (3.0–2.5 billion years ago) of Earth's geologic history.

The Archean Eon (4–2.5 million years ago) is the second of Earth’s four major geologic eons, a time when the planet was mostly covered by oceans extending far deeper than those found today.

Tajika and his team used a numerical model to simulate key aspects of biological, geological and chemical changes during the late Archean eon (3.0-2.5 billion years ago) of Earth’s geologic history.

Tajika and his team used a numerical model to simulate key aspects of biological, geological and chemical changes during the late Archean eon (3.0-2.5 billion years ago) of Earth’s geologic history.

Focusing on the late Archean eon (3 billion years to 2.5 billion years ago), Professor Eiichi Tajika and his team simulated crucial aspects of Earth’s biological, chemical, and geological history.

The test cases were a pre-industrial Earth with plenty of water and photosynthetic plants, an early Archean Earth where life had begun to flourish, a pre-biotic Earth where no life existed yet but ...