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.

climate has impacted — and been impacted by — life on Earth. This paper will take you as far back in the climate record as is currently possible, to the Archean Eon, from 3.9 to 2.5 billion ...

The ancient remnants from Earth's mantle were a lot less oxidized than samples from the modern mantle. That means something must have changed between now and the Archean Eon, which was over 2.5 ...

Led by Curtin University geologists Chris Kirkland and Tim Johnson, a research team unearthed this primeval crater beneath rock layers in the East Pilbara Terrane of Western Australia. The oldest ...

The Hadean eon represents the time from which Earth first formed. The subsequent Archean eon (approximately 3,500 million years ago) is known as the age of bacteria and archaea. The Proterozoic ...

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.

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.