The evolution of Earth’s atmosphere

In the previous post, we established that the different rock types, namely sedimentary, igneous and metamorphic rocks, reveal information about the processes involved in shaping our planet’s exterior environments as well as the interior conditions. Sedimentary rocks, in particular, are a fantastic rock record, known to capture indirect relations between the atmosphere (air) and theContinue reading “The evolution of Earth’s atmosphere”

Introduction

Dioxygen (O2) is a potent little molecule that distinguishes Earth from other planets in the Solar System. The high oxygen content of the air we breathe is considered essential to sustain life as we know it, and yet it was not an original constituent of Earth’s atmosphere. Like other rocky planets in the Solar System,Continue reading “Introduction”