p. 164 and fig. 8.9 (Evolution of greenstone belts) on p. 157: this is what you need to know about Archean processes. p. 164-168: Most of what you need to know about Proterozoic rocks is here. What ...

The ancestors of major bacterial phyla are placed in the Archean and Proterozoic eras (2.5–1.8 billion years ago), while many families date back to 0.6–0.75 billion years ago, overlapping with ...

Announcing a new publication for Geosystems and Geoenvironment journal. Geosystems and Geoenvironment is a quarterly international interdisciplinary journal in English that publishes high quality ...

The Precambrian is usually considered to have three eons: the Hadean, the Archean and the Proterozoic. Some scientists recognize a fourth eon, which they call the Chaotian, which predates the ...

Though there were undoubtedly mass extinctions in the Archean and Proterozoic, it is only during the Phanerozoic Eon that the biological invention of bones and shells has provided a sufficient ...

A collective understanding of five different data sets show that, all the way back to the Proterozoic era, Earth was never hotter than 140°F. The team believes ocean temperatures have remained ...