We will provide a list of web sites with relevant information. The geologic time scale is divided into eons, eras, periods, epochs, and ages. Our activities, and the time scale for download above, ...

However, his contributions to geology should not be overlooked. 12 February marks the 200th anniversary of the birth of Charles Darwin. As the world prepares to celebrate Darwin Day and the 150th ...

Geology is an applied science that focuses on ... "So the Earth has gone through a number of phases or eras to get to its present state, and we cannot run an experiment in a laboratory that ...