The Concise Geologic Time ScaleThis concise handbook presents a summary of Earth's history over the past 4. 5 billion years as well as a brief overview of contemporaneous events on the Moon, Mars, and Venus. The authors have been at the forefront of chronostratigraphic research and initiatives to create an international geologic time scale for many years, and the charts in this book present the most up to date, international standard, as ratified by the International Commission on