This publication was developed as a guide to be used in conjunction with the Geoscience Australia TimeWalk but can also be
used as a standalone guide on geological time. Each section in this publication discusses a single geological time interval,
and outlines the major geological, climatic and biological events which occurred in that interval. Geological events include
continental drift, the break-up and amalgamation of continental landmasses, mountain-building and major volcanic eruptions.
Climatic events include changes in the content of the atmosphere and the occurrence of ice ages. Biological events include
the evolution of major groups of organisms, the invasion of the land and major extinctions. Other events include changes in
sea levels as well as major meteorite impacts. Each section also shows where rocks of a specific age are found in Australia
and lists some of the continent's major mineral and energy resources formed during a particular time interval.