Also known as "geological time", this refers to the period covering the physical formation and development of Earth, especially prior to human history.
Adapted from The American Heritage® Dictionary of the English Language, Fourth Edition
More information
Adapted from The American Heritage® Dictionary of the English Language, Fourth Edition
More information
Related categories 1
Sites 3
[ Teens/Mature Teens ]
An interactive tool to calculate time periods and human history in terms of different measurement scales such as a meter, a day or a million years.
[ Teens/Mature Teens ]
Explains how the age of the earth is divided up into periods of time, and provides simple definitions and illustrations of the different names.
[ Kids/Teens/Mature Teens ]
A simple table of the different time periods contains links to details of the rocks, fossils and locations of each one.
[ Teens/Mature Teens ]
Explains how the age of the earth is divided up into periods of time, and provides simple definitions and illustrations of the different names.
[ Kids/Teens/Mature Teens ]
A simple table of the different time periods contains links to details of the rocks, fossils and locations of each one.
[ Teens/Mature Teens ]
An interactive tool to calculate time periods and human history in terms of different measurement scales such as a meter, a day or a million years.
