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
Adapted from The American Heritage® Dictionary of the English Language, Fourth Edition
Related categories 1
Sites 5
- Earth Floor: Geologic Time Explains how the age of the earth is divided up into periods of time, and provides simple definitions and illustrations of the different names.
- Comprehending Geological Time 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.
- Geological Time Line A simple chart provides links to further details of each era, and an interactive feature allows users to see global shifts and milestones.
- Fugue No. 16: G Minor Listen to the music piece while reading about how the geology and ecosystems of Grand Canyon, AZ are like a Bach fugue.
- Geologic Time Scale A simple table of the different time periods contains links to details of the rocks, fossils and locations of each one.