To help students understand the development of the geologic time scale.
Also, to introduce students to the major time periods in earth's history, as well as to the role fossils play in helping us understand this history.
[Note: "mya" means "millions of years ago"] Ways to begin your exploration: * Dates from the International Commission on Stratigraphy's International Stratigraphic Chart, 2009; colors adopted from the Commission for the Geological Map of the World, 5/26/2011. Collins created this page, 11/26/94; Robert Guralnick and Brian R.
Current understanding of the history of life is probably close to the truth because it is based on repeated and careful testing and consideration of data.
The rejection of the validity of fossils and of dating by religious fundamentalists creates a problem for them: Fossil sequences were recognized and established in their broad outlines long before Charles Darwin had even thought of evolution.
Unlike people, you can’t really guess the age of a rock from looking at it.
Yet, you’ve heard the news: Earth is 4.6 billion years old. That corn cob found in an ancient Native American fire pit is 1,000 years old. Geologic age dating—assigning an age to materials—is an entire discipline of its own.
Online exhibits Geologic time scale Take a journey back through the history of the Earth jump to a specific time period using the time scale below and examine ancient life, climates, and geography.