Fossil dating relative
From the results of studies on the origins of the various kinds of rocks (petrology), coupled with studies of rock layering (stratigraphy) and the fossils they contain (paleontology), geologists have associated layers of rocks with sequence of events thought to have occurred over hundreds of millions of years.
For example, it is believed that during a particular episode the land surface was raised in one part of the world to form high plateaus and mountain ranges.
The site also provides fact sheets on the age of the Earth and isochron dating.
This 9-12-grade activity introduces students to age dating with exercises using relative and absolute dating.
The idea of radioactive decay and half lives, a type of absolute dating, is shown through an activity using M&M's candy and graph paper.
Sequencing Time, University of California, Berkeley. This 5-12-grade activity lets students place parts of their own life story into a time line so that they can better understand how geologic time is reconstructed by scientists.
That fossil species may have been dated somewhere else, so you can match them and say that your fossil has a similar age.
Links to various activities and lesson plans concerning relative and absolute dating.
Content information about absolute and relative dating methods used by the U.
With the sinking of the land surface, sediments were deposited on the ocean floor.
Such recurring events as mountain building and sea encroachment and believed to be recorded in rock layers that comprise units of geologic time.