Geologic Time

Summary  4

Did you know how to find the rock age  is easy .                                                                           Finding  the age of rocks is based on two ideas.

·         Original horizontally this idea explains  that sedimentary rocks forms in the horizontal layers.

·         Superposition in a series of rocks layer the bottom layer is the oldest ,the tpo layer is the youngest                                                                                                                                   Using this two ideas , scientist try to determine the relative age.