Smith noticed that the kinds of fossils he found changed through a vertical succession of rock layers, and furthermore, that the same vertical changes in fossils occurred in different places. Fossils used for age dating and correlation of strata from one region to another are called index fossils. Before attempting this excercise locate and draw in any faults that you see. Community College of Baltimore County. However, the rock record is somewhat limited.
Relative Dating of Geologic events
Note that each cross-section tells a story.
Relative Dating Lab Submission.docx - Relative/Radiometric...
Timing the Geologic Record Earth Revealed. List the events A-D in order of their relative age. I agree.