Summary
An introductory overview of the four fundamental laws of stratigraphy used to determine the relative age of rock layers.
Highlights
The Four Laws
00:00:18
Explanation of the four laws: Superposition (oldest at the bottom), Original Horizontality (layers deposit flat), Lateral Continuity (layers extend in all directions), and Cross-Cutting Relations (intrusions are younger than the layers they cut).
Practical Application
00:01:08
A brief exercise challenging the viewer to label rock units from oldest to youngest to test their understanding of the laws.
Introduction to Stratigraphy
00:00:00
An introduction to the complexity of geologic formations and the methods used to identify the relative age of rock units.