Law of Superposition

Mr. Anderson explains the law of superposition, which states that older rock layers are found below younger ones. He uses a locker analogy to illustrate this concept and discusses how it applies to solving geology problems. The video includes a drawing demonstration to visualize rock layers and geological events like faults, tilting, erosion, and intrusions. Finally, the application of these concepts is shown through a real-world example of a road cut.

What does the law of superposition state about the age of rock layers?

• Rocks age randomly.

• All rocks are the same age.

• Older rocks are found at the bottom.

• Older rocks are found at the top.

In the locker analogy, what item would you expect to find at the bottom?

• A recently used notebook

• A biology book

• A geologic key

• A blank sheet of paper

How can the law of superposition help in solving geology problems?

• By identifying the color of rocks

• By determining the order of rock layers

• By measuring the weight of rocks

• By predicting future geological events

What geological event involves the breaking and lifting of rock layers?

• Intrusion

• Erosion

• Lava flow

• Fault

What is an intrusion in geological terms?

• A fault in the rock

• A type of erosion

• Molten rock moving into other rock layers

• A horizontal rock layer

What is an unconformity in geology?

• An area where erosion has occurred

• A horizontal rock layer

• A new rock layer

• A type of fault

How can road cuts help in understanding geological layers?

• By hiding the rock layers

• By exposing the rock layers

• By creating new rock layers

• By tilting the rock layers