Dating and time scale

The feature labeled "B" is a.......

• fault
• inclusion
• intrusion
• fossil

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

Which rock layer in the diagram seems to be the oldest?

• F
• E
• B
• A

According to the law of superposition, which layer is the youngest?

• A
• B
• C

If an index fossil is found in two rock layers that are separated by an ocean, what do you know about the relationship between the two rock layers?

• they are about the same age
• both areas were dry
• the are made of the same kind of rock
• the rock layers are unrelated

Gaps in rock layers caused by erosion are called.

• law of superposition
• unconformities
• uniformitarianism
• relative dating

When a igneous intrusion is found in a layer, what do we know about its age?

• The intrusion is younger than the rock.
• The intrusion is older than the rock
• The intrusion is the same age as the rock.
• The intrushion was made by ailens.

What things make a good index fossil?

• Good looks and a great smile
• widespread and on Earth of a short time
• widespread and on Earth for a long time
• only found in one location and lived for a long period of time

Which of the following is the oldest?

• Layer L
• Intrusion D
• Intrusion H
• Layer E

Which of the following correctly lists the layers in order from oldest to youngest?

• A, B, C, D, E
• E, B, C, D, A
• E, D, C, B, A
• C, B, A, D, E