Stratigraphy Practice

What rock layer is the oldest ?

• a
• b
• c
• d

What is the law of superposition?

• a precise plan to teleport  
• a method to find where you are
• a principle used to determine relative age of rocks 

Superposition means that in an undisturbed sequence of sedimentary rocks, which of the following is true?

• The oldest rocks are on top.
• The youngest rocks are in the middle.
• The youngest rocks are on the top.
• There is no way to know which layers are older.

Which layer is the youngest?

• A
• B
• C
• E

Which rock layer is the oldest?

• A
• B
• C
• E

The best index fossils have which two traits?

• widespread geographically, long lifespan
• widespread geographically, short lifespan
• specific place, long lifespan
• specific place, short lifespan

The age of a rock layer compared to the other rock layers around it is called

• Absolute Age
• Relative Age
• Comparative Age
• Layer Age

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

• A, B, C, D, E

• E, A, C, D, B

• E, D, C, B, A

• E, C, B, D, A

Letter "F" is a....

• inclusion
• intrusion
• fault
• unconformity 

Geologists use radioactive dating to determine THE ABSOLUTE AGE OF ROCKS.

• True
• False