Geologic Time Quiz

The statement that the oldest layer will be at the bottom in an undisturbed sequence of rock layers is called the Principle of ....

• Inclusions
• Unconformities
• Cross-Cutting Relationships
• Superposition

The Principle of Cross-Cutting Relationships states that an igneous intrusion is 

• always younger than the layers it cuts across

• always older than the layers it cuts across

• the same age as the rock it melted

• none of the answers are correct

A gap in the geologic record is known as a(n)_______________.

• unconformity
• intrusion

Fossils are found in ____________________________ rock

• Igneous

• Metamorphic

• Sedimentary

• Granite

The age of a rock compared to the ages of other rocks is the rock's

• absolute age
• geologic age
• sedimentary age
• relative age

The exact age of a fossil. Example: The fossil is 20,000 years old.

• relative age

• absolute age

• approximate age

• fossil age

Fossils that are ABUNDANT and WIDESPREAD and used in RELATIVE DATING are.....

• cast

• mold

• index

• trace

Which of the following is true about carbon dating?

• Carbon dating can be used to date rocks containing (living or once living) material that is up to about 50,000 years old.

• Carbon dating can be used to date all types of rocks

• Carbon dating is a type of relative dating

• Scientists compare the amount of C-14 that is produced to the original amount

Which layer is OLDER? Intrusion M or Layer D?

• Intrusion M

• Layer D

Which layer is OLDER? Fault E or Intrusion D?

• Fault E

• Intrusion D