Geologic Record Vocab

Front

Earth's history is documented in the...

Back

geologic record

Front

According to uniformitarianism, today's geologic processes are _____ those in history.

Back

the same as

Front

Rock layer younger than another indicates its...

Back

relative age

Front

Radiometric dating provides a rock layer's age.

Back

absolute

Front

Law of ____: younger rock layers on top, older at bottom.

Back

Superposition

Front

Radiometric dating determines a rock's age by measuring...

Back

radioactive material

Front

Index fossils help geologists because they...

Back

lived during a specific time period.

Front

Drilled sections of glaciers reveal past __.

Back

climates

Front

In the law of crosscutting, faults are ___ than the layers they cut through.

Back

younger

Front

A person states they are 14 years old. This indicates their:

Back

absolute age