By using seismographs and scales
Radiometric dating and association of fossils with time scales during the periods when life existed.
Typically it is a Geologist.
A geologist.
geologist
Temporal Lobes
A geologist has been called in to identify these rocks. I want to be a geologist.
A geologist could tell you what kind of rock that is. I am studying to become a geologist.
A Geologist.
The cast of The Geologist - 2012 includes: Richard Elfman as The Geologist
A geologist is a person who studies rocks and earth.
geologist studies rock minerals and land forms