For fifteen  points, give the term which describes this phenomenon.
The first convincing evidence supporting Wegener's theory was found by  researchers investigating the magnetic history of rocks; since rocks maintain  the magnetic alignment that is present when they are first formed, scientists  can trace the history of where and when rocks were formed. For fifteen  points, give the term which describes this phenomenon.
The first convincing evidence supporting Wegener's theory was found by  researchers investigating the magnetic history of rocks; since rocks maintain  the magnetic alignment that is present when they are first formed, scientists  can trace the history of where and when rocks were formed.
Paleomagnetism