Paleomagnetism is the study of the __record of earth's__ magnetism in rocks. When magma cools, the magnetic iron-bearing minerals align themselves with the Earth's magnetic field and record__the direction__ and ___intensity__.
Paleomagnetism is branch of geophysics which studies the record of earth's history of magnetism over its history.
Iron bearing minerals such as haematite that accompanies magma formation can be magnetized as they cool to form igneous rocks. This magnetization would record the current direction of the magnetic field and its intensity. When the magma finally cools and solidifies, the record is arrested and preserved in the rock.
