Look up: Paleomagnetism

1. Paleomagnetism
   Paleomagnetism is the magnetism that remains in volcanic rock from the time it solidified from magma.
   Found on http://www.enchantedlearning.com/subject
   
   
2. paleomagnetism
   paleomagnetism, study of the intensity and orientation of the earth's magnetic field as preserved in the magnetic orientation of certain minerals found in rocks formed throughout geologic time. Paleomagnetic studies of rocks and ocean sediment have demonstrated that the orientation of the earth's ma...
   Found on http://www.infoplease.com/ce6/sci/A08373
   
   
3. Paleomagnetism
   `Paleomagnetism` is the study of the record of the Earth`s magnetic field in rocks. Certain minerals in rocks lock-in a record of the direction and intensity of the magnetic field when they form. This record provides information on the past behavior of Earth`s magnetic field and the past location of...
   Found on http://en.wikipedia.org/wiki/Paleomagnet