Abstract
The study of the ancient magnetic field of the earth, as it is recorded in sedimentary and igneous rocks, has had a significant impact on the science of geology. This magnetic information is one of the most important pieces of evidence for the theory of plate tectonics. In addition, a magnetic time scale has been established that is used extensively in geological studies. Both of these areas should be the topic of serious study by creationists since they have serious implications concerning the history of the earth. This paper introduces the basics of magnetism, the magnetic field of the earth and how the rocks can record the ancient magnetic field of the earth.