REMANENT MAGNETIZATION OF MINERAL AGGREGATES AND ITS CONNECTIONS WITH THE NATURAL ELECTRICAL FIELD

Abstract

The remanent magnetization of rocks is thought to have been produced by the effect of the Earth's magnetic field on the orientation of mineral grains or of their magnetic moment under isothermal conditions, or under conditions of changing temperatures, or under conditions of a changing mechanical load. Electrical forces are thought to produce magnetization only via magnetic fields generated by lightning discharge. But the author have found very commonly occurring conditions under which the electrical field characteristics, especially the current density, can be much higher and, in epigenetic processes of recrystallization and redistribution of matter, can control the orientation of vectors of remanent magnetization (VRM). Such conditions usually are created in ore zones and around igneous intrusions. Therefore there is reason to consider the VRMs as indicators of the structure of force fields, of the patterns of three-dimensional distribution of matter and of changes in the magnetic properties of rocks away from ore bodies. Thus, the remanent magnetization of rocks is considered to be a potential prospecting criterion. This paper is based on our own data.