Degree of magnetic anisotropy as a strain intensity gauge in ferromagnetic granites

Abstract

Anisotropy of magnetic susceptibility data for a ferromagnetic granite (Godhra Granite, NW India) are presented and it is shown that the degree of magnetic anisotropy ( P ′) is not controlled by the mean susceptibility ( K m ). Analyses carried out across a high-strain zone lying between granite and adjacent gneiss show that P ′ values are highest in samples that lie close to the contact and decrease away from it. Based on these results it is concluded that if P ′ is not controlled by K m , then the former can be used to gauge strain-intensity variations in ferromagnetic granites.