Anisotropy of magnetic susceptibility of heated rocks

摘要: Abstract Heating produces changes, which does not always correspond to simple enhancement of the magnetic fabric. Two methods are proposed determine anisotropy susceptibility ferrimagnetic minerals formed or that have disappeared by chemical change during successive heating. The first diagonalizes tensor from difference between each term before and after second employs linear regression for made with values obtained throughout a thermal treatment. When same fabric is several steps, it cannot be related randomly oriented minerals. Instead, newly must characteristics pre-existing rock. By comparing this initial whole rock fabric, we can distinguish cases where heating simply enhances those treatment induces different Relative pre-heating may an inverse one whose principal axes in direction, petrostructural elements other than defining