Many minerals and rocks have low susceptibilities and magnetic anisotropies on the order of
the noise level of the measuring instrument. Anisotropy is often not significant in these
samples when using the standard measurement procedure. We propose a method that uses
stacking of data to improve the signal-to-noise ratio, thus extending the dynamic range for
measurement and allowing for assessment of the data quality. The method makes it possible
to obtain consistent directions of the principal axes for samples with an anisotropy on the …