(a) Data plotted on a lower hemisphere stereonet projection showing the magnetic grain fabric. This projection derives from the AMS ellipsoid (for a comprehensive illustration see Zhang et al. (2010) and Bilardello (2021). K_min is vertical and K_max and K_int axes are randomly distributed within the horizontal plane, which indicates deposition of particles under gravity only. (b) Flinn diagram (Flinn, 1978) of AMS data showing a minimum degree of anisotropy due to the presence of both oblate (disk-shaped) and prolate (rod-shaped) particles. (c) 3D paleogeographic model illustrating the weathering intensity that controls the magnetic mineral proportions between the late Maastrichtian and Eocene. In this study, sea level changes and MS vary independently. Both phyllosilicates and ferromagnetic minerals likely contribute to the MS signal.