3.3. VGPs and Pole Migration
The VGP shows the position of the geomagnetic paleopole (Lanza and Meloni, 2006). The VGP latitudes from this dataset show fluctuations ranging from -64° to -1° before the transition in the Matuyama section, which are similar to the data from Haneda et al. (2020) with fluctuations from -85° to -32° (Fig. 7a and b). These values indicate a 90° change between 7.1 and 12.8 cm depth (5.7 cm thickness) during the transition due to pole migration (Fig. 7a). A 75° change in VGP values at 11.8 cm depth (Fig. 7a) shows the precursor of the reversal according to Valet et al. (2012) (Fig. 7c). In addition, we plotted the VGP path using VGP latitudes and longitudes based on the ChRM directions of our data (Fig. 8). VGP locations for the Matuyama section are in the Southern Hemisphere (Fig. 8). During the transition from reversed to normal polarity, the magnetic pole fluctuates east of Africa in the Southern Hemisphere and then migrates to the area west of North America in the Northern Hemisphere (Fig 8a). The same occurrence of this migration of the paleopole compares well with the M/B transition section from Okada et al. (2017) recorded in marine sediments near Japan (Fig. 8b). After the geomagnetic transition, paleopoles fluctuate around the geographic north pole (Fig. 8a).