“…It has been suggested that at least three excursions oc- Table 2), the Laschamp excursion (triangles: Bonhomet and Zähringer, 1969;Roperch et al, 1988;Chauvin et al, 1989;Guillou et al, 2004), the Skalamaelifell excursion (squares: Marshall et al, 1988;Levi et al, 1990), the Amsterdam excursion (inverse triangles: Watkins and Nougier, 1973;Carvallo et al, 2003), and the Ontake excursion (diamonds: Tanaka and Kobayashi, 2003). ND, SU, and WU denote north-down, south-up and west-up, respectively.…”