“…For K‐Ar dates of illite from the Akaishi Tectonic Line, the circles are shaded in grey. The references cited are *1 (Okada, ), *2 (Takagi et al, ), *3 (Takeshita, ), *4 (Yamakita et al, ), *5 (Takagi & Shibata, modified after Shibata & Takagi, , Shibata & Uchiumi, , Shibata & Takagi, ; Shibata et al, , and Takagi et al, , ), *6 (Miyata et al, ), *7 (Miyata, ), *8 (Tanaka et al, ), *9 (Tanaka & Hara, ), *10 (Hara et al, , ), *11(Tanaka et al, ), *12 (Takagi et al, ), *13 (e.g., Takeshita et al, ), *14 (Narita et al, ), *15 (e.g., Noda & Sato, ; Seike et al, ), *16 (Ichikawa, ), *17 (e.g., Otofuji & Matsuda, ), *18 (e.g., Itaya & Takasugi, ), *19 (Seton et al, ), the plate velocity and azimuth data were created using GPlates software (www.gplates.org), *20 (Whittaker et al, ), *21 (Famin et al, , the extension period extended to the age of 37 to 31 Ma of Kobe Group (Ozaki et al, ), *22 (Takeshita et al, ).…”