<p>Fig. S1 Stratigraphic schemes</p>
<p>Fig. S2 Outcrop map of the study area</p>
<p>Fig. S3 Nonconformity outcrops</p>
<p>Fig. S4 Outcrops the Hiwadatoge Formation</p>
<p>Fig. S5 Fossils from the Hiwadatoge Formation</p>
<p>Fig. S6 QFL and QmFLt plots for sandstones</p>
<p>Fig. S7 Box plots for sandstone roundness parameters</p>
<p>Fig. S8 Outcrops of the Kuma Group</p>
<p>Fig. S9 Photographs of the Ishizuchi Group</p>
<p>Fig. S10 Images of zircons</p>
<p> </p>
<p>Table S1 Modal compositions of sandstones </p>
<p>Table S2 Analytical data and ages</p>