“…The Nohi rhyolite, a pyroclastic flow deposit, formed prior to the intrusion and emplacement of the Toki granite (zircon CHIME age 85 AE5 Ma and allanite CHIME age 86 AE7 Ma; Suzuki, Nakazaki, & Adachi, 1998). The Miocene Mizunami Group, which has an age of 20-18 Ma (Sasao, Iwano, & Danhara, 2006), is composed of fluvial, lacustrine, and neritic sediments (Itoigawa, 1974(Itoigawa, , 1980. The Toki granite is unconformably overlain by the Mizunami Group (Itoigawa, 1974(Itoigawa, , 1980.…”