Bulk chemical composition of the Hotokegaura Green Tuff , Hukuura Dacite and Maruyama Rhyolite in western Shimokita Peninsula, Aomori Prefecture

Bulk chemical compositions of the obsidian (OB) from the Hinokigawa Formation (Hinokigawa basin), the pumice of the Hotokegaura Tuff (HT), and the rhyolites of the Fukuura Rhyolite Lava (FR) and Maruyama Rhyolite Lava (MR). Determined by XRF (Philips PW2400) set in Hirosaki University and LA-ICP-MS (NWR-213+Agilent 7700x) set in Nagoya University. The detail methods were described in Tani et al. (2002) and Orihashi and Hirata (2003), respectively. n.d. = not detected