About HIRANAKA HIRONORI
About YANAGISAWA YUKIO
About 産業技術総合研 地質情報研究部門
About KUROKAWA KATSUKI
About chemical composition
About volcanic glass
About pyroclastic material
About petrology
About Niigata prefecture
About Miocene Epoch
About late Miocene
About テフラ層
About petrography
About Sedimentary environments,facies
About 新潟
About 中央部
About 後期中新世
About テフラ層
About 対比