About YANAGISAWA YUKIO
About 産業技術総合研 地質情報研究部門
About HIRANAKA HIRONORI
About KUROKAWA KATSUKI
About WATANABE MAHITO
About 産業技術総合研 地質情報研究部門
About tephrochronology
About Neogene Period
About Sado Island
About stratum
About Pliocene
About Miocene
About 珪藻化石層序
About 中山層
About Sedimentary environments,facies
About 佐渡島
About 中部中新統
About 下部鮮新統
About 珪藻
About 化石層序