About HARAYAMA SATORU
About 信州大 山岳科学総合研
About HARAYAMA SATORU
About SHIRAHASE TERUO
About rhyolite
About Gifu Prefecture
About Cretaceous Period
About rubidium-strontium dating
About potassium-argon dating
About granitic rocks
About igneous activity
About Dating
About Volcanic rocks
About 北アルプス
About 流紋岩
About Rb
About Sr
About 年代
About Ar