日本岩石鉱物鉱床学会
にっぽんがんじきこうぶつこうしょうがっかい
Japanese Association of Mineralogists, Petrologists and Economic Geologists
岩床 is read as がんしょう (ganshou) and means bedrock.
がんしょう
ganshou
にっぽんがんじきこうぶつこうしょうがっかい
Japanese Association of Mineralogists, Petrologists and Economic Geologists