14:00 〜 14:15 [SVC36-14] Evolution of magmatic chemistry for the Asama-Maekake volcano since 10ka revealed by whole-rock chemical analysis of pumice obtained by the trenching of air-fall tephra deposits *高橋 正樹1、安井 真也1、金丸 龍夫1 (1.日本大学文理学部地球科学科)