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Sketch of the outcrop at Sekinehama, Mutsu City, Aomori Prefecture, Japan, photographs showing the occurrence and shape of drift pumice clasts, and major element composition of volcanic glass shards

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posted on 2023-04-19, 00:07 authored by Reona Hiramine, Kaori Aoki, Daisuke Ishimura

Appendix S1 Sketch of the outcrop


Appendix S2 Closeup photograph of drift pumice of the U-2 and To-Cu tephras, and ash-fall deposit of the To-Cu tephra


Appendix S3 Major element composition of volcanic glass shards

ave.: mean (wt%). std.: standard deviation. *: total iron oxide as FeO. **: raw data before recalculations to 100 % on a water-free basis. Determined by JSM-6930 and EDAX GENESIS APEX2 Energy Dispersive X-Ray Spectrometer using 0.6 nA current at 15 kV, beam diameter is 10 μm, and live time is 200 seconds.


Appendix S4 Photographs of SKN-2, SKN-3, To-Cu, and U-2  (a) pumice clasts of U-2 sampled on Ulleungdo (Machida Hiroshi collection in Sagamihara City Museum, No. MW0048), (b) pumice clasts of SKN-2, (c) pumice clasts of To-Cu sampled near Towada volcano (collected at Tashirotai, Aomori Pref., 10 km southeast from the source), (d) pumice clasts of SKN-3. The size of the squares of (b) and (d) are 1 cm.



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Corresponding author email address

hiramine-reona@ed.tmu.ac.jp

Title (in Japanese)

青森県むつ市関根浜の露頭のスケッチ,漂着軽石の産状と形状を示す写真および火山ガラスの主成分化学組成分析値

Description (in Japanese)

電子付録S1 露頭のスケッチ 電子付録S2 U-2とTo-Cuの漂着軽石とTo-Cu降下火山灰のクローズアップ写真 電子付録S3 SKN-2,SKN-3,To-Cu,U-2の軽石写真 (a) 鬱陵島で採取されたU-2の軽石(相模原市立博物館所蔵町田洋コレクション,No.MW0048),(b) SKN-2の軽石,(c) 給源付近のTo-Cuの軽石(給源から10 km南東の青森県田代平で採取),(d) SKN-3の軽石 (b)と(d)のマス目は1 cmである. 電子付録S4 火山ガラスの主成分化学組成 ave.:平均値.std.:標準偏差.*:Feは全てFeOとして計算されている. **:水を除く前の測定値の合計である.分析条件は加速電圧15 kV,試料電流0.6 nA,ビーム径10 μm,照射時間200秒で,JSM-6930とEDAX GENESIS APEX2 Energy Dispersive X-Ray Spectrometerを用いて測定した.

Manuscript title (in Japanese)

青森県むつ市関根浜における完新世の漂着軽石とその給源火山

Authors (in Japanese)

平峰玲緒奈・青木かおり・石村大輔

Copyright

© 2023 Japan Association for Quaternary Research

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