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Title Transcription
シマネケン カンバラ ダイ2 イセキ ノ サンベ カザン タイヘイザン カサイリュウ タイセキブツ ノ テイチ オンド ミツモリ : ジョウモンジン ワ ヒガイ オ ウケタカ
Title Alternative
Estimation of emplacement temperature of Taiheizan pyrodastic flow deposits from Holocene Sanbe Volcano,Southwest Japan : Were Jomon people affected by pyroclastic flows?
File
language
jpn
Author
Sawada, Yoshihiro
Kashine, Chikako
Fukue, Michiko
Hyodo, Masayuki
Description
Many archeological sites including Jomon remains occur along the Kando River,Shimane Prefecture.Some Jomon remains are directly covered by Taiheizan pyroclastic flow deposits which originated from the Holocene Sanbe Volcano nearby.Carbonized woods from the pyroclastic flow deposits have previously been dated by ^<14>_C method at 3530±100 and 3700±130y.B.P.The pyroclastic flow deposits are block-and-ash flows.They contain many carbonized wood fragments,which may reach a length of 468 cm and a diameter of 30 cm.Flow emplacement temperatures were estimated from paleomagnetic blocking temperatures of clasts and H/C thermometry of carbonized wood fragments.Accidental fragments in the deposits were heated up to 530-560℃,and temperatures estimated from carbonized woods reach 545℃.Although the Taiheizan pyroclastic flow was not large and the archeological sites are about 5.5 km from the conduit,emplacement temperatures are very high.It is inferred that some Jomon people suffered from the pyroclastic flow,because of its power and the strong thermal effect on the surrunding area.Estimation of emplacement temperatures of pyroclastic flow deposits plays an important role in the drawing of volcanic hazard maps.
Journal Title
島根大学地球資源環境学研究報告
Volume
19
Start Page
3
End Page
15
ISSN
13439774
Published Date
2000-12-25
NCID
AA11455176
Publisher
島根大学総合理工学部地球資源環境学教室
Publisher Aalternative
Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Interdisciplinary Graduate School of Science and Engineering
Remark
12-14,16+ / 1993+
徳岡隆夫教授退官記念論誌集
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