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タイトルOn the thermomagnetic analysis of Matuyama reversed basalt from Gembudo cave, Hyogo Prefecture, Japan
作成者Domen, Haruo
作成者ヨミドウメン, ハルオ
作成者別表記堂面, 春雄
作成者所属山口大学教育学部
内容記述(抄録等)Abstract Since 1927 as Matuyama discovered the natural remanent magnetization of Gembudo basalts towards the oposite direction to the present geomagnetic field (R-NRM), few rock/paleo magnetic studies had been carried out on the basalts in the Gembudo district. The present author has been studying paleo/rock magnetically on the basalt from the vicinity of Gembudo. In this paper, the data on the thermo magnetic (Js-T) analysis thus obtained up to the present time are shown. The Js-T curves presented here showed that the original Curie point of the specimens is rather low, however, the curves are irreversible even in vacuum of 10^<-3> torr. The present author also showed some other examples of Js-T analysis of the Matuyama Reversed basalts come from Japan and Iceland. Gembudo cave is a rocky cave showing well developed columnar joints of basaltic lava. Because of their beauty and marvel, this cave has been appointed one of the national monuments in Japan. Gembudo is situated in the northern Hyogo Prefecture, at about 110 km aparted from the City of Kyoto. And also this cave is the very site of the original spot at where the name ”Gembu-gan” in Japanese as for the English name ”Basalt” has been given to such the kind of rocks after the name ”Gembudo”. In early 1900s, Matuyama (1927) had firstly made his investigations so ingenious that the paleomagnetic study on the basaltic rocks taken from this cave, Gembudo and he found that those rock specimens showed the reversed natural remanent magnetization (R-NRM) . This discovery made finally his name eternal and glorious in the Earth Sciece World as ”Matuyama Reversed Epoch” of the geomagnetic history. In this district, there are a few of such rocky caves near by Gembudo. This time, the thermo
本文言語eng
資料タイプtext
出版者山口大学教育学部
出版者ヨミヤマグチ ダイガク キョウイク ガクブ
NII資料タイプ紀要論文
ISSN0513-1693
NCIDAN00243950
学内刊行物(紀要等)山口大学教育学部研究論叢(第2部)
掲載誌名研究論叢. 自然科学
掲載誌名別表記Bulletin of the Faculty of Education, Yamaguchi University. Natural science
38
2
開始ページ1
終了ページ8
発行日1988-09
著者版/出版社版その他
リポジトリIDC020038000201
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/C020038000201