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タイトルヨミ
サングンタイ チュウゴク チホウ チュウブ ニ イチ スル タリ ミサカ チョウマフィックガンタイ シュウヘン ノ サイセツセイ クロムスピネル ノ カガク ソセイ
日本語以外のタイトル
Chemical Characteristics of Detrital Chromian Spinel in and around Tari-Misaka Ultramafic Complex of the Sangun Zone, Central Chugoku District Southwest Japan
ファイル
言語
日本語
属性
自然科学
著者
梅田 知幸
内容記述(抄録等)
There are many ultramafic complexes some of which have chromitite bodies in the Sangun zone in central Chugoku district, Southwest Japan. Almost all complexes are composed of harzburgite, and sometimes found dunite portion and has small amounts of chromitite in it (e.g. MITI,1993,1994; Matsumoto et al., 1995a). Especially, there are largest chromite mines which are Wakamatsu and Hirose in Northern Tari-Misaka. Exploration for podiform chromitite has been difficult, because its occurrence is usually very irregular in ultramafic complex. Matsumoto and Arai (1997) proposed that the petrological exploration for Podiform chromitite by using of spinel chemistry and morphology. This study is good method for exploration of Podiform chromitite in this area. However, in order for a precision to improve chromite exploration, we should increase the number of sample analysis and accurate quantitative study is required. In this study, we use detrital chromian spinel from river sediment in and around the Tari-Misaka ultramafic complex, Sangun zone, Southwest Japan. That is, it is expected that we can increase analysis point greatly by using detrital spinel from the river sediment than that of from the rock specimen. Many spinel(s) from the chromitite origin were recognized by this study in the river near the chromite mines of northern part of Tari-Misaka complex. This result concordant with chromitite formation model (e.g. Arai and Yurimoto, 1994; Zhou et al., 1994; Matsumoto and Arai, 1997). It became clear in particular that detrital spinel is effective as the method for evaluation of chromitite potentiality in this area.
掲載誌名
島根大学教育学部紀要
46
開始ページ
143
終了ページ
155
ISSN
18808581
発行日
2012-12-25
NCID
AA12171265
DOI(SelfDOI)
出版者
島根大学教育学部
出版者別表記
Faculty of Education Shimane University
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
部局
教育学部
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