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ID 27373
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別タイトル
Carbonates Fills in Fossil Shells from the Underground Quaternary Deposits of Hiroshima City, Southwest Japan
著者
寺岡 明文
北川 隆司
鈴木 盛久
キーワード
Quaternary
shell fossil
Drusyfill
carbonates
第四紀
貝化石
殻内沈殿物
炭酸塩鉱物
NDC
地球科学・地学・地質学
抄録(英)
The underground Quaternary deposits in Hiroshima City yield abundant fossil shells. Among them, Anodontia strearnsiana Oyama and Dosinella pencillata (Reeve) are the representatives, which contain drusy infill carbonates with such various colors as red, yellow and orange. Gray-to dark-colored deposits have filled inner side of the drusy carbonates. The mode of occurrence of the fossils suggests that the shells have been fossilized almost preserving their life position. Based on X-ray diffraction analyses, it is revealed that shells and drusy infills consist mostly of aragonite and calcite, respectively, and that the inner deposits are composed mainly of calcite, illite, feldspar and quartz. X-ray fluorescence analyses have clarified that colored-infill carbonates are richer in MnO and MgO and poorer in CaO and SrO than the shells and that the inner deposits have relatively higher SiO2, Al2O3 and K2O than the shells and infills
掲載誌名
広島大学学校教育学部紀要. 第二部
22巻
開始ページ
21
終了ページ
30
出版年月日
2000-01
出版者
広島大学学校教育学部
ISSN
0387-4869
NCID
言語
日本語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
部局名
教育学研究科
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