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Elemental and Sr isotope profiles of Cretaceous-Tertiary (K-T) boundary layers at Medetli, Gölpazari, northwestern Turkey(松丸国照教授退職記念特集)<数学・自然科学>
https://doi.org/10.24561/00017370
https://doi.org/10.24561/000173703787e83d-e149-4bbb-9e4d-5ecab793f6d9
名前 / ファイル | ライセンス | アクション |
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KY-AA12318206-5601-33.pdf (4.4 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||||||
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公開日 | 2008-07-30 | |||||||||||||||||
タイトル | ||||||||||||||||||
言語 | en | |||||||||||||||||
タイトル | Elemental and Sr isotope profiles of Cretaceous-Tertiary (K-T) boundary layers at Medetli, Gölpazari, northwestern Turkey(松丸国照教授退職記念特集)<数学・自然科学> | |||||||||||||||||
言語 | ||||||||||||||||||
言語 | eng | |||||||||||||||||
資源タイプ | ||||||||||||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||
資源タイプ | departmental bulletin paper | |||||||||||||||||
ID登録 | ||||||||||||||||||
ID登録 | 10.24561/00017370 | |||||||||||||||||
ID登録タイプ | JaLC | |||||||||||||||||
タイトル(別言語) | ||||||||||||||||||
その他のタイトル | トルコ北西部のギョルパザリ地域メデトルの白亜紀 : 第三紀(K-T)の化学元素とストロンチウム同位体分析概要 | |||||||||||||||||
著者 |
荒川, 洋二
× 荒川, 洋二
× 天川, 裕史
× 松丸, 国照
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著者 ローマ字 | ||||||||||||||||||
ARAKAWA, Yoji | ||||||||||||||||||
著者 ローマ字 | ||||||||||||||||||
AMAKAWA, Hiroshi | ||||||||||||||||||
著者 ローマ字 | ||||||||||||||||||
MATSUMARU, Kuniteru | ||||||||||||||||||
著者 所属 | ||||||||||||||||||
Earth Evolution Sciences. Graduate School of Life and Environmental Sciences. University of Tsukuba | ||||||||||||||||||
著者 所属 | ||||||||||||||||||
Ocean Research Institute. University of Tokyo | ||||||||||||||||||
著者 所属 | ||||||||||||||||||
Department of Geology. Faculty of Education. Saitama University | ||||||||||||||||||
書誌情報 |
埼玉大学紀要. 教育学部 en : Journal of Saitama University. Faculty of Education 巻 56, 号 1, p. 373-384, 発行日 2007-03 |
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年月次 | ||||||||||||||||||
2007 | ||||||||||||||||||
出版者名 | ||||||||||||||||||
出版者 | 埼玉大学教育学部 | |||||||||||||||||
出版者名(別言語) | ||||||||||||||||||
出版者 | Faculty of Education, Saitama University | |||||||||||||||||
収録物識別子 | ||||||||||||||||||
収録物識別子タイプ | ISSN | |||||||||||||||||
収録物識別子 | 18815146 | |||||||||||||||||
概要 | ||||||||||||||||||
内容記述タイプ | Other | |||||||||||||||||
内容記述 | Major and trace element concentrations and Sr isotope ratios were determined for the Cretaceous-Tertiary (K-T) transitional layers in Medetli. Gblpazari. northwestern Turkey. Late Maastrichtian gray colored sandstone layer (layer A) is overlain by yellow colored sandstone layer (layer B) with thin goethite-rich layers. Lower Paleocene limestone (layer C) overlies layer B. Fossils are absent in layer B. Major elements such as Ab03. MgO. MnO. NazO and K20 are slightly lower in layer B compared with layer A. Trace elements. such as Ba. Rb and Y. are relatively high in layer A than in layer B. while Sr is clearly rich in layer B. Distinct peaks of Fe. Ni. Co, Cr. As and Sb are found in a goethite-rich layer. The Sr isotope ratios (initial 87Sr /86S r ratios) of samples change from layer A (0.7099-0.7112) to layer B (0.7079-0.7084). This abrupt change of Sr isotoperatios is explained by a drastic increase of precipitation rate of sea water Sr to layer B rather than in layer A. and this change may b related to the K-T event. Association with these results and element concentrations including Ir (Arakawa et aJ .. (2003). the actual K-T boundary is situated probably between the top of layer A and the bottom of layer B. In the Medetli region. The deposition of the top of layer A and probably the layer B are considered to have been formed by the K-T and its successive events. |
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内容記述タイプ | Other | |||||||||||||||||
内容記述 | text | |||||||||||||||||
フォーマット | ||||||||||||||||||
内容記述タイプ | Other | |||||||||||||||||
内容記述 | application/pdf | |||||||||||||||||
作成日 | ||||||||||||||||||
日付 | 2008-07-30 | |||||||||||||||||
日付タイプ | Created | |||||||||||||||||
アイテムID | ||||||||||||||||||
KY-AA12318206-5601-33 |