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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
サンゴ骨格の微小領域における化学組成の不均質性 : 石灰化プロセスの解明とサンゴ古水温計への応用 (<特集>サンゴ年輪と低緯度の海洋環境)
| Title: | サンゴ骨格の微小領域における化学組成の不均質性 : 石灰化プロセスの解明とサンゴ古水温計への応用 (<特集>サンゴ年輪と低緯度の海洋環境) |
| Other Titles: | Heterogeneity of chemical compositions in coral skeletons : Investigation of skeletal calcification and implications for coral thermometer (<Special Section>Coral annual bands and ocean environments in the low latitude) |
| Authors: | 渡邊, 剛1 Browse this author →KAKEN DB | | Juillet-Leclerc, Anne2 Browse this author | | Cuif, Jean-Pierre3 Browse this author | | Meibom, Anders4 Browse this author | | Dauphin, Yannicke5 Browse this author | | Blamart, Dominique6 Browse this author | | 佐野, 有司7 Browse this author |
| Authors(alt): | WATANABE, Tsuyoshi1 | | Juillet-Leclerc, Anne2 | | Guif, Jean Pierre3 | | Meibom, Anders4 | | Dauphin, Yannicke5 | | Blamart, Dominique6 | | SANO, Yuji7 |
| Keywords: | Coral skeletons | | oxygen isotope | | Strontium/calcium ratio | | centres of calcification | | fibers | | secondary Ion Mass Spectrometry (SIMS) | | palaeothermometer |
| Issue Date: | 27-Dec-2004 |
| Publisher: | 日本地球化学会 |
| Journal Title: | 地球化学 |
| Volume: | 38 |
| Issue: | 4 |
| Start Page: | 255 |
| End Page: | 264 |
| Abstract: | Massive corals have been widely used as proxies for past changes in sea surface temperature (SST) of the tropical and subtropical oceans because the oxygen isotopic (δ^<18>O) and strontium/calcium (Sr/Ca) ratios of their aragonitic skeletons are believed to vary quantitatively as a function of the temperature of the ambient sea water. However, recent microanalytical studies using secondary ion mass spectrometry (SIMS) have revealed large chemical heterogeneities for Sr/Ca and oxygen isotopic ratios in coral skeleton, which cannot be explained by temperature variation. The newly developed NanoSIMS has a potential to determine chemical variations within the two basic building blocks of the coral skeleton; centres of calcification and fibers. Such data can provide important new information about the biomineralization process and help constrain the degree to which temperature and/or biological processes affect the composition of skeleton in corals, as well as in biogenetic carbonates formed by other marine organisms. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/56464 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 渡邊 剛
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