Matrix Corrected SIMS In Situ Oxygen Isotope Analyses of Marine Shell Aragonite for High Resolution Seawater Temperature Reconstructions
文献类型：期刊论文
| 作者 | Medd, Oliver M.1; Otter, Laura M.1; Williams, Ian S.1; Stern, Richard A.1,4; Forster, Michael W.1; Eggins, Stephen M.1; Rodriguez-Sanz, Laura1; Abram, Nerilie J.1; He, Miaohong2; Ellwood, Michael J.1 |
| 刊名 | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 25期号:11页码:20 |
| 关键词 | SIMS proxy archives biominerals aquaculture stable isotopes paleoclimatology |
| DOI | 10.1029/2024GC011577 |
| 英文摘要 | Marine shells incorporate oxygen isotope signatures during growth, creating valuable records of seawater temperature and marine oxygen isotopic compositions. Secondary ion mass spectrometry (SIMS) measures these compositions in situ at finer length-scales than traditional stable isotope analyses. However, determining oxygen isotope ratios in aragonite, the most common shell mineral, is hampered by a lack of ideal reference materials, limiting the accuracy of SIMS-based seawater temperature reconstructions. Here, we tested the capability of SIMS to produce seawater temperature reconstructions despite the matrix calibration challenges associated with aragonite. We cultured Anadara trapezia bivalves at four controlled seawater temperatures (13-28 degrees C) and used strontium labeling to mark the start of the temperature-controlled shell increment, allowing for more spatially precise SIMS analysis. An improved matrix calibration was developed to ensure more accurate bio-aragonite analyses that addressed matrix differences between the pure abiotic reference materials and the bio-aragonite samples with intricate mineral-organic architectures and distinct minor and trace element compositions. We regressed SIMS-IRMS biases of abiotic and biogenic aragonites that account for their systematic differences in major, minor, and trace elements, allowing for more accurate SIMS analyses of the temperature-controlled shell increment. The thorough matrix calibration allowed us to provide a SIMS-based seawater-corrected oxygen isotope thermometer of T(degrees C) = 23.05 +/- 0.36 - 4.48 |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001368075500001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81938]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Otter, Laura M. |
| 作者单位 | 1.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China 3.Univ Bremen, MARUM Ctr Marine Environm Sci, Bremen, Germany 4.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB, Canada |
| 推荐引用方式 GB/T 7714 | Medd, Oliver M.,Otter, Laura M.,Williams, Ian S.,et al. Matrix Corrected SIMS In Situ Oxygen Isotope Analyses of Marine Shell Aragonite for High Resolution Seawater Temperature Reconstructions[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2024,25(11):20. |
| APA | Medd, Oliver M..,Otter, Laura M..,Williams, Ian S..,Stern, Richard A..,Forster, Michael W..,...&Knowles, Brett M..(2024).Matrix Corrected SIMS In Situ Oxygen Isotope Analyses of Marine Shell Aragonite for High Resolution Seawater Temperature Reconstructions.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,25(11),20. |
| MLA | Medd, Oliver M.,et al."Matrix Corrected SIMS In Situ Oxygen Isotope Analyses of Marine Shell Aragonite for High Resolution Seawater Temperature Reconstructions".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 25.11(2024):20. |
入库方式： OAI收割
来源：广州地球化学研究所
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