Knowledge Management System Of Qinghai Institute of Salt Lakes,CAS
| Boron isotopic composition of Paleozoic brachiopod and coeval coral calcites in Yunnan-Guizhou Plateau, China | |
Ma YunQi1,2,5 ; Xiao YingKai2; He MaoYong2; Xiao Jun3; Shen Quan4; Jiang ShengXiang1
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| 2011-12-01 | |
| 发表期刊 | SCIENCE CHINA-EARTH SCIENCES
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| 卷号 | 54期号:12页码:1912-1925 |
| 关键词 | Boron Isotope Coral Brachiopod Paleozoic |
| 摘要 | Boron isotope values in Paleozoic brachiopods and corals, collected from the Yunnan-Guizhou Plateau, China, can be used to constrain the boron isotope compositions of past oceans. All brachiopod shells and coral samples were screened for diagenetic recrystallization by cathodoluminescence microscopy, trace element geochemistry of B, Fe, Mn, Sr, and scanning electron microscopy. The boron isotope ratios for brachiopods in Silurian, Devonian, Carboniferous, and Triassic calcites are in the ranges 8.9aEuro degrees aEuro"14.0aEuro degrees, 8.8aEuro degrees aEuro"13.8aEuro degrees, 10.3aEuro degrees aEuro"16.3aEuro degrees, and 6.7aEuro degrees aEuro"12.4aEuro degrees, respectively. The boron isotope ratios of coral calcites in the Silurian, Devonian, and Permian are 9.1aEuro degrees aEuro"12.2aEuro degrees, 6.1%-13.8aEuro degrees, and 9.2aEuro degrees aEuro"16.1aEuro degrees, respectively. The delta (11)B values for both brachiopods and corals are significantly lower than those for modern biogenic carbonates, indicating that the Paleozoic oceans were depleted of delta (11)B by up to 10aEuro degrees. Our results are consistent with previous published studies. The boron isotope compositions of corals and brachiopods show the consistent trends. The low delta (11)B values may be explained by an enhanced riverine flux of boron from the continents. |
| 语种 | 英语 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.isl.ac.cn/handle/363002/1852 |
| 专题 | 青海盐湖研究所知识仓储 中国科学院青海盐湖研究所 支撑部门 |
| 作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 4.Yunnan Geoexplorat & Dev Bur Mineral Resources, Geol Team 1, Qujing 655000, Peoples R China 5.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma YunQi,Xiao YingKai,He MaoYong,et al. Boron isotopic composition of Paleozoic brachiopod and coeval coral calcites in Yunnan-Guizhou Plateau, China[J]. SCIENCE CHINA-EARTH SCIENCES,2011,54(12):1912-1925. |
| APA | Ma YunQi,Xiao YingKai,He MaoYong,Xiao Jun,Shen Quan,&Jiang ShengXiang.(2011).Boron isotopic composition of Paleozoic brachiopod and coeval coral calcites in Yunnan-Guizhou Plateau, China.SCIENCE CHINA-EARTH SCIENCES,54(12),1912-1925. |
| MLA | Ma YunQi,et al."Boron isotopic composition of Paleozoic brachiopod and coeval coral calcites in Yunnan-Guizhou Plateau, China".SCIENCE CHINA-EARTH SCIENCES 54.12(2011):1912-1925. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| 10.1007_s11430-011-4（793KB） | 开放获取 | 使用许可 | 浏览 请求全文 | |||
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