Petrogenesis of the Neoproterozoic bimodal volcanic rocks along the western margin of the Yangtze Block: New constraints from Hf isotopes and Fe/Mn ratios
文献类型：期刊论文
| 作者 | Li, XH; Qi, CS; Liu, Y; Liang, XR; Tu, XL; Xie, LW; Yang, YH |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2005-11-01 |
| 卷号 | 50期号:21页码:2481-2486 |
| 关键词 | Hf Isotope Fe/mn Basalt Rhyolite Yangtze Block Neoproterozoic Mantle Plume |
| ISSN号 | 1001-6538 |
| DOI | 10.1360/982005-287 |
| 文献子类 | Article |
| 英文摘要 | High-precision major element and Hf isotope data are reported for the Neoproterozoic Suxiong volcanic rocks along the western margin of the Yangtze Block. These volcanic rocks have variable epsilon(Hf)(T) values and Fe/Mn ratios. The relatively primitive basalts have high Fe/Mn ratios and high Hf-Nd isotopic compositions, indicating that they were generated by partial melting of garnet clinopyroxene in mantle plume at high pressure. Thus, the Suxiong basalts are genetically related to the proposed Neoproterozoic super-plume. On the contrary, a few differentiated basalts have low Fe/Mn ratios and low Hf-Nd isotopic compositions. They are likely to experience assimilation-fractional crystallization process. The Suxiong rhyolites have consistent Hf and Nd model ages of 1.3-1.4 Ga. They are likely generated by shallow dehydration melting of pre-existing young arc igneous rocks associated with the basaltic underplating/intrusion in a continental rift. |
| WOS关键词 | SOUTH CHINA ; CHEMICAL-SEPARATION ; MELTING EXPERIMENTS ; MANTLE PLUME ; LU-HF ; ND ; GEOCHEMISTRY ; GRANITOIDS ; RODINIA ; BASALTS |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000234865900014 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65068]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li, XH |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Isotope Geochem & Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, XH,Qi, CS,Liu, Y,et al. Petrogenesis of the Neoproterozoic bimodal volcanic rocks along the western margin of the Yangtze Block: New constraints from Hf isotopes and Fe/Mn ratios[J]. CHINESE SCIENCE BULLETIN,2005,50(21):2481-2486. |
| APA | Li, XH.,Qi, CS.,Liu, Y.,Liang, XR.,Tu, XL.,...&Yang, YH.(2005).Petrogenesis of the Neoproterozoic bimodal volcanic rocks along the western margin of the Yangtze Block: New constraints from Hf isotopes and Fe/Mn ratios.CHINESE SCIENCE BULLETIN,50(21),2481-2486. |
| MLA | Li, XH,et al."Petrogenesis of the Neoproterozoic bimodal volcanic rocks along the western margin of the Yangtze Block: New constraints from Hf isotopes and Fe/Mn ratios".CHINESE SCIENCE BULLETIN 50.21(2005):2481-2486. |
入库方式： OAI收割
来源：地质与地球物理研究所
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