| U-Pb Zircon Age, Geochemical, and Sr-Nd-Pb Isotopic Constraints on the Age and Origin of Mafic Dykes from Eastern Shandong Province, Eastern China | |
Liu Shen ; Hu Ruizhong; Feng Caixia; Gao Shan; Feng Guangying; Lai Shaocong; Qi Youqiang; Coulson, Ian M.; Yang Yuhong; Yang Chaogui; Tang Liang
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| 2013 | |
| Source Publication | Acta Geologica Sinica |
| Volume | 87Issue:4Pages:1045-1057 |
| Abstract | U-Pb zircon age, geochemical, and Sr-Nd-Pb isotopic data of mafic dykes from eastern Shandong Province, eastern China is reported herein. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U-Pb zircon analyses of two samples from the investigated mafic dykes yield consistent ages ranging from 121.9 Ma +/- 0.47 Ma to 122.9 Ma +/- 0.61 Ma. The mafic dykes are characterized by high (Sr-87/Sr-86)(i) ranging from 0.7087 to 0.7089, low epsilon(Nd)(t) values ranging from -16.9 to -17.8, Pb-206/Pb-204 = 17.15 to 17.17, Pb-207/Pb-204 = 15.45 to 15.47, and Pb-208/Pb-204 = 37.59 to 37.68. Results from the current study suggest that the mafic dykes are derived from partial melting of ancient lithospheric mantle that was variably hybridized by melts derived from foundered lower crustal eclogite. The mafic dykes may have been generated through subsequent insignificant crystal fractionation and very minor crustal contamination during magma ascent. Combined with previous studies, the current findings provide new evidence that the intense lithospheric thinning beneath the eastern Shandong Province of eastern China occurred at approximate to 120 Ma, and that this condition was caused by the removal of the lower lithosphere (mantle and lower crust). |
| Subject Area | 矿床地球化学 |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/5029 |
| Collection | 矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文 矿床地球化学国家重点实验室 |
| Recommended Citation GB/T 7714 | Liu Shen,Hu Ruizhong,Feng Caixia,et al. U-Pb Zircon Age, Geochemical, and Sr-Nd-Pb Isotopic Constraints on the Age and Origin of Mafic Dykes from Eastern Shandong Province, Eastern China[J]. Acta Geologica Sinica,2013,87(4):1045-1057. |
| APA | Liu Shen.,Hu Ruizhong.,Feng Caixia.,Gao Shan.,Feng Guangying.,...&Tang Liang.(2013).U-Pb Zircon Age, Geochemical, and Sr-Nd-Pb Isotopic Constraints on the Age and Origin of Mafic Dykes from Eastern Shandong Province, Eastern China.Acta Geologica Sinica,87(4),1045-1057. |
| MLA | Liu Shen,et al."U-Pb Zircon Age, Geochemical, and Sr-Nd-Pb Isotopic Constraints on the Age and Origin of Mafic Dykes from Eastern Shandong Province, Eastern China".Acta Geologica Sinica 87.4(2013):1045-1057. |
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