Paleoproterozoic high temperature metamorphism and anatexis in the northwestern Korean Peninsula: Constraints from petrology and zircon U-Pb geochronology
文献类型：期刊论文
| 作者 | Zhao Lei1; Zhang YanBin1; Wu FuYuan1; Li QiuLi1; Yang, JongHyok2; Kim, JongNam2; Choi, WonJong2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2016 |
| 卷号 | 32期号:10页码:3045-3069 |
| 文献子类 | Article |
| 英文摘要 | The Korean Peninsula is juxtaposed by the North China Craton (NCC) to the left and the Japanese island chain to the right. Its position is of both geographical and geological importance and thus the study of its geological evolution and tectonic features will greatly stimulate the thorough understanding and interpretation of northeastern Asia geology. In this paper, we present the study results of rocks sampled from the Nampo and Jungsan groups located in the western Rangrim massif. Field as well as microscopic observations show that the studied samples from both the Nampo and Jungsan groups preserve macroscopic and microscopic evidence of anatexis, like the leucosome patches, melanosome, the thin-film structure between mineral boundaries. Mineral assemblages and reaction textures of the studied samples suggest that these rocks experienced anatexis, under both fluid present (?) and fluid absent conditions and the metamorphic grade is amphibolite to granulite facies. During later cooling and melt crystallization stage, back reaction and/or retrograde metamorphism occurred. Zircon U-Pb age results of the seven studied samples indicate episodic metamorphism and anatexis. Samples of the Nampo Group recorded an episode of metamorphism and fluid absent melting at 1917Ma and another at 1877 similar to 1855Ma. Melt cooling and crystallization probably occurred at 1842Ma. Samples of the Jungsan Group give the time of anatexis (fluid present?) and garnet growth at 1841 similar to 1830Ma and melt cooling and crystallization at 1785Ma. This study shows that the time of the Paleoproterozoic metamorphism and anatexis in the Rangrim massif is broadly similar to those in the NCC (although there might be some difference in the patterns of metamorphism and anatexis) which, in turn, might suggest that the NCC and the Rangrim massif might have evolved into a uniform continent before Paleoproterozoic. |
| WOS关键词 | NORTH CHINA CRATON ; HIGH-PRESSURE GRANULITES ; RAPAKIVI GRANITE BATHOLITH ; LU-HF ISOTOPES ; LIAO-JI BELT ; SOUTH-KOREA ; CRUSTAL EVOLUTION ; TRACE-ELEMENT ; TECTONIC IMPLICATIONS ; GEOLOGICAL IMPLICATIONS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000388277000010 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53248]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.State Acad Sci, Inst Geol, Pyongyang 3812100, North Korea |
| 推荐引用方式 GB/T 7714 | Zhao Lei,Zhang YanBin,Wu FuYuan,et al. Paleoproterozoic high temperature metamorphism and anatexis in the northwestern Korean Peninsula: Constraints from petrology and zircon U-Pb geochronology[J]. ACTA PETROLOGICA SINICA,2016,32(10):3045-3069. |
| APA | Zhao Lei.,Zhang YanBin.,Wu FuYuan.,Li QiuLi.,Yang, JongHyok.,...&Choi, WonJong.(2016).Paleoproterozoic high temperature metamorphism and anatexis in the northwestern Korean Peninsula: Constraints from petrology and zircon U-Pb geochronology.ACTA PETROLOGICA SINICA,32(10),3045-3069. |
| MLA | Zhao Lei,et al."Paleoproterozoic high temperature metamorphism and anatexis in the northwestern Korean Peninsula: Constraints from petrology and zircon U-Pb geochronology".ACTA PETROLOGICA SINICA 32.10(2016):3045-3069. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。