A preliminary study on the distribution, magma series and petrogenesis of the Triassic igneous rocks in middle-southern Korean Peninsula
文献类型：期刊论文
| 作者 | Peng Peng1,2; Yang ShuYan1,2; Wang XinPing1,2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2016 |
| 卷号 | 32期号:10页码:3083-3097 |
| 关键词 | North China block South China block Korean Peninsula Triassic Syenite Monzonite |
| 文献子类 | Article |
| 英文摘要 | There are many Triassic plutons in Korean Peninsula, mainly in the middle-southern, which constitutes a NE-trending corridor zone. Based on lithology, this corridor can be divided into two subzones along the Hongseong-Koseong line, the north subzone (syenite zone/alkaline rocks zone) covers the southern part of the Rangnim massif and the northern part of the Kimggi (Gyeonggi) massif and is composed of alkaline series, mainly syenites; while the southern sub-zone (monzonite zone) lies in the southern part of Kimggi massif and the Yongnam massif and is composed of subalkaline series, mainly monzonites, with some diorite to gabbro components, and a few A-type granites to the south. These plutons formed at ca. 230 similar to 220Ma, e.g., a 228.7 +/- 0. 8Ma U-Pb zircon concordia age is obtained for the Kangbuk biotite syenite from the north sub-zone. These Triassic plutons are coeval with the regional high-grade metamorphism and distribute in consistent but slightly bigger areas, which indicates a cogenetic relationship. These plutons are depleted in high field strengthen elements but enriched in light rare earth elements and large ion lithophile elements, a typical feature of continental lithosphere. Compared between the two subzones, the north sub-zone has systematically lower SiO2 and Na2O contents, but higher K2O, Sr, Ba, La, Eu, Y, Cr and rare earth elements and stronger fractionation between the light and heavy rare earth element (represented by higher (La/Yb) (N)). Spatially, the K2O/Na2O and SiO2 values changes oppositely, i.e., the K2O/Na2O increases while the SiO2 decreases from south to north in both sub-zones. However, the variations in K2O + Na2O and Sr/Y change in a similar trend, i.e., they both decrease from south to north in the south sub-zone and from north to south in the north sub zone. We think the boundary of the two sub-zones is close to the suture between the basements of the North and South China blocks, and the rocks were products of a syn-to post-collision process. And subduction of the South China block (southern Korean Peninsula) beneath the North China block (northern Korean Peninsula) can interpret the spatial variations in composition and lithology. |
| WOS关键词 | U-PB AGES ; TECTONIC IMPLICATIONS ; COLLISION BELT ; NORTH-KOREA ; CHINA BLOCKS ; YELLOW SEA ; EAST-ASIA ; EVOLUTION ; CONSTRAINTS ; AREA |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000388277000012 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53235]  |
| 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.Univ Chinese Acad Sci, Sch Earth Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng Peng,Yang ShuYan,Wang XinPing. A preliminary study on the distribution, magma series and petrogenesis of the Triassic igneous rocks in middle-southern Korean Peninsula[J]. ACTA PETROLOGICA SINICA,2016,32(10):3083-3097. |
| APA | Peng Peng,Yang ShuYan,&Wang XinPing.(2016).A preliminary study on the distribution, magma series and petrogenesis of the Triassic igneous rocks in middle-southern Korean Peninsula.ACTA PETROLOGICA SINICA,32(10),3083-3097. |
| MLA | Peng Peng,et al."A preliminary study on the distribution, magma series and petrogenesis of the Triassic igneous rocks in middle-southern Korean Peninsula".ACTA PETROLOGICA SINICA 32.10(2016):3083-3097. |
入库方式： OAI收割
来源：地质与地球物理研究所
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