Study on the petrographic and SIMS zircon U-Pb geochronological characteristics of the magmatic rocks associated with the Jongju and Cholsan REE deposits in northern Korean Peninsula

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Study on the petrographic and SIMS zircon U-Pb geochronological characteristics of the magmatic rocks associated with the Jongju and Cholsan REE deposits in northern Korean Peninsula
	Kim JongNam 1; Han RyongYon 1; Zhao Lei 2; Li QiuLi 2; Kim SokSan 1
刊名	ACTA PETROLOGICA SINICA
	2016
卷号	32 期号:10 页码:3123-3138
关键词	Northern Korea Rangrim terrane Alkaline rocks Porphyraceous granite REE deposit
文献子类	Article
英文摘要	Rangrim massif in the northern part of the Korean Peninsula is an importance constituent part of the Sino-Korea Craton. Its Early Precambrian rock associations, metamorphic and deformation characteristics are similar to those of the Liaonan terrane and the Liaoji Belt in North China Craton. Some REE deposits are distributed in the Jongju and Cholsan regions and they are closely related to alkaline rocks and porphyraceous granites outcropped in these regions. Coarse-grained syenite, fluoritized aegirine-augite syenite and porphyraceous granite samples were collected from these regions. Petrographic observation results show that the rocks don't show obvious alteration related to later hydrothermal fluids except those derived from the same episode of magmatism of the rocks. SIMS zircon dating results give magmatic ages for the weathered (coarse-grained) syenite of 1865 +/- 6 Ma, for the fluoritized aegirine-augite syenite of 1868 +/- 8 Ma and for the four porphyraceous granite samples of 1871 +/- 13 Ma, 1866 +/- 8 Ma, 1872 +/- 6 Ma and 1873 +/- 7 Ma, respectively. Synchronous magmatism and high grade metamorphism are widely distributed along the three Paleoproterozoic mobile belts in the North China Craton and similar alkaline rocks have also been reported from the Liaonan terrane. These lines of evidence suggest that the Liaonan terrane, the Liaoji mobile belt and the Rangrim terrane probably represent different parts of a single huge tectonic belt during Paleoproterozoic and this tectonic belt (or part of this belt) is in an extensional environment. After a thorough synthesis of the results from field and petrographic observations and zircon U-Pb dating, and based on a simple comparison, it can be seen that the REE deposits in the Jongju and Cholsan regions are different from the world class Bayan Obo REE deposit in many different ways, like the rock assemblage, the REE minerals, the alteration features of rocks and the time of REE metallogenesis. More work will be needed s in order to fully understand the REE mineral assemblages and the metallogenesis of these deposits.
WOS关键词	NB-FE DEPOSIT ; OGCHEON METAMORPHIC BELT ; RARE-EARTH-ELEMENTS ; CHINA CRATON ; INNER-MONGOLIA ; SOUTH-KOREA ; TECTONIC IMPLICATIONS ; CRUSTAL EVOLUTION ; CARBONATITE DYKE ; FLUID INCLUSIONS
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000388277000014
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53253]
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.State Acad Sci, Inst Geol, Pyongyang 3812100, Dem Rep Korea 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Kim JongNam,Han RyongYon,Zhao Lei,et al. Study on the petrographic and SIMS zircon U-Pb geochronological characteristics of the magmatic rocks associated with the Jongju and Cholsan REE deposits in northern Korean Peninsula[J]. ACTA PETROLOGICA SINICA,2016,32(10):3123-3138.
APA	Kim JongNam,Han RyongYon,Zhao Lei,Li QiuLi,&Kim SokSan.(2016).Study on the petrographic and SIMS zircon U-Pb geochronological characteristics of the magmatic rocks associated with the Jongju and Cholsan REE deposits in northern Korean Peninsula.ACTA PETROLOGICA SINICA,32(10),3123-3138.
MLA	Kim JongNam,et al."Study on the petrographic and SIMS zircon U-Pb geochronological characteristics of the magmatic rocks associated with the Jongju and Cholsan REE deposits in northern Korean Peninsula".ACTA PETROLOGICA SINICA 32.10(2016):3123-3138.