SHRIMP U-Pb dating and LA-ICPMS Hf isotope analysis of detrital zircons from medium- to coarse-grained sandstones of the Bayan Obo Group and Sailinhudong Group and its geological significances

	SHRIMP U-Pb dating and LA-ICPMS Hf isotope analysis of detrital zircons from medium- to coarse-grained sandstones of the Bayan Obo Group and Sailinhudong Group and its geological significances
	Ma MingZhu 3; Zhang YuXu 1; Xie HangQiang ; Wan YuSheng
刊名	ACTA PETROLOGICA SINICA
	2014
卷号	30 期号:10 页码:2973-2988
关键词	Bayan Obo Group Sailinhudong Group Detrital zircon SHRIMP dating Hf isotope North China Craton
ISSN号	1000-0569
英文摘要	The Bayan Obo Group, located in the northern margin of the North China Craton, is well-known due to the occurrence of a super-large BEE-Nb-Fe deposit. It is debatable that the Bayan Obo Group formed in Mesoproterozoic or Paleozoic. The Sailinhudong Group occurs in the south of the Bayan Obo Group, with different opinions on both being same or not in formation age. This paper reports SHRIMP U-Pb ages and LA-ICPMS Hf isotopes of detrital zircons from medium- to coarse-grained sandstones of the Bayan Obo Group and Sailinhudong Group in the northern margin of the North China Craton. Detrital zircons from the lower parts of the two groups are similar in shape and external and internal textures, and can be divided into four types, namely trapped or inherited, magmatic, metamorphic and incompletely recrystallized zircons. The different types of detrital zircons from the two groups have similar age distributions, mainly ranging from 1. 8Ga to 2. 1Ga and 2. 4Ga to 2. 7Ga, respectively, but with slightly different age peaks. The detrital zircons are also similar in Hf isotopic composition, epsilon(Hf) (t) and t(DM2)(Hf) mainly range from -6.0 to 6.0 and 2550Ma to 2950Ma, respectively. Combined with previous work, the main conclusions can be drawn as follows: 1) The source region is predominated by Late Neoarchean and Late Paleoproterozoic rocks, partly with the high-grade metamorphic overprinting of the Late Neoarchean and Late Paleoproterozoic; 2) the rocks of different ages in the source region are mainly formed by the crustal recycling of Early Neoarchean material; 3) the Bayan Obo Group and Sailinhudong Group were formed in similar depositing environment and the detrital sediments were derived from Early Precambrian basement in the northern margin of the North China Craton, which is consistent with the conclusion that they were formed at the same time.
学科主题	地质年代学
WOS关键词	NORTH CHINA CRATON ; XI ULANBULANG AREA ; NB-FE DEPOSIT ; INNER-MONGOLIA ; DAQINGSHAN AREA ; LU-HF ; TECTONIC IMPLICATIONS ; MASS-SPECTROMETRY ; METAMORPHIC ROCKS ; CARBONATITE DYKE
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000344215200013
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40518]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing SHRIMP Ctr, Beijing 100037, Peoples R China 2.Chinese Acad Geol Sci, Beijing 100037, Peoples R China 3.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Ma MingZhu,Zhang YuXu,Xie HangQiang,et al. SHRIMP U-Pb dating and LA-ICPMS Hf isotope analysis of detrital zircons from medium- to coarse-grained sandstones of the Bayan Obo Group and Sailinhudong Group and its geological significances[J]. ACTA PETROLOGICA SINICA,2014,30(10):2973-2988.
APA	Ma MingZhu,Zhang YuXu,Xie HangQiang,&Wan YuSheng.(2014).SHRIMP U-Pb dating and LA-ICPMS Hf isotope analysis of detrital zircons from medium- to coarse-grained sandstones of the Bayan Obo Group and Sailinhudong Group and its geological significances.ACTA PETROLOGICA SINICA,30(10),2973-2988.
MLA	Ma MingZhu,et al."SHRIMP U-Pb dating and LA-ICPMS Hf isotope analysis of detrital zircons from medium- to coarse-grained sandstones of the Bayan Obo Group and Sailinhudong Group and its geological significances".ACTA PETROLOGICA SINICA 30.10(2014):2973-2988.