SHRIMP zircon U-Pb dating, geochemistry, Sr-Nd isotopic analysis of the Late Paleozoic intermediate-acidic intrusive rocks in the Hadamiao area, Xianghuang Banner, Inner Mongolia and its geological significances

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	SHRIMP zircon U-Pb dating, geochemistry, Sr-Nd isotopic analysis of the Late Paleozoic intermediate-acidic intrusive rocks in the Hadamiao area, Xianghuang Banner, Inner Mongolia and its geological significances
	Liu Jun 3; Wu Guang ; Li TieGang 1; Wang GuoRui ; Wu Hao 1
刊名	ACTA PETROLOGICA SINICA
	2014
卷号	30 期号:1 页码:95-108
关键词	Intermediate-acidic intrusive rocks Zirocn SHRIMP U-Pb age Geochemistry Hadamiao Central Asia Orogenic Belt
ISSN号	1000-0569
英文摘要	The Hadamiao area is located in the northern margin of the North China plate. The SHRIMP U-Pb dating of zircons from granite porphyry and diorite of the Hadamiao area yields ages of 271 +/- 3Ma and 267 +/- 3Ma. Granite porphyry is characterized by its high SiO2(averaging 75.11%) and K2O contents (averaging 5.06%), low MgO (averaging 0.43%), Cr (averaging 6.70 x 10(-6)) Ni (averaging 5. 15 x 10(-6)) and V contents (averaging 26. 86 x 10(-6)), but diorite is characterized by its lower SiO2, (averaging 57.28%) and K2O contents (averaging 1. 23%), higher MgO (averaging 5. 31%), Cr (averaging 195.18 x 10 (-6)) Ni (averaging 59. 11 x 10(-6)) and V contents (averaging 148.13 x 10(-6)), respectively. The rare earth elements (REE) contents have an obvious increase from diorite to granite porphyry, but granite porphyry has more strongly negative Eu anomalies and fractional degree of heavy REE (HREE) and light REE (LREE). These rocks are enriched in large ion lithophile elements (LILE), but depleted in high field strength elements (HFSE). Both granite porphyry and diorite share the common features of relative high I-Sr valeus (I-Sr: 0.704803 similar to 0.707025), low epsilon(Nd) (t) values (epsilon(Nd) (t): -3.92 similar to 1. 03) and young Nd-model age (898 similar to 1322Ma). We suggest that granite porphyry and diorite of the Hadamiao area were formed during a middle Permian subduction of paleo-Asian ocean slab. The high Mg diorite was a product of partial melting of mantle wedge replaced by slab-derived fluid and mixed by crustal materials, and granite porphyry was probable a product of crystallization differentiation of dioritic magma.
学科主题	火成岩岩石学
WOS关键词	TRONDHJEMITE-GRANODIORITE TTG ; PHANEROZOIC CRUSTAL GROWTH ; CENTRAL-ASIA ; TECTONIC IMPLICATIONS ; CONTINENTAL-CRUST ; NORTHERN XINJIANG ; NORTHEASTERN CHINA ; MANTLE INTERACTION ; ADJACENT REGIONS ; GRANITIC-ROCKS
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000330817100007
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40403]
专题	中国地质调查局青岛海洋地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China 2.China Univ Geosci, Beijing 100083, Peoples R China 3.中国地质科学院矿产资源研究所
推荐引用方式 GB/T 7714	Liu Jun,Wu Guang,Li TieGang,et al. SHRIMP zircon U-Pb dating, geochemistry, Sr-Nd isotopic analysis of the Late Paleozoic intermediate-acidic intrusive rocks in the Hadamiao area, Xianghuang Banner, Inner Mongolia and its geological significances[J]. ACTA PETROLOGICA SINICA,2014,30(1):95-108.
APA	Liu Jun,Wu Guang,Li TieGang,Wang GuoRui,&Wu Hao.(2014).SHRIMP zircon U-Pb dating, geochemistry, Sr-Nd isotopic analysis of the Late Paleozoic intermediate-acidic intrusive rocks in the Hadamiao area, Xianghuang Banner, Inner Mongolia and its geological significances.ACTA PETROLOGICA SINICA,30(1),95-108.
MLA	Liu Jun,et al."SHRIMP zircon U-Pb dating, geochemistry, Sr-Nd isotopic analysis of the Late Paleozoic intermediate-acidic intrusive rocks in the Hadamiao area, Xianghuang Banner, Inner Mongolia and its geological significances".ACTA PETROLOGICA SINICA 30.1(2014):95-108.