The Geochemical and Zircon Trace Elements Characteristics of A-type;Granitoids in Boziguoer, Baicheng County, Xinjiang

doi:10.1111/1755-6724.12161

	The Geochemical and Zircon Trace Elements Characteristics of A-type;Granitoids in Boziguoer, Baicheng County, Xinjiang
	Liu Chunhua 6; Yin Jingwu 1; Wu Cailai ; Shao Xingkun 2; Yang Haitao 3; Xu Haiming 4; Wang Jun 4
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2013
卷号	87 期号:6 页码:1585-1603
关键词	A-type granitoids mineralogy petrology geochemistry Boziguoer Southwest Tianshan
ISSN号	1000-9515;EI 1755-6724
DOI	10.1111/1755-6724.12161
英文摘要	The Boziguoer A-type granitoids in Baicheng County, Xinjiang, belong to the northern margin of the Tarim platform as well as the neighboring EW-oriented alkaline intrusive rocks. The rocks comprise an aegirine or arfvedsonite quartz alkali feldspar syenite, an aegirine or arfvedsonite alkali feldspar granite, and a biotite alkali feldspar syenite. The major rock-forming minerals are albite, K-feldspar, quartz, arfvedsonite, aegirine, and siderophyllite. The accessory minerals are mainly zircon, pyrochlore, thorite, fluorite, monazite, bastnaesite, xenotime, and astrophyllite. The chemical composition of the alkaline granitoids show that SiO2 varies from 64.55% to 72.29% with a mean value of 67.32%, Na2O+K2O is high (9.85%-11.87%) with a mean of 11.14%, K2O is 2.39%-5.47% (mean = 4.73%), the K2O/Na2O ratios are 0.31-0.96, Al2O3 ranges from 12.58% to 15.44%, and total FeOT is between 2.35% and 5.65%. CaO, MgO, MnO, and TiO2 are low. The REE content is high and the total SREE is (263-1219) ppm (mean = 776 ppm), showing LREE enrichment and HREE depletion with strong negative Eu anomalies. In addition, the chondrite-normalized REE patterns of the alkaline granitoids belong to the seagull pattern of the right-type. The Zr content is (113-1246) ppm (mean = 594 ppm), Zr+Nb+Ce+Y is between (478-2203) ppm with a mean of 1362 ppm. Furthermore, the alkaline granitoids have high HFSE (Ga, Nb, Ta, Zr, and Hf) content and low LILE (Ba, K, and Sr) content. The Nb/Ta ratio varies from 7.23 to 32.59 (mean = 16.59) and the Zr/Hf ratio is 16.69-58.04 (mean = 36.80). The zircons are depleted in LREE and enriched in HREE. The chondrite-normalized REE patterns of the zircons are of the seagull pattern of the left-inclined type with strong negative Eu anomaly and without a Ce anomaly. The Boziguoer A-type granitoids share similar features with A1-type granites. The average temperature of the granitic magma was estimated at 832-839 degrees C. The Boziguoer A-type granitoids show crust-mantle mixing and may have formed in an anorogenic intraplate tectonic setting under high-temperature, anhydrous, and low oxygen fugacity conditions.
学科主题	火成岩岩石学
WOS关键词	U-PB GEOCHRONOLOGY ; SOUTHEASTERN AUSTRALIA ; PETROGENESIS ; ROCKS ; MAGMAS ; DISCRIMINATION ; ORIGIN ; BELT ; AGE ; CONSTRAINTS
WOS研究方向	Geology
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000328541900011
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40156]
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, State Key Lab Continental Tecton & Dynam, Beijing 100037, Peoples R China. 2.China Univ Geosci, Beijing 100083, Peoples R China. 3.Chinese Peoples Armed Police Force, Detachment Gen Gold Party, Mudanjiang 157021, Heilongjiang, Peoples R China. 4.North West Inst Nonferrous Met Geol, Xian 710054, Shaanxi, Peoples R China. 5.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China. 6.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Liu Chunhua,Yin Jingwu,Wu Cailai,et al. The Geochemical and Zircon Trace Elements Characteristics of A-type;Granitoids in Boziguoer, Baicheng County, Xinjiang[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2013,87(6):1585-1603.
APA	Liu Chunhua.,Yin Jingwu.,Wu Cailai.,Shao Xingkun.,Yang Haitao.,...&Wang Jun.(2013).The Geochemical and Zircon Trace Elements Characteristics of A-type;Granitoids in Boziguoer, Baicheng County, Xinjiang.ACTA GEOLOGICA SINICA-ENGLISH EDITION,87(6),1585-1603.
MLA	Liu Chunhua,et al."The Geochemical and Zircon Trace Elements Characteristics of A-type;Granitoids in Boziguoer, Baicheng County, Xinjiang".ACTA GEOLOGICA SINICA-ENGLISH EDITION 87.6(2013):1585-1603.