Early Paleozoic adakitic rocks in Mohe area at the northern end of the Da Hinggan Mountains and their geological significance

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	Early Paleozoic adakitic rocks in Mohe area at the northern end of the Da Hinggan Mountains and their geological significance
	Qin, XF; Yin, ZG; Wang, Y; Guo, YS; Liu, XG; Zhou, SQ
刊名	ACTA PETROLOGICA SINICA
	2007-06
卷号	23 期号:6 页码:1501-1511
关键词	adakitic rocks geological significance early paleozoic Mohe northern Da Hinggian Mountains 埃达克质岩地质意义早古生代漠河大兴安岭北端
ISSN号	1000-0569
其他题名	大兴安岭北端漠河地区早古生代埃达克质岩特征及地质意义
通讯作者	Qin, XF (reprint author), Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Peoples R China.
中文摘要	笔者近期在大兴安岭北端漠河地区早古生代花岗岩的研究中发现了埃达克质岩,岩石类型主要为二长花岗岩及少量花岗闪长岩,岩石富 K 但相对略富钠(Na_2O/K_2O>1),富 SiO_2;高 Sr 低 Y、Yb,Sr/Y>40;富集 LREE,亏损重稀土元素,La/Yb>20,Eu 呈弱负异常或轻微正异常(δEu=0.71～1.1)。与典型的俯冲板片熔融形成的埃达克岩相比更为富硅和钾,属高钾钙碱性系列,具有低的 Mg~#(31.1～34.9)及不同于Ⅰ型埃达克岩的 Nd、Sr 同位素组成,属Ⅱ型埃达克质岩,推测形成于加厚的中基性下地壳的部分熔融。漠河早古生代埃达克岩的确认表明额尔古纳地块早古生代有过...
学科主题	Geology
出版地	BEIJING
语种	中文
WOS记录号	WOS:000248791900024
内容类型	期刊论文
源URL	[http://ir.lzu.edu.cn/handle/262010/119745]
专题	资源环境学院_期刊论文
推荐引用方式 GB/T 7714	Qin, XF,Yin, ZG,Wang, Y,et al. Early Paleozoic adakitic rocks in Mohe area at the northern end of the Da Hinggan Mountains and their geological significance[J]. ACTA PETROLOGICA SINICA,2007,23(6):1501-1511.
APA	Qin, XF,Yin, ZG,Wang, Y,Guo, YS,Liu, XG,&Zhou, SQ.(2007).Early Paleozoic adakitic rocks in Mohe area at the northern end of the Da Hinggan Mountains and their geological significance.ACTA PETROLOGICA SINICA,23(6),1501-1511.
MLA	Qin, XF,et al."Early Paleozoic adakitic rocks in Mohe area at the northern end of the Da Hinggan Mountains and their geological significance".ACTA PETROLOGICA SINICA 23.6(2007):1501-1511.