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
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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. |
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