[1]王庆喜,吴 迪,吕志平,等.辽宁连山关地区混合花岗岩岩石地球化学特征及构造环境[J].华东地质,2017,38(02):108-116.[doi:10.16788/j.hddz.32-1865/P.2017.02.004]
 WANG Qing-xi,WU Di,Lü Zhi-ping,et al.Geochemical characteristics and tectonic environment of migmatitic granites in the Lianshanguan area, Liaoning Province[J].East China Geology,2017,38(02):108-116.[doi:10.16788/j.hddz.32-1865/P.2017.02.004]
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辽宁连山关地区混合花岗岩岩石地球化学特征及构造环境()
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《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
38
期数:
2017年02期
页码:
108-116
栏目:
基础地质
出版日期:
2017-06-15

文章信息/Info

Title:
Geochemical characteristics and tectonic environment of migmatitic granites in the Lianshanguan area, Liaoning Province
文章编号:
2096-1871(2017)02-108-09
作者:
王庆喜1吴 迪1吕志平1李文辉2
(1. 核工业二四〇研究所,沈阳 110032; 2. 核工业二〇三研究所,咸阳 712000)
Author(s):
WANG Qing-xi1 WU Di1 Lü Zhi-ping1LI Wen-hui
(1. NO.240 Research Institute of Nuclear Industry,Shenyang 110032,China; 2. NO.203 Research Institute of Nuclear Industry,Xianyang 712000,China)
关键词:
混合花岗岩 地球化学特征 S型花岗岩 构造环境 连山关
Keywords:
migmatitic granite goechemical characteristics S-type granite tectonic environment Lianshanguan
分类号:
P588.12+1
DOI:
10.16788/j.hddz.32-1865/P.2017.02.004
文献标志码:
A
摘要:
连山关地区前寒武系赋存的铀矿床,是我国为数不多的不整合型铀矿床。对连山关混合花岗岩开展地球化学研究,通过分析岩石主量、微量元素地球化学特征,探讨岩石成因及形成的构造环境。该区混合花岗岩属于富硅,高碱、低钛的钙碱性系列岩石,稀土总量较高,轻稀土元素明显富集,具有中等程度的Eu负异常; U、La、P相对富集,Ba、Ta、Nb、Sr、Ti相对亏损。该混合花岗岩具有S型花岗岩的特征,其源岩为中、上地壳酸性岩石,可能形成于太古宙克拉通裂陷拉张的构造环境。
Abstract:
The uranium deposit in the Lianshanguan area, which occurs in the Precambrian strata, is one of the few unconformity-type uranium deposits in China. This study carried out geochemical analysis of the Lianshanguan migmatitic granite. The geochemical characteristics of the main elements and trace elements indicate their petrogenesis and tectonic setting. The migmatitic granites belong to high Si and alkali, low Ti calc-alkalic series rocks, characterized by high REE content(enrichment of LREE), moderately negative Eu anomaly, relatively enrichment of U, La and P and depletion of Ba, Ta, Nb, Sr and Ti. The study shows that the migmatitic granites are characteristic of S-type granite. The protolith is the felsic rocks derived from the middle and upper crust and the migmatitic granite may be formed at the tectonic setting of rifting and extension of the Archean craton.

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备注/Memo

备注/Memo:
*收稿日期:2016-05-26 修订日期:2016-06-28 责任编辑:谭桂丽
基金项目:中国核工业地质局“辽宁省本溪县连山关—祁家堡铀矿普查(项目编号:201163)”资助。
第一作者简介:王庆喜,1988年生,男,工程师,主要从事铀矿地质勘查工作。
更新日期/Last Update: 2017-06-16