|本期目录/Table of Contents|

[1]叶永钦,叶松鑫,许幼,等.粤北长江铀矿田长排地区花岗岩体地球化学特征及其意义[J].地球科学与环境学报,2015,37(06):101-110.
　YE Yong-qin,YE Song-xin,XU You,et al.Geochemical Characteristics of Granite Body in Changpai Area of Changjiang Uranium Orefield, the Northern Guangdong and Their Significance[J].Journal of Earth Sciences and Environment,2015,37(06):101-110.
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第37卷
期数:
2015年第06期
页码:
101-110
栏目:
基础地质与矿产地质
出版日期:
2015-11-15

文章信息/Info

Title:
Geochemical Characteristics of Granite Body in Changpai Area of Changjiang Uranium Orefield, the Northern Guangdong and Their Significance
文章编号:
1672-6561(2015)06-0101-10
作者:
叶永钦; 叶松鑫; 许幼; 徐文雄
核工业二九〇研究所，广东 韶关 512029
Author(s):
YE Yong-qin;  YE Song-xin;  XU You;  XU Wen-xiong
No. 290 Research Institute of CNNC, Shaoguan 512029, Guangdong, China
关键词:
花岗岩; 铀矿; 地球化学; 岩石成因; 燕山早期; 印支期; 长排地区; 广东
Keywords:
granite;  uranium ore;  geochemistry;  petrogenesis;  Early Yanshanian;  Indosinian;  Changpai area;  Guangdong
分类号:
P588.12；P595
DOI:
-
文献标志码:
A
摘要:
粤北长江铀矿田长排地区花岗岩体地球化学特征研究表明：该岩体具有高硅，富碱，w(K2O)>w(Na2O)，中—高铝，低Ti、Fe、Mg等地球化学特征，属于典型的S型花岗岩；在原始地幔标准化微量元素蛛网图上，大离子亲石元素Rb、Th、U富集，Ba、Nb、Sr、Eu等元素明显亏损；球粒陨石标准化稀土元素配分模式表现为明显右倾型。主量元素和微量元素含量及比值特征显示：花岗岩体源自成熟度较高的陆壳物质；源区物质主要由贫黏土的砂质岩组成；花岗岩体形成于伸展构造环境。花岗岩体产铀性研究表明：长排地区两期花岗岩体具有较高的铀区域地球化学背景，且岩体中的铀均受到了活化改造和再分配，具备较高的产铀潜力。
Abstract:
The geochemical characteristics of granite body in Changpai area of Changjiang uranium orefield, the northern Guangdong, were studied. The results show that the granite body has the characteristics of high Si and alkalis, w(K2O)＞w(Na2O), medium-high Al, and low Ti, Fe, Mg, etc.; the granite body belongs to the typical S-type; according to the primitive mantle-normalized trace element spider diagrams, the large ion lithophile elements including Rb, Th and U are enriched, and the Ba, Nb, Sr, Eu, etc. are depleted; the chondrite-normalized REE patterns are obvious right deviation type. The contents and ratio characteristics of major and trace elements show that the granite body derives from the continental crust material with high maturity; the source materials are composed by the poor clay sandstone; the granite body forms in extensional tectonic settings. The study on the uranium production shows that the Indosinian and Early Yanshanian granite bodies in Changpai area have high regional geochemical background of uranium, and the uranium in granite body suffers reforming activation and redistribution, so that the granite body has higher production potential of uranium.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2014-12-10
基金项目:“十一五”国家科技支撑计划项目(2011BAB04B07-5);中国地质调查局地质大调查项目(1212011220781);中国核工业地质局铀矿地质项目(2011-71)
作者简介:叶永钦(1988-),男,福建漳州人,助理工程师,理学硕士,E-mail:yeyongqincdut@163.com。
更新日期/Last Update: 2015-11-27