粤北诸广南铀矿聚集区岩浆、构造与铀成矿活动

钟福军; 潘家永; 张伟盟; 赖静; 周堂波; 刘文泉

doi:10.12090/j.issn.1006-6616.2019.25.S1.018

粤北诸广南铀矿聚集区岩浆、构造与铀成矿活动

doi: 10.12090/j.issn.1006-6616.2019.25.S1.018

1.
东华理工大学核资源与环境国家重点实验室, 江西南昌 330013
2.
核工业二九〇研究所, 广东韶关 512026

基金项目:

科技部重点研发计划项目 2017YFC0602600

国家自然基金项目 41772066

国家自然基金项目 41702076

核资源与环境国家重点实验室开放基金项目 NRE1807

江西省教育厅科技项目 GJJ180394

详细信息

作者简介:
钟福军(1988-), 男, 博士, 讲师, 主要从事铀矿地质教学与科研工作。E-mail:zhongfujun602@126.com

中图分类号: P619.14
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出版历程
- 刊出日期: 2019-05-01

MAGMATION, TECTONIC ACTIVITY AND URANIUM MINERALIZATION EVENTS OF SOUTHERN ZHUGUANG URANIUM ORE-CONCENTRATED DISTRICT, NORTHERN GUANGDONG, CHINA

1.
State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, China
2.
No. 290 Research Institute, China National Nuclear Corporation, Shaoguan 512026, Guangdong, China

摘要

摘要: 粤北诸广南铀矿聚集区位于南岭诸广山岩体中东部，区内铀矿资源丰富，是中国重要的铀矿产基地。区内以发育花岗岩型铀矿化为主，整体上受中生代区域性岩浆—构造—热液活动"三位一体"联合控制。区域性花岗质岩浆活动对铀矿化有着预富集作用，断裂构造活动为成矿提供了有利空间，热液活动促使了花岗岩中铀的活化迁移和富集成矿。研究区的铀成矿作用具有同时性和多期性特征，形成于华南白垩纪—古近纪岩石圈伸展动力学背景下，统一受制于地壳的强烈拉张作用。由诸广山岩体与南雄盆地组成的盆山体系的白垩纪—古近纪构造演化可能是导致诸广南铀矿聚集区形成的重要因素之一。
- 花岗岩型铀矿 /
- 铀矿化 /
- 岩浆作用 /
- 断裂构造 /
- 诸广地区
Abstract: The southern Zhuguang uranium ore-concentrated district, which is located in central-eastern part of Zhuguangshan complex in Nanling region, China, is an important producer of uranium resource during the past three decades. There is abundant granite related uranium deposits that are generally controlled by the Mesozoic regional magmation, tectonic activity and hydrothermal events in study area, namely "trinity". The Indosinian and Yanshanian magmatism makes uranium preconcentration in crust of Zhuguang area; the tectonic activity provides a favorable location for uranium mineralization; and the hydrothermal activity drives the uranium migration and ore-formation in altered granite and silicified fracture zone. The uranium mineralization in Zhuguang area is characterized by synchronism and multiple stages, and restrained by the crust extension during the Cretaceous Paleogene lithospheric extension in South China. The Cretaceous Paleogene structural evolution of Nanxiong basin and Zhuguangshan complex is possibly responsible for the large scale uranium mineralization in Zhuguang area.
- granite-type uranium deposit /
- uranium mineralization /
- magmatism /
- fault structure /
- Zhuguang area

HTML全文

图 1 诸广南铀矿聚集区地质简图^[3]

Figure 1. Geological sketch of uranium ore-concentrated district of southern Zhuguang ^[3]

下载: 全尺寸图片幻灯片

图 2 诸广地区岩浆活动年龄直方图

Figure 2. Histogram of magmatic diagenetic ages in Zhuguang area

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图 3 诸广地区花岗岩U-Th散点图(数据引自文献[11])(data from ^[15])

Figure 3. U-Th diagram of granites in Zhuguang area (data from^[15])

下载: 全尺寸图片幻灯片

图 4 诸广地区铀矿床成矿年龄直方图

Figure 4. Histogram of uranium mineralize ages in Zhuguang area

下载: 全尺寸图片幻灯片

图 5 岩浆活动、构造运动与铀矿化对比^[11]

Figure 5. Comparison of ages for magmatic, tectonic and uranium mineralization events^[11]

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表 1 诸广地区铀矿床成矿年龄

Table 1. Mineralization ages of uranium deposits in Zhuguang area

矿田	矿床、矿点	测试方法	成矿年龄/Ma	来源
全安	234	ID-TIMS	76	[11]
	238西段	ID-TIMS	78、83、100	[11]
	238东段	ID-TIMS	75	[11]
长江	363	ID-TIMS	78、75	[11]
	362	ID-TIMS	84、89	[11]
	333	ID-TIMS	76、78	[11]
	棉花坑	LA-ICP-MS	60.0±0.5、59.5±1.0	[5]
	书楼丘	LA-ICP-MS	71.4±1.3	[5]
	长排	LA-ICP-MS	70.2±0.5	[5]
	240	ID-TIMS	76、85	[11]
城口	2401	ID-TIMS	47、51	[11]
	2405	ID-TIMS	76、85	[11]
百顺	361	ID-TIMS	86	[15]
	363	ID-TIMS	80	[11]
	231	ID-TIMS	75	[11]
	233	ID-TIMS	73	[11]
	235	ID-TIMS	82	[11]
澜河	201	SIMS	73.3±4.7	[16]
澜河	367	ID-TIMS	88	[11]
鹿井	322	ID-TIMS	95	[15]
	324	ID-TIMS	90	[15]
	325	ID-TIMS	87	[15]

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