| 中国主要铀矿类型、特点及其空间分布 |
| |
| 引用本文： | 张万良.中国主要铀矿类型、特点及其空间分布[J].地质找矿论丛,2017,32(4):526-534. |
| |
| 作者姓名： | 张万良 |
| |
| 作者单位： | 核工业270研究所, 江西 南昌 330200 |
| |
| 基金项目： | 中国地质调查局项目，中国核工业地质局地勘费项目 |
| |
| 摘 要： | 中国铀矿床通常划为四大类型,即花岗岩型、火山岩型、碳硅泥岩型、砂岩型。本文根据一些火山岩型铀矿的形成环境与火山岩浆活动关系不大,主要受火山岩浆活动之后的中酸性斑岩侵入活动控制的事实,辟出斑岩铀矿类型;斑岩型与花岗岩型、火山岩型铀矿是并列关系。花岗岩型和斑岩型铀矿归为构造控制型铀矿,火山岩型、碳硅泥岩型和砂岩型铀矿归为层位控制型铀矿。中国铀矿在空间分布上,具有成带成片、相对集中、不均衡分布特点,以SN向贺兰山—龙门山—小江断层带为界,可划分为东部滨太平洋铀成矿域、西(北)部古亚洲铀成矿域、西(南)部特提斯铀成矿域。滨太平洋铀成矿域可进一步划分为华南铀矿省、华北铀矿省和东北铀矿省。西(南)部的特提斯铀成矿域,工作程度低,找矿潜力尚待深入研究。西(北)部古欧亚大陆铀成矿域,有西北铀矿省。4大铀矿省内共划分出18个成矿带(区)。以火山岩、斑岩型铀矿为主的成矿带主要分布在我国东部靠近沿海的滨太平洋构造岩浆活动带内,以花岗岩型铀矿为主的成矿带则主要分布在我国中东部多期构造—岩浆活动带内,以碳硅泥岩型铀矿为主的成矿带主要分布在扬子陆块北部和东南部边缘地带和南秦岭地带,以砂岩型铀矿为主的成矿带主要分布在我国北部陆相沉积盆地内。铀成矿带(区)分布的不均匀性,不仅受区域成矿地质背景、保矿条件等因素控制,而且还与当前地质勘查工作程度、经济技术条件有关。
|
| 关 键 词： | 铀矿类型 成矿特点 铀成矿省 铀成矿带 空间分布 不均匀性 |
| 收稿时间： | 2016/7/6 0:00:00 |
| 修稿时间： | 2017/8/30 0:00:00 |
The main types and characteristics and spatial distribution of uranium deposits in China |
| |
| ZHANG Wanliang.The main types and characteristics and spatial distribution of uranium deposits in China[J].Contributions to Geology and Mineral Resources Research,2017,32(4):526-534. |
| |
| Authors: | ZHANG Wanliang |
| |
| Institution: | 270 Research Institute of CNNC, Jiangxi province, Nanchang county 330200, China |
| |
| Abstract: | Generally,uranium deposits in China are divided into 4 types i.e.the granite-hosted,volcanics-hosted,carbon silicon mudstone-hosted,sandstone-hosted deposit.However,some volcanics-hosted uranium deposits are not related to the original volcanism and magmatism.The fact is that they are mainly controlled by the post-volcanism acidic porphyry intrusion.The author put forward a new type,the porphyry uranium deposit.The granite-hosted and porphyry uranium deposits are classified into the structure-controlled type and the volcanics-hosted and carbon silicon mudstone-hosted and sandstone-hosted uranium deposit into stratabound type.Spayially,they are unevenly distributed and concentrated relatively in belts or zones.The belts are divided by a boundary of Helan mountain-Longmen mountain-Xiaojiang fault.The eastern Pacific rim uranium metallogenic domain occurs in east of the division boundary;the ancient Asian domain in the west (north) and Tethys domain in the west(south) and Ancient Euroasian domain and the northwest province in the west (north).The eastern Pacific uranium metallogenic domain can be further divided into the South China and North China and Northeast China uranium ore Provinces.Little geological works has been done in the Tethys Uranium metallogenic domain.And it is potential for further prospecting and study.In the 4 provinces there are 18 sub-belts (zone).The sub-belts of the volcanics-hosted and porphyry deposit mainly occur in the belts(zones) with multi-tectonic-magmatic activities in the coastal area of the east China and the eastern Pacific rim domain,the granite-hosted type in the belts(zones) with multi-tectonic-magmatic activities in the east-central China,the carbon silicon mudstone-hosted type mainly in north part and the southeast margin of the Yangtze block and the southern Qinling fold belt,the sandstone-hosted type in he continental sedimentary basin in North china.The uneven distribution is not only influenced by the regional geological background and ore preservation conditions but also by geological working density and technical and economic condition. |
| |
| Keywords: | uranium deposit type metallogenic characteristics uranium metallogenic province uranium metallogenic belt spatial distribution uneven distribution |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地质找矿论丛》浏览原始摘要信息 |
| 点击此处可从《地质找矿论丛》下载免费的PDF全文 |
|
