下庄矿田新生代构造活动对铀矿化的影响
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- 英文论文题名：The influence of cdenozoic tectonic activity for uranium mineralization in xiazhuang uranium ore field
- 论文作者：况鹏
- 英文论文作者：KUANG Peng ; Research Institute NO.290 ; CNNC
- 年：2015
- 作者机构：核工业二九〇研究所;
- 论文关键词：下庄矿田 ; 新生代构造 ; 热液活动 ; 铀矿化
- 英文论文关键词：Xiazhuang uranium ore field ; Cenozoic tectonic ; hydrothermal activity ; uranium mineralization
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第1册（铀矿地质分卷、铀矿冶分卷）
- 语种：中文
- 分类号：P619.14
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：5
- 文件大小：294k
- 原文格式：O
- 会议级别：全国
摘要
文章将下庄矿田新生代构造活动分为有热液活动及无热液活动两种类型:第一种类型如上洞断裂带,表现为脆性干构造,原构造体系受新生代构造物理应力作用破坏明显,主要充填构造泥、碎裂岩、碎裂花岗岩等,无明显热液活动迹象,围岩蚀变范围小;第二种类型如龟尾山断裂带,原构造体系受新生代构造热液活动作用破坏显明,主要充填石英岩,围岩蚀变范围宽。新生代构造活动对铀矿化的影响主要有(1)构造带两侧差异性抬升对矿体的破坏(保护)性作用,(2)热液活动对原生矿体的破坏作用,(3)次级构造带、细小裂隙带对次生矿体的富集作用。
The Cenozoic tectonic activity divided into two types in this paper:strong hydrothermal activity and no hydrothermal activity.The first type,such as Shangdong fault,is dry brittle structure,the original structure had been destructed by Cenozoic tectonic stress.The fault mainly filled with mud,cataclasite,cataclastic granite,no obvious signs of hydrothermal activity,a small rock alteration range.The second type,such as Guiweishan fault,is opposite the first one,the destruction of original structural by Cenozoic tectonic hydrothermal activity was obvious.The fault mainly filled with quartzite,had a wide range of country rock alteration.The mainly influence of uranium mineralization by the Cenozoic tectonic activity is that(1) on both flanks of fault had been differential uplift which could protected(eroded) the ore,(2)Cenozoic hydrothermal activity eroded original ore body,(3)the fracture and secondary fault accumulated secondary uranium ore.
The Cenozoic tectonic activity divided into two types in this paper:strong hydrothermal activity and no hydrothermal activity.The first type,such as Shangdong fault,is dry brittle structure,the original structure had been destructed by Cenozoic tectonic stress.The fault mainly filled with mud,cataclasite,cataclastic granite,no obvious signs of hydrothermal activity,a small rock alteration range.The second type,such as Guiweishan fault,is opposite the first one,the destruction of original structural by Cenozoic tectonic hydrothermal activity was obvious.The fault mainly filled with quartzite,had a wide range of country rock alteration.The mainly influence of uranium mineralization by the Cenozoic tectonic activity is that(1) on both flanks of fault had been differential uplift which could protected(eroded) the ore,(2)Cenozoic hydrothermal activity eroded original ore body,(3)the fracture and secondary fault accumulated secondary uranium ore.
引文
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[2]张宝武,邓平,于伟营,等.华南铀矿地质志[M].2004:326-385.
[3]张珂,闫亚鹏,赖中信,等.下庄铀矿田构造特征及与热液铀矿化的关系[J].地学前沿,2011,18(1):118-125.
[4]张万良.下庄铀矿田保存因素研究[J].地质力学学报,2013,19(2):152-187.
[5]陈小东,刘翔,邓国泉,等.湘桂地区中新生代走滑断裂系统对铀成矿的控制作用[J].大地构造与成矿学,2002,26(4):345-353.
[6]王军,赖中信,张辉仁,等.粤北下庄矿田新生代构造演化及其对铀成矿的影响[J].大地构造与成矿学,201l,35(3):355-363.
[7]邓平,沈渭洲,等.下庄矿田338矿床地幔流体与铀矿成矿作用[J].华南铀矿地质,2003,20(2):37-47.
[8]胡瑞忠,毕献武,彭建堂,等.华南地区中生代以来岩石圈伸展及其与铀成矿关系研究的若干问题[J].矿床地质,2007,26(2):139-152.
[9]商朋强,胡瑞忠,毕献武,等.华南热液铀矿成矿作用若干问题探讨[J].矿物岩石地球化学通报,2007,26(3):290-294.
[10]陈国能,曹建劲,张珂.原地重熔与元素地球化学场[M].北京:地质出版社,1996:1-96.
[11]Chen G N,Grapes,R.Granite Genesis:In-situ Melting and Crustal Evolution[M].Dordrecht,Netherlands:Springer,2007:1-271.
[12]杜乐天.我国花岗岩型铀矿的主要地质规律[C].花岗岩型铀矿文集.北京:原子能出版社,1982:1-84.
[13]杜乐天.我国花岗岩型铀矿的主要地质规律[C].花岗岩型铀矿文集.北京:原子能出版社,1982:283-327.