沽源—红山子铀成矿带赋矿火山岩的时空分布与岩石组合特征
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- 英文论文题名：The characteristics of rock association & time-space distribution on Guyuan-Hongshanzi uranium polymetallic metallogenic belt
- 论文作者：赵博
- 英文论文作者：ZHAO Bo ; Geologic Party No.243 ; CNNC
- 年：2015
- 作者机构：核工业二四三大队;
- 论文关键词：沽源-红山子铀成矿带 ; 赋矿火山岩 ; 含矿层位 ; 土城子组 ; 新民组 ; 找矿空间
- 英文论文关键词：Guyuan-Hongshanzi uranium metallogenic belt ; ore-bearing volcanics ; ore-hosting horizon ; Tuchengzi FM ; Xinmin FM ; prospecting space
- 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：P588.14;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：6
- 文件大小：704k
- 原文格式：O
- 会议级别：全国
摘要
沽源—红山子铀成矿带位于燕辽成矿带与大兴安岭成矿带南段叠合部位,是我国北方重要的铀多金属成矿带之一,区内铀矿化以火山岩型为主,目前已发现大官厂、张麻井、红山子、灶火沟门、上马架子等铀多金属矿床及众多铀矿化异常点。关于成矿带内各矿床矿化赋存层位一直存在争议,铀矿地质界长期将南段赋矿火山岩归于晚侏罗世张家口组、北段赋矿火山岩归于晚侏罗世兴安群(包括满克头鄂博组、玛尼吐组和白音高老组),并认为两者岩石组合一致。但新的研究表明,燕山火山岩带张家口组的地质时代属早白垩世早期,大兴安岭火山岩带南部兴安群存在年龄跨度大、与新民组、梅勒图组存在重合等问题。本文通过对比典型铀矿床的含矿层位及赋矿围岩时代等特征,尝试厘清成矿带内各矿床主含矿层位在时间、空间上的分布规律,并借此提出沽源—红山子成矿带新的找矿空间,为今后的铀矿找矿工作提供线索。
Guyuan-Hongshanzi uranium metallogenic belt is located in the superimposed areas between Yanliao metallogenic belt and Da Xinganling metallogenic belt,it's an important uranium polymetallic metallogenic belt of northern China,the main mineralization type in this area is volcanic type,many uranium anomaly & mineralized sites and U-polymetallic deposits such as Daguanchang,Zhangmajing,Hongshanzi,Zaohuogoumen,Shangmajiazi deposits had been found in past years.The ore-hosting horizons of these deposits is always in dispute,the age of ore-bearing volcanics in southern belt has been fallen under Late Jurassic Zhangjiakou Fm while the age in nouthern belt has been fallen under Late Jurassic Xing'an FM(Manketou Obo Formation,Manitu Formation and Baiyingaolao Formation) by uranium geology in long-term,and think they have the same rock association.But new research suggests that the geological age of Zhangjiakou Fm in Yanshan volcanic belt is Early Cretaceous,there are some questions such as large span of age,has Coincidence with Xinmin FM & Meiletu FM of Xing'an FM in southern Da Hinggan Mountains volcanic belt.Through comparing the ore-hosting horizons and the time characteristics of torebearing volcanics of typical uranium deposits,this paper try to clarify the distribution law of main ore-hosting horizons in space&time,then point out the new prospecting space of Guyuan—Hongshanzi uranium metallogenic belt,provide informations for uranium-prospecting.
Guyuan-Hongshanzi uranium metallogenic belt is located in the superimposed areas between Yanliao metallogenic belt and Da Xinganling metallogenic belt,it's an important uranium polymetallic metallogenic belt of northern China,the main mineralization type in this area is volcanic type,many uranium anomaly & mineralized sites and U-polymetallic deposits such as Daguanchang,Zhangmajing,Hongshanzi,Zaohuogoumen,Shangmajiazi deposits had been found in past years.The ore-hosting horizons of these deposits is always in dispute,the age of ore-bearing volcanics in southern belt has been fallen under Late Jurassic Zhangjiakou Fm while the age in nouthern belt has been fallen under Late Jurassic Xing'an FM(Manketou Obo Formation,Manitu Formation and Baiyingaolao Formation) by uranium geology in long-term,and think they have the same rock association.But new research suggests that the geological age of Zhangjiakou Fm in Yanshan volcanic belt is Early Cretaceous,there are some questions such as large span of age,has Coincidence with Xinmin FM & Meiletu FM of Xing'an FM in southern Da Hinggan Mountains volcanic belt.Through comparing the ore-hosting horizons and the time characteristics of torebearing volcanics of typical uranium deposits,this paper try to clarify the distribution law of main ore-hosting horizons in space&time,then point out the new prospecting space of Guyuan—Hongshanzi uranium metallogenic belt,provide informations for uranium-prospecting.
引文
[1]巫建华.大兴安岭红山子盆地火山岩系岩石地层对比[R].2013.
[2]吴仁贵.沽源-红山子地区中生代火山作用与铀成矿关系[R].2011.
[3]王五力.土城子阶、义县阶标准地层剖面建立与研究[R].2006.
[2]吴仁贵.沽源-红山子地区中生代火山作用与铀成矿关系[R].2011.
[3]王五力.土城子阶、义县阶标准地层剖面建立与研究[R].2006.