img

QQ群聊

img

官方微信

  • CN 62-1112/TF 
  • ISSN 1005-2518 
  • 创刊于1988年
高级检索
矿产勘查与资源评价

坦桑尼亚Maheiga金矿区航空、地面磁力异常特征与找矿研究

  • 程华 ,
  • 李水平 ,
  • 邵江波 ,
  • 荆鹏 ,
  • 孙进 ,
  • 冯攀 ,
  • 康健 ,
  • 曹杰
展开
  • 河南省地质矿产勘查开发局第二地质矿产调查院,河南  郑州   450001
程华(1982-),男,河南滑县人,工程师,从事矿产勘查与研究工作。71216396@qq.com

收稿日期: 2014-12-10

  修回日期: 2015-02-03

  网络出版日期: 2015-11-16

The Air and Ground Magnetic Anomaly Characteristics and Prospetting Research on the Meheiga Gold Field in Tanzania

  • CHENG Hua ,
  • LI Shuiping ,
  • SHAO Jiangbo ,
  • JING Peng ,
  • SUN Jin ,
  • FENG Pan ,
  • KANG Jian ,
  • CAO Jie
Expand
  • No.2 Institute of Geological and Mineral Resources Survey of Henan,Zhengzhou   450001,Henan,China

Received date: 2014-12-10

  Revised date: 2015-02-03

  Online published: 2015-11-16

Supported by

国土资源部国际科技合作项目“坦桑尼亚Mwamola地区Maheiga金矿详查”(编号:2010-188)资助

摘要

与条带状含铁建造(BIF)伴生的金矿产量约占世界黄金总产量的13%,而坦桑尼亚近1/3的黄金产量来自于BIF型金矿。通过对坦桑尼亚环维多利亚湖南部某区域航空磁力异常特征分析,结合研究区地质背景,解译了与金矿有关的BIF序列赋存范围,进而划定为地面找矿靶区;该区内沼泽性黑土和风化层覆盖较厚,利用赋矿岩石与围岩磁性差异显著的特点,地面磁测圈定了与金矿有关条带状含铁建造的分布位置;其磁测成果反映的ΔT异常清晰、形态规整且可信度高,为钻探工程布置提供了强有力的依据,目前,矿区已探明(332+333)金金属资源量34 t。同时,矿区外围磁力异常的分布特征进一步指示该区域内仍具有很大的找矿潜力,航空和地面磁力测量发挥了间接寻找隐伏含铁建造型金矿床的重要作用,是寻找BIF型金矿行之有效地勘探方法,对在矿区外围及其他类似地区进行间接寻找隐伏含铁建造型金矿具有非常重要的指导意义。

本文引用格式

程华 , 李水平 , 邵江波 , 荆鹏 , 孙进 , 冯攀 , 康健 , 曹杰 . 坦桑尼亚Maheiga金矿区航空、地面磁力异常特征与找矿研究[J]. 黄金科学技术, 2015 , 23(4) : 24 -29 . DOI: 10.11872/j.issn.1005-2518.2015.04.024

Abstract

Production of associated gold with BIF accounts for around 13% of the world’s gold production,almost one third of the gold production in Tanzania is from stripped iron formation gold mine.Through analysis of characteristics of aeromagnetic anomalies in south of Lake Victoria in Tanzania combined with  regional geological background,occurrence scope of BIF sequence related to gold ore was interpreted,and then target prospecting area was determined.It was found that the coverage of swampy black soil and weathering was thick in the study region.In addition,we applied magnetic differences significant characteristics of ore rock and surrounding rock to delineate distribution location of iron formation related to the gold mine by ground magnetometry.The results demonstrated that the form of abnormal ΔT was clear with morphology in order and high credibility,which provided a strong basis for drilling engineering arrangement,and the mining area has proven(332+333)34 t gold metal resources presently.Meanwhile,the distribution characteristics of mining area peripheral magnetic anomalies indicated great potential for prospecting in the area of aviation.Air,ground magnetic survey in searching for iron formation gold deposits played an important role,which was efficient exploration methods for looking for the BIF deposits,and the methods had extremely important guiding significance for searching for iron formation gold deposits in the mining area periphery and other similar areas.

参考文献

[1] 管志宁.地磁场与磁力勘探[M].北京:地质出版社,2005:81-83.
[2] 沈保丰,李上森,骆辉.前寒武纪条带状铁建造(BIF)中金的成矿作用[J].国外前寒武纪地质,1988,(1):1-34.
[3] 杨东潮,白德胜,曹琼.坦桑尼亚太古宙绿岩带中的BIF型金矿床的勘查标志——以Maheiga金矿为例[J].黄金科学技术,2013,21(4):1-8.
[4] 史建民,胡鑫,丁继双,等. 黑龙江大兴安岭地区航磁异常特征及找矿效果[J].中国地质,2014,41(2):611-620.
[5] 李水平,王建光,白德胜,等.坦桑尼亚Maheiga金矿地球物理特征与找矿标志[J]. 地球物理学进展,2014,29(5):2395-2400.
[6] Eberie D,Ostwald J,Plaumann G,et al.Report on gold exploration activities in selected target areas in the SIGA hills,NW-TANZANIA[R].Dodoma:Technical cooperation with theTANZANIA-Gelman Geological  geoplysical coopration project,1993.
[7] 谷懿,葛良全,熊盛青,等.航磁异常地面快速查证方法组合研究[J].地球物理学进展,2013,28(4):2009-2013.
[8] 李水平.低磁纬度地区ΔT异常处理解释方法在坦桑尼亚某地区金矿预查中的应用[J].物探与化探,2009,33(6):657-659.
[9] 刘天佑.磁法勘探软件手册MAGS3.0使用说明[M].武汉:中国地质大学,2009:60-62.
[10] 李水平,杨东朝,程华,等.坦桑尼亚条带状含铁建造磁化率参数统计特征及其应用[J].地质与勘探,2013,49(4):784-790.
[11] 骆遥,薛典军.磁赤道处化极方法[J].地球物理学报,2010,53(12):2998-3004.
[12] 李水平,杨东朝,朱鲁,等.磁力测量在隐伏含铁建造型金矿矿床及外围矿权区中的应用[J].黄金,2013,34(6):25-29.

文章导航

/