Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第22卷    第3期    总第156期    2012年3月

[PDF全文下载]        

    

文章编号:1004-0609(2012)03-0928-06
采用音频大地电磁法间接探测深埋富集铁矿床
席振铢1, 2,朱伟国1, 2,张道军3,张良六4,冯万杰1, 2,邓志刚3

(1. 中南大学 地球科学与信息物理学院,长沙 410083;
2. 中南大学 有色金属成矿预测教育部重点实验室,长沙 410083;
3. 长沙五维地科勘察技术有限责任公司,长沙 410205;4. 重庆市地质勘查局 川东南地质大队,重庆 400038
)

摘 要: 由于深埋富集铁矿矿体的埋深超过500 m,直接运用音频大地电磁法(AMT法)圈定深埋富集铁矿矿体异常的纵向分辨率难以实现,为此,根据矿床成因、成矿环境以及矿体赋存空间特征等地质因素,建立地质模型,在地质模型的基础上构建地电模型;在地电模型的基础上,应用AMT法达到间接找矿的目的。綦江式铁矿和宁乡式铁矿的勘查实践结果表明,应用AMT法能够确定找矿标志、含矿层次和赋矿构造等,从而间接实现探测深埋富集铁矿床。

 

关键字: 綦江式铁矿;宁乡式铁矿;AMT法;地电模型

Indirectly exploit buried deposits of rich iron by
audio-frequency magnetotelluric method
XI Zhen-zhu1, 2, ZHU Wei-guo1, 2, ZHANG Dao-jun3, ZHANG Liang-liu4, FENG Wan-jie1, 2, DENG Zhi-gang3

1. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;
2. Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education,
Central South University, Changsha 410083, China;
3. Changsha 5D Geo-survey and Technical Co., Ltd., Changsha 410205, China;
4. Geological Team of Southeastern Sichuan, Chongqing Bureau of Geological Exploration and Exploitation of
Mineral Resources, Chongqing 400038, China

Abstract:When the enrichment iron ore is buried more than 500 m, it is difficult to achieve the longitudinal resolution of iron ore abnormalities by using audio-frequency magnetotelluric (AMT) method directly. For this reason, based on the geological factors of the ore genesis, metallogenic environment, ore controlling space, and so on, the geological model was made and then the electrical model was set up, which was used to achieve the aim of indirect ore prospection by AMT method. The prospecting tests results in Qijiang-type iron deposit and Ningxiang-type iron deposit prove that the AMT method can deterimine prespecting mark, ore-bearing strata, ore-bearing structure and so on. So, indirectly detect deep-buried rich iron ore.

 

Key words: Qijiang-type iron deposit; Ningxiang-type iron deposit; AMT method; geoelectric model

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com