[1]张 景,朱红兵,邸兵叶,等.宁芜北火山岩覆盖区时间域激电三维反演及找矿预测——以吴庄工区为例[J].华东地质,2018,39(02):116-125.[doi:10.16788/j.hddz.32-1865/P.2018.02.006]
　ZHANG Jing,ZHU Hong-bing,DI Bing-ye,et al.Time-domain IP 3D inversion and ore-prospecting prediction of volcanic rock coverage area in the northern Nanjing-Wuhu area: A case study of the Wuzhuang work area[J].East China Geology,2018,39(02):116-125.[doi:10.16788/j.hddz.32-1865/P.2018.02.006]
点击复制

宁芜北火山岩覆盖区时间域激电三维反演及找矿预测——以吴庄工区为例()
分享到：

《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
39
期数:
2018年02期
页码:
116-125
栏目:
矿床地质
出版日期:
2018-06-15

文章信息/Info

Title:
Time-domain IP 3D inversion and ore-prospecting prediction of volcanic rock coverage area in the northern Nanjing-Wuhu area: A case study of the Wuzhuang work area
文章编号:
2096-1871(2018)02-126-08
作者:
张 景; 朱红兵; 邸兵叶; 鲁胜梅
(中国地质调查局南京地质调查中心,南京 210016)
Author(s):
ZHANG Jing; ZHU Hong-bing; DI Bing-ye; LU Sheng-mei
(Nanjing Center,China Geological Survey, Nanjing 210016, China)
关键词:
覆盖区;  时间域激电;  三维反演;  找矿预测;  长江中下游成矿带
Keywords:
coverage area;  time-domain IP;  3D inversion;  ore-prospecting;  Middle and Lower Yangtze metallogenic belt
分类号:
P631.1+4
DOI:
10.16788/j.hddz.32-1865/P.2018.02.006
文献标志码:
A
摘要:
宁芜地区是长江中下游成矿带铁铜多金属矿床最有利的成矿区之一,该区工作程度较高,已发现多处铁铜多金属矿床,但近年来找矿进展缓慢,如何在宁芜火山岩覆盖区实现找矿突破是目前研究的重点和热点。前人多采用时间域激电一维和二维反演技术进行资料处理和异常解释,因时间域激电三维反演技术对硬件要求较高,较少在实际中应用。在综合分析工作区区域地质资料、对典型地层和岩石标本进行物性参数测试和统计分析的基础上,采用T 30多功能电磁法发射机和EM-R06多功能电磁法接收机在吴庄工区开展时间域激电(TDIP)测量,利用EM3DSPI软件对野外实测数据进行三维反演。结果表明:工作区岩体大多呈岩株或岩脉侵入于大王山组火山岩中,具有以NE向断裂为主、NW向断裂穿插分布的特征。结合周边矿区和已施工钻孔资料,确定吴庄工区王家场为成矿有利区域,该区值得进一步开展地质调查工作。
Abstract:
The Nanjing-Wuhu area is one of the most favorable iron-copper polymetallic areas in the Middle and Lower Yangtze metallogenic belt. High extent of exploration in this area has led to discovery of several iron and copper polymetallic deposits. However, prospecting progress has been slow in recent years. Therefore, how to make prospecting breakthrough in the Nanjing-Wuhu volcanic rock covered area has thus become a research focus and hot spot. Previous researchers employed only one-dimensional and two-dimensional time domain inversion technique to process data and interpret anomalies. Three-dimensional inversion technique has not been put into practice due to its high hardware requirements. Based on regional geological data of the work area, as well as parameter measurement and statistical analysis of physical properties of typical formations and rock specimen, time domain induced polarization(TDIP)measurement in the Wuzhuang working area was conducted using a T30 electromagnetic transmitter and an EM-R06 multi-functional electromagnetic receiver, and three-dimensional inversion of field data was performed with EM3DSPI software. Three dimensional inversion results indicate that the rock masses in the work area intruded into the volcanic rock formation of Dawangshan Formation as stocks and dykes, characterized by dominant NE-trending faults interspersed by minor NW-trending faults. Combined with mining information in surrounding areas and existing drilling data, it can be considered that Wangjiachang at the Wuzhuang work area should be favorable area for mineralization and worthy of further deployment.

参考文献/References:

[1] 张昆,严加永,吕庆田,等.宁芜火山岩盆地及邻区上地壳电性结构研究[J].地球物理学报,2015,58(12):4505-4521.
[2] 侯龙海.浅析宁芜北段铜矿地质特征、找矿前景与方向[J]. 地质学刊,2008,32(4):263-269.
[3] 张景,陈国光,曾勇,等.综合找矿方法在宁芜北火山岩覆盖区的应用——以南门头工区为例[J].华东地质,2014,29(6):2730-2737.
[4] 严加永,吕庆田,吴明安,等.安徽沙溪铜矿区域重磁三维反演与找矿启示[J]. 地质学报,2014,88(4):507-518.
[5] 陈忠良,童劲松,吴雪峰,等.安徽运漕地区隐伏地质体三维模型构建及应用[J].资源调查与环境,2015,36(2):123-129.
[6] 马为,林星.三维时间域激电法在新疆卡拉盖雷铜金矿勘查中的应用[J].工程地球物理学报,2015,12(2):171-175.
[7] 向杰,陈建平,胡彬,等.基于三维地质—地球物理模型的三维成矿预测——以安徽铜陵矿集区为例[J].地球科学进展,2016,31(6):603-610.
[8] 毛先成,张苗苗,邓浩,等.矿区深部隐伏矿体三维可视化预测方法[J].地质学刊,2016,40(3):363-370.
[9] 袁峰,李晓辉,张明明,等.隐伏矿体三维综合信息成矿预测方法[J].地质学报,2014,88(4):630-640.
[10] Newman G A,Alumbaugh D L.Three-dimensional magnetotelluric inversion using non-linear conjugate gradients[J].Geophysical Journal International,2000,140(2):410-424.
[11] Apel M.From 3d geomodelling systems towards 3d geoscience information systems:Data model,query functionality,and data management[J].Computers &Geosciences,2006,32(2):222-229.
[12] 仇根根,方慧,钟清,等.长江中下游重要成矿区带及邻区大地电磁测深三维反演研究[J].地球物理学进展,2016,37(3):221-228.
[13] 郭坤一,陈国光,袁平,等.长江中下游地区深部矿勘查方法技术示范成果报告[R].南京:南京地质调查中心,2013:289-309.
[14] 李相民,仇慎平,尚通晓,等.江苏宁镇地区铁铜矿远景调查物探工作报告[R].南京:江苏省地质调查研究院,2011:32-41.

备注/Memo

备注/Memo:
*收稿日期:2017-07-04 修订日期:2017-08-31 责任编辑:谭桂丽
基金项目:国家重大科学仪器设备开发专项“大深度三维电磁探测技术工程化开发(编号:2011YQ050060)”项目资助。
第一作者简介:张景,1982年生,男,助理研究员,主要从事矿产资源勘查、深部探测及综合研究工作。
更新日期/Last Update: 2018-06-29