基于地质与重磁数据集成的栾川钼多金属矿区三维地质建模

王功文; 张寿庭; 燕长海; 宋要武; 陈天振; 李冬; 马振波

doi:10.3799/dqkx.2011.039

基于地质与重磁数据集成的栾川钼多金属矿区三维地质建模

doi: 10.3799/dqkx.2011.039

1.
中国地质大学地质过程与矿产资源国家重点实验室，北京 100083
2.
河南省地质调查院，河南郑州 450007
3.
河南省地球物理工程勘察院，河南郑州 450007

基金项目:

国家自然科学基金项目 40772157

国家自然科学基金项目 40972232

地质过程与矿产资源国家重点实验室科技部专项基金 GPMR0941

河南杜关-云阳地区钼铅锌多金属矿深部找矿示范研究项目 1212010881001

"十二·五"科技支撑项目 2010BAE00281-6

详细信息

作者简介:
王功文(1972-)，男，博士，副教授，主要从事矿产普查与勘探、矿产资源评价的科研和教学工作.E-mail: gwwang@cugb.edu.cn

中图分类号: P631.2
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出版历程
- 收稿日期: 2010-07-28
- 网络出版日期: 2021-11-10
- 刊出日期: 2011-03-01

3D Geological Modeling Based on Geological and Gravity-Magnetic Data Integration in the Luanchuan Molybdenum Polymetallic Deposit, China

1.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China
2.
Henan Institute of Geological Survey, Zhengzhou 450007, China
3.
Geophysical Engineering Investigation Institute of Henan Province, Zhengzhou 450007, China

摘要

摘要: 三维地质建模是当前国内外矿产资源勘查与评价研究的重要途径和热点.以栾川钼多金属矿区为例，针对研究区地质背景复杂、成矿地质条件多样性特征，开展了基于地质(岩性地层及其物性特征、地质体产状数据)与重磁正反演集成技术组合的三维地质模型建模研究，其研究内容为：(1)根据研究区地质背景和成矿条件，确定研究区矿床地质特征以及近地表地质体的空间属性特征；(2)利用重磁数据，在定性解译地质信息的基础上，开展二度半正演方法定量解译研究，并运用三维位场概率成像方法反演和解译深部地质体；(3)根据研究区地质与重磁反演解译资料综合分析，确定晚侏罗世斑岩岩体和控矿构造的时-空-因关系.研究结果表明，基于地质岩性属性特征的重磁正反演联合解译，能够综合利用地质体之间的物性差异、成因关系界定其几何形态，从而在三维环境中建立它们的时空关系，即三维地质模型，为研究区深部找矿、矿体定位预测以及金属矿产资源定量评价提供技术支撑和新途径
- 地质 /
- 重磁数据 /
- 正演 /
- 概率成像 /
- 地质建模 /
- 栾川多金属矿带
Abstract: 3D geological modeling is an important method and frontier of mineral resources exploration and assessment in the world. In this paper, a case study of the Luanchuan molybdenum polymetallic ore belt which has complicated geological setting and diversity metallogenic condition of geology, 3D geological modeling is combined geological knowledge with gravity and magnetic data integration. The research contents, methods, and results are summarized as the following aspects: (1) based on the geological setting and metallogenic conditions to determine the deposit characteristics of the study area and the near-surface geological object features of the spatial properties; (2) on basis of geological information in the qualitative interpretation using gravity and magnetic data, 2.5D forward interpretation and 3D imaging method of potential field inversion and interpretation of the probability of deep geological objects; (3) combination geological data with gravity and magnetic inversion datas to determine the space-time-genesis relationship among the Late Jurassic porphyry rock, ore, and ore mineralization favorable geological structures. The research results show that combination the geological characteristics including rock properties with inversion of gravity and magnetic interpretation to define geological object geometries, which is beneficial for geological prospecting, delineation of the quantitative evaluation of prospecting targets.
- geology /
- gravity and magnetic data /
- forward interpretation /
- probability inversion /
- geological modeling /
- Luanchuan polymetallic ore belt

HTML全文

图 1 研究区1∶10 000地质矿产分布

1.铁矿；2.钼矿；3.铜矿；4.铅锌矿；5.锌矿；6.钨钼矿；7.锌钼矿；8.铜铅锌矿；9.黄铁矿；10.震旦系陶湾群秋木沟组；11.震旦系陶湾群凤脉庙组；12.震旦系陶湾群三岔口组；13.震旦系宽坪岩群四岔口组；14.蓟县系栾川群鱼库组；15.蓟县系栾川群大红口组；16.蓟县系栾川群煤窑沟组；17.蓟县系栾川群南泥湖组；18.蓟县系栾川群三川组；19.蓟县系管道口群白术沟组；20.蓟县系管道口组群冯家湾组；21.蓟县系管道口群杜关组；22.蓟县系管道口群巡检司组；23.蓟县系管道口群龙家园组；24.花岗闪长斑岩；25.(变)辉长岩；26.正长斑岩；27.斜长角闪岩；28.地层界线；29.断层；30.全新统

Fig. 1. 1∶10 000 geological and mineral resources map of study area

下载: 全尺寸图片幻灯片

图 2 二度半正演重力场剖面

Fig. 2. 2.5D simultaneous inversion of gravity data showing computed gravity field models for the four profiles

下载: 全尺寸图片幻灯片

图 3 研究区重磁三维概率成像反演结果

a.磁测三维反演概率；b.重力三维反演概率；c.磁测三维反演概率剖面分析；d.重力三维反演概率剖面分析

Fig. 3. Gravity and magnetic sets of inversion 3D probability

下载: 全尺寸图片幻灯片

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