3D inversion imaging of self-potential current source induced by mineral polarization

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI:10.1016/S1003-6326(24)66725-7

Li-juan ZHANG , Yi-an CUI , Jing XIE , Jian-xin LIU

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引用次数: 0

Abstract

An innovative gradient inversion approach employing the natural element method within the framework of least square regularization was proposed to enhance the quantitative interpretation of self-potential (SP) data originating from mineral polarization. The results indicated that the natural element method effectively addressed the challenge of subdividing complex resistivity models and aided in the accurate forward calculation of SP. By applying this approach to synthetic SP data and lab-measured SP data associated with redox electrochemical half-cell reactions of iron−copper metal blocks within the geobattery model, the 3D fine structure of buried orebody models was successfully reconstructed and the spatial distribution of SP current sources was mapped. This study significantly contributes to understanding the quantitative relationship between the polarization process of metal deposits and their corresponding SP responses and provides a valuable reference for delineating metal deposits in both terrestrial and marine environments through SP surveys.

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矿物极化诱导自电位电流源三维反演成像

提出了一种基于最小二乘正则化框架的自然元法梯度反演方法，提高了矿物极化自电位（SP）数据的定量解释。结果表明，自然元素法有效地解决了复杂电阻率模型细分的挑战，并有助于精确的正演计算SP。通过将该方法应用于合成SP数据和与地电池模型中铁-铜金属块氧化还原电化学半电池反应相关的实验室测量SP数据，成功重建了隐伏矿体三维精细结构模型，绘制了SP电流源的空间分布图。该研究有助于了解金属矿床极化过程与其对应的SP响应之间的定量关系，为通过SP测量圈定陆地和海洋环境中的金属矿床提供了有价值的参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.