Examination Study of Geophysical Methods in Exploring Buried Bauxite Deposit in Southeast of Chongqing City: An Example from the Chepan Mining Area
详细信息
- 责任者：Li Hua (Chengdu Center ; China Geological Survey ; Chengdu 610081 ; China) ; Askar
- 刊名：Acta Geologica Sinica
- 出版年：2013
- 卷期：87(3)
- 关键词：铝土矿 ; bauxite deposit ; 电法勘探 ; electrical exploration ; 重庆 ; Chongqing
- 页码：p.384-392
- 图表：illus., 1 table, 32 refs.
- 分类号：1600
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
National mineral resources potential evaluation shows an abundant bauxite resource in southeast of Chongqing city. Therefore, it will be of great guiding significance to conduct geophysical exploration in this area. Based on fully understanding of metallogenic law and orebody characteristics in this area, this study sums up the preservation mode of bauxite, and then determines the spatial distribution of ore-bearing Liangshan Formation in order to find buried bauxite through electromagnetic sounding method. The Chepan mining area was selected to conduct two experiments in the same profile: controllable source (person workshop source) audio magnetotelluric sounding method (CSAMT) and high-frequency magnetotelluric sounding method (EH4). The data acquisition and data quality evaluation are introduced. Two kinds of electromagnetic sounding data were inversed by the two-dimensional continuum inversion of the human-computer interaction. Combined comparison analysis between borehole data and two inversed profiles of frequency-apparent resistivity, an inferred diagram of geophysical results has been outlined.
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