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Three-dimensional prospectivity mapping of skarn-type mineralization in the southern Taebaek area, Korea

  • Changwon Lee
  • Hyun-Joo Oh
  • Seong-Jun Cho
  • You Hong Kihm
  • Gyesoon Park
  • Seon-Gyu Choi
Article

Abstract

The integration of three-dimensional (3D) exploration data is important for targeting deep-seated mineral deposits. This paper presents a methodology for 3D mineral prospectivity modeling at the regional scale based on a knowledge-driven method. A mineral prospectivity map of skarn-type mineralization was developed for the southern region of the Taebaek basin in Korea. Criteria generated using the skarn mineral system concept and 3D exploration maps were extracted from the 3D geological model, and then were assigned weights and scores using expert knowledge. The prospectivity map was prepared using a multiclass index overlay method, in which 3D exploration criteria were integrated for the study area. The prospectivity model was quantitatively validated by comparisons with 46 ore body voxels from drill holes in six known historical skarn-type deposits. The success rate for the prospectivity model was 89.04%. This high value appears to reflect the importance of the weighting and scoring process used for the exploration criteria. It is believed that the proposed approach provides a valuable guide to the identification of new deposit-scale, deep-seated exploration target zones.

Key words

exploration criteria multiclass index overlay prospectivity mapping Taebaek 3D geological model 

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Copyright information

© The Association of Korean Geoscience Societies and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Changwon Lee
    • 1
  • Hyun-Joo Oh
    • 2
    • 6
  • Seong-Jun Cho
    • 1
  • You Hong Kihm
    • 3
  • Gyesoon Park
    • 4
  • Seon-Gyu Choi
    • 5
  1. 1.Mineral Resources Development Research CenterKorea Institute of Geoscience and Mineral Resources (KIGAM)DaejeonRepublic of Korea
  2. 2.Geo-Environmental Hazards & Quaternary Geology Research CenterKorea Institute of Geoscience and Mineral Resources (KIGAM)DaejeonRepublic of Korea
  3. 3.Center for HLW Geological DisposalKorea Institute of Geoscience and Mineral Resources (KIGAM)DaejeonRepublic of Korea
  4. 4.Convergence Research Center for Development of Mineral ResourcesKorea Institute of Geoscience and Mineral Resources (KIGAM)DaejeonRepublic of Korea
  5. 5.Department of Earth and Environmental Sciences, College of ScienceKorea UniversitySeoulRepublic of Korea
  6. 6.Geo-Environmental Hazards & Quaternary Geology Research CenterKorea Institute of Geoscience and Mineral Resources (KIGAM)DaejeonRepublic of Korea

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