Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
권호 표지
DOI QR코드

DOI QR Code

A Comparative Analysis between 3D Geological Modeling and Magnetic Data of Fe-Mn Ore in Ugii Nuur, Mongolia

몽골 우기누르 철-망간 부존 지역의 3차원 지질모델과 자력탐사 결과의 비교분석

  • Lee, Jeong-a (Department of Astronomy, Space Science & Geology, Chungnam National University) ;
  • Yu, Jaehyung (Department of Geology & Earth Environmental Sciences, Chungnam National University) ;
  • Park, Gyesoon (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Bum han (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, In-Joon (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Heo, Chul-Ho (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
  • 이정아 (충남대학교 우주.지질학과) ;
  • 유재형 (충남대학교 지질환경과학과) ;
  • 박계순 (한국지질자원연구원 광물자원연구본부) ;
  • 이범한 (한국지질자원연구원 광물자원연구본부) ;
  • 김인준 (한국지질자원연구원 광물자원연구본부) ;
  • 허철호 (한국지질자원연구원 광물자원연구본부)
  • Received : 2015.04.26
  • Accepted : 2015.07.07
  • Published : 2015.08.28
Download PDF
⟨ Previous Next ⟩

Abstract

This study constructed a 3D geological model for Uggi Nuur Fe-Mn mineralization zone in Mongolia, and the 3D geological distribution is cross-analyzed with magnetic anomaly distribution to figure out relationship between ore zone and subsurface geology. As a result of 4 step 3D modeling procedures including geological cross section, surface modeling, foliation modeling and solid modeling, the geology of the both study area is bordered by faults in NW direction with Munguntessj formation being located in the west side of the fault while Yashill formation is located on the other side of the fault. Moreover, the strike direction of foliation in the both formation shows same directional pattern with the NW faults. The magnetic anomaly distribution reveals that higher anomaly values are concentrated to near the ground surface. The analyses of 3 dimensional distribution between subsurface geology and magnetic anomaly indicates that higher anomaly is mainly distributed over the Munguntessj formation as a elongated lens bodies whereas the magnetic anomaly is evenly found in the both of Munguntessj formation and Yashill formation in the study area 2. It infers that volcanic activities associated mineralization occurred during silurian period, and the mineralized zone is thought to be realigned along the geological structures caused by later stage tectonic activities.

본 연구는 몽골 아르항가이 주 남동부 지역에 위치하는 우기누르 철-망간 광화대에 대해 3차원 지질모델을 구축하고 자력탐사와 비교 분석하여 지질 내 광체의 분포 특성을 유추하였다. 단면도 구축, Surface 모델링, 엽리 모델링 및 솔리드 모델링의 4단계로 3차원 지질모델을 구축한 결과, 연구지역 1과 2는 북서방향의 단층을 경계로 서부에는 문군체층이 동부에는 야실층이 분포하며 지질암체 내 표현된 엽리의 주된 주향 방향은 북서방향을 보이며 이러한 경향성은 지질경계를 이루는 북서방향 단층과의 유사하다. 연구지역의 자력탐사 자료를 이상치 분포특성에 따라 살펴본 결과, 자화율의 임계값이 낮을수록 이상치 분포대가 수직적인 분포를 보이는 경향이 관찰되나 임계값이 높아짐에 따라 이상대의 분포가 점차 지표 및 이와 인접한 천부에 집중된다. 자력탐사 이상대의 분포와 지질분포를 3차원 상에서 비교분석한 결과, 연구지역 1에서 자력탐사 이상대의 분포가 주로 북서방향 단층의 서부에 분포하는 문군체층에 신장된 형태의 렌즈상으로 분포하나, 연구지역 2의 경우 문군체층과 야실층에 균등한 분포를 보인다. 3차원 지질모델과 자력탐사 분포 특성을 비교분석 결과를 살펴보았을 때 본 연구지역에서는 실루리아기에 광화작용과 연관된 화산활동이 있었으며, 이 후 발생한 구조운동에 의해 광화대가 구조선을 따라 재배열 된 것으로 생각된다.

Keywords

References

  1. Bae, J.H., Jo, Y.T. and Park, J.M. (2014) Export and Import Tendency of strategic mineral resources. Trend Analysis, Korea Customs and Trade Development Institute, v.87, p.1-17.
  2. Dejidmaa, G., Bujinlkham, B., Eviihuu, A. Enkhtuya, B., Ganbaatar, T., Moenkh-Erdene, N. and Oyuntuya, N. (2001) Distribution Map of Deposits and Occurrences in Mongolia (at the Scale 1:1,000,000). Mineral Resources Authority of Mongolia, Ulaanbaatar, 280p.
  3. Eviikhuu, A. and Oyuntuya, N. (2006) Geological map of Mongolia, Khangai-Khentii area L-48-I, scale 1:200000. Geological Information center of Mineral resource authority of Mongolia
  4. Korea Institute of Geoscience and Mineral Resources (KIGAM) (2012) Potential Evaluation and Exploration of Overseas Mineral Resources, Ministry of Knowledge Economy, GP2010-021-2012(3), 641p.
  5. Kwak J.Y., Choi, J.B. and Cho H.G. (2013) 3D Modeling For Resources Estimation of Ilmenite Deposits in Jikjeon-Ri, Hadong Korea. Journal of Mineralogical Society of Korea, v.26(4), p.285-297. https://doi.org/10.9727/jmsk.2013.26.4.285
  6. Lee, B.H., Park, G., Kim, I.J., Lee, G., Heo, C.H. and Koh, S.M. (2012) Characteristics of Fe-Mn mineralization in Ugii Nuur and Tamir Gol, Mongolia. Journal of Mineralogical Society of Korea, v.25, p.313-322 https://doi.org/10.9727/jmsk.2012.25.4.313
  7. Lee, J.Y. (2011) Development Situation of Mineral Resources in Mongolia and Investment Expanding Ways. Korea Institute for International Economic Policy, Seoul, p.55-80.
  8. McQueen, K.G. (1987) Deformation and remobilization in some Western Australian nickel ores. Ore Geology Reviews, v.2(1), 269-286. https://doi.org/10.1016/0169-1368(87)90032-1
  9. ParadigmC (2013) SKUA-GOCAD User Guide
  10. Park, G., Lee, B.H., Kim, I.J. and Heo, C.H. (2014) Distribution of Fe-Mn Ore in Ugii Nuur, Mongolia Using Magnetic data. Korean Earth Science Society, v.35(6), p.412-421. https://doi.org/10.5467/JKESS.2014.35.6.412
  11. Rodionov, S., Obolenskiy, A., Distanov, E., Badarch, G., Dejidmaa, G., Hwang, D.H., Khanchuk, A., Ogasawara, M., Nokleberg, W., Parfenov, L., Prokopiev, A., Seminskiy, Z., Alexander, P., Smelov, A., Yan, H., Birul'kin, G., Davydov, Y., Fridovskiy, V., Gamyanin, G., Gerel, O., Kostin, A., Letunov, S., Li, X., Nikitin, V., Sudo, S., Sotnikov, V., Spiridonov, A., Stepanov, V., Sun, F., Sun, J., Sun, W., Supletsov, V., Timofeev, V., Tyan, O., Vetluzhskikh, V., Wakita, K., Yakovlev, Y. and Zorina, L. (2003) Preliminary Metallogenic Belt and Mineral Deposit Maps for Northeast Asia, Open-File Report 03-204. USGS, 104p.
  12. Son, Y.J. and Kim, J.D. (2012) Mine Haulage System Design for Reopening of Yangyang Iron Mine using 3D Modelling. Tunnel & Underground Space, v.22(6), p.412-428. https://doi.org/10.7474/TUS.2012.22.6.412
  13. Zhang, Y., Sun, F., Li, B., Huo, L. and Ma, F. (2014) Ore textures and remobilization mechanisms of the Hongtoushan copper-zinc deposit, Liaoning, China. Ore Geology Reviews, v.57, p.78-86. https://doi.org/10.1016/j.oregeorev.2013.09.006