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http://dx.doi.org/10.9719/EEG.2015.48.4.313

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

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)
Publication Information
Economic and Environmental Geology / v.48, no.4, 2015 , pp. 313-324 More about this Journal
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.
Keywords
3D geological modeling; Ugii Nurr Fe-Mn deposits; geological distribution; magnetic anomaly;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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