Fine interpretation of magnetic anomaly in the Banshigou iron ore deposit, Jilin Province
LIU Peng-Fei1, LIU Tian-You1, ZHU Pei-Min1, LU En-Lan2
1. Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074, China;
2. The Fourth Geological Survey of Jilin Province, Tonghua134001, China
The Banshigou iron deposit in Jilin is a large and typical Anshan-type iron ore deposit controlled by NS-, approximately WE- and NW-trending fold deformations with very complex synclinaria.The authors compared two interpretation methods of upward continuation and wavelet analysis, and reached the conclusion that the wavelet analysis can more accurately reveal the characteristics of the amphibolite iron-bearing formation of the upper Archaean Yangjiadian Formation in the Banshigou iron ore deposit.The results of wavelet analysis also demonstrate that the northern wing is arc-shaped while the southern wing is the second level anticline which continuously extends eastward.The lower anomaly in west-east direction on the southern wing better corresponds with the amphibolite iron-bearing formation of the upper Archaean Yangjiadian Formation in the Banshigou iron deposit, which indicates that the eastern wing has the potential of prospecting for iron ore resources.It is inferred that some iron ore layers may occur under the early Proterozoic Laoling Group and Zhengzhumen Group strata on the southern wing.Magnetic data were also processed by the interactive inversion of the 2.5/3 dimension, and drilling verification along No. 47 line coincides with the drilling results the authors forecast.
刘鹏飞, 刘天佑, 朱培民, 路恩兰. 吉林板石沟铁矿磁异常的精细解释[J]. 物探与化探, 2016, 40(2): 290-295.
LIU Peng-Fei, LIU Tian-You, ZHU Pei-Min, LU En-Lan. Fine interpretation of magnetic anomaly in the Banshigou iron ore deposit, Jilin Province. Geophysical and Geochemical Exploration, 2016, 40(2): 290-295.
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