Application of the non-seismic geophysical method in the deep geological structure study of Benxi-Huanren area

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• 作者：Chong Peng ; Lin-Fu Xue ; Zheng-Hong Liu ; Hai-Yan Liu
• 关键词：Benxi ; Huanren area ; Longgang Block ; Liaoji paleo ; rift ; Gravity ; Aeromagnetic data ; FFT upward continuation
• 刊名：Arabian Journal of Geosciences
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：9
• 期：4
• 全文大小：2,993 KB
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• 作者单位：Chong Peng (1)
  Lin-Fu Xue (1)
  Zheng-Hong Liu (1)
  Hai-Yan Liu (2)
  
  1. College of Earth Sciences, Jilin University, Changchun, 130061, People’s Republic of China
  2. College of Geo-exploration Science and Technology, Jilin University, Changchun, 130061, People’s Republic of China
  
• 刊物类别：Earth and Environmental Science
• 出版者：Springer Berlin Heidelberg
• ISSN：1866-7538

文摘

Based upon 1:200,000 regional gravity and aeromagnetic data, gravity and aeromagnetic slice maps were obtained through fast Fourier transformation (FFT) upward continuation. A comparison between gravity and aeromagnetic slice maps at different depths combined with regional geological data and Magneto-Telluric sounding reveals the deep geological structure of Benxi-Huanren area and provides important information for study of the deep geological evolution process of Benxi-Huanren area. Yanshanian granitic pluton is widely distributed in this area and tends to be continuous toward depth. Significant metallogenic areas, such as Dataigou and Nanfen areas, lie above the buried granitic pluton. The Paleoproterozoic strata distribution area and the Archean strata distribution area have similar characteristics in terms of gravity anomaly. The iron-bearing formation in Anshan area is Archean supracrustal rock which was not engulfed by Archean granite. The thickness of Liaoji paleo-rift can be up to 10 km, whose lower part was intruded by Yanshanian granites. The basement of the Liaoji rift was remelted during granite intrusion in Yanshanian period.