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

  • Chong Peng
  • Lin-Fu Xue
  • Zheng-Hong Liu
  • Hai-Yan Liu
Original Paper
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Abstract

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.

Keywords

Benxi-Huanren area Longgang Block Liaoji paleo-rift Gravity Aeromagnetic data FFT upward continuation 
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Notes

Acknowledgments

We thank Arabian Journal of Geosciences Editor Prof. Abdullah M. Al-Amri and an anonymous reviewer for their helpful reviews and suggestions. This research is funded by a pilot project “Deep Geological Survey of Benxi-Linjiang area” (Project No. 1212011220247), from 3D geological mapping and deep geological survey of China Geological Survey.

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Copyright information

© Saudi Society for Geosciences 2016

Authors and Affiliations

  • Chong Peng
    • 1
  • Lin-Fu Xue
    • 1
  • Zheng-Hong Liu
    • 1
  • Hai-Yan Liu
    • 2
  1. 1.College of Earth SciencesJilin UniversityChangchunPeople’s Republic of China
  2. 2.College of Geo-exploration Science and TechnologyJilin UniversityChangchunPeople’s Republic of China

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