3D geological modeling of Jiaojia-Sanshandao fault zone in Jiaodong based on comprehensive geophysical constraints: metallogenic characteristics and implications for ore prospecting

HE Chunyan; WANG Yang; WANG Hongjun; CHEN Dalei; LIU Congwei; CHEN Hongjie

doi:10.12097/j.issn.1671-2552.2022.06.002

2022 Vol. 41, No. 6

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HE Chunyan, WANG Yang, WANG Hongjun, CHEN Dalei, LIU Congwei, CHEN Hongjie. 3D geological modeling of Jiaojia-Sanshandao fault zone in Jiaodong based on comprehensive geophysical constraints: metallogenic characteristics and implications for ore prospecting[J]. Geological Bulletin of China, 2022, 41(6): 936-945. doi: 10.12097/j.issn.1671-2552.2022.06.002

Citation:

HE Chunyan, WANG Yang, WANG Hongjun, CHEN Dalei, LIU Congwei, CHEN Hongjie. 3D geological modeling of Jiaojia-Sanshandao fault zone in Jiaodong based on comprehensive geophysical constraints: metallogenic characteristics and implications for ore prospecting[J]. Geological Bulletin of China, 2022, 41(6): 936-945. doi: 10.12097/j.issn.1671-2552.2022.06.002

3D geological modeling of Jiaojia-Sanshandao fault zone in Jiaodong based on comprehensive geophysical constraints: metallogenic characteristics and implications for ore prospecting

1.
Shandong Institute of Geophysical & Geochemical Exploration, Ji'nan 250013, Shandong, China
2.
New Technique Prospecting Department, BGP Inc., CNPC, Zhuozhou 072750, Hebei, China

More Information

Corresponding author: WANG Hongjun, hongjun@126.com

Received Date: 16 June 2021

Revised Date: 12 October 2021

Publish Date: 15 June 2022

Abstract

Abstract

Jiaojia and Sanshandao fault gold belt is a typical area where great breakthrough has been made in the deep prospecting of Jiaodong area, but the deep geological structure and the prospects for further prospecting are not clear.In this paper, a 3D comprehensive geological and geophysical model of the gold deposit belt is established, which is based on the geophysical 3D forward and inversion technique constrainted by high precision gravity and magnetic data and the CSAMT data.The model shows the deep 3D features of Neoarchean metamorphic rock series and Mesozoic granitoids and fault structures related to gold mineralization, in particular, it reveals the spatial variation characteristics of the attitude of the Jiaojia faults and Sanshandao faults, as well as the trend of their meeting.It provides important evidences for further deep prospecting and related theoretical research.The study shows that the 3D geological modeling method based on geophysical forward and inversion is suitable for the areas where the geophysical work is done more and the deep geological structure information is lacked.It can improve the reliability of the model to a certain extent and has a certain significance of popularization.
- gravity-magnetic 3D inversion /
- prior information constraint /
- geological modeling /
- Jiaodong gold deposis /
- deep prospecting

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