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Geophysical and Geochemical Exploration  2023, Vol. 47 Issue (6): 1417-1424    DOI: 10.11720/wtyht.2023.0189
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Research on the application of the integrated gravity-magnetic-radioactive geophysical exploration method in the exploration of rare earth deposit in Weishan, western Shandong
LAN Jun1,2(), LI Zhao-Ling1,2, ZHANG Peng1,2, LI Zhi-Min1,2, LI De-Jian3, XING Nan1,2(), SUN Li4,5, YANG Yun-Tao1,2, XU Hong-Yan1,2, WANG Jian1,2, WANG Qiao-Yun6
1. No.5 Geological Team,Shandong Provincial Bureau of Geology and Mineral Resources, Tai'an 271000, China
2. Academician Workstation for Mineralization Research and Exploration of Rare Earth Element Deposits of Shandong Province, Tai'an 271000, China
3. Shandong Weishan Lake Rare Earth Co., Ltd., Jining 277600, China
4. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037,China
5. Key Laboratory of Mineralization and Resource Evaluation, Ministry of Natural Resources, Beijing 100037, China
6. Shandong Institute of Geological Survey, Jinan 250014,China
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Abstract  

Since the periphery of the Xishan rare earth deposit in Weishan County, western Shandong is mostly covered by the Quaternary strata, single geophysical exploration methods are ineffective in searching for rare earth elements in this area. To establish a geological-geophysical prospecting model for deep rare earth prospecting in this area, a combination of exploration techniques and methods suitable for the deep exploration of rare earth deposits in this area were selected through multiple geophysical exploration technology experiments on the known geological profiles. The distribution range of the underground Mesozoic Xishan alkaline complex was roughly determined through gravity survey and high-precision magnetic survey. The ore body outcrop was delineated through ground-based gamma spectrometry, and the deep ore body characteristics were revealed through drilling. Finally, this study developed an integrated geophysical exploration method including gravity-magnetic joint delineation of rock masses, radioactive positioning for ore body outcrops, and deep drilling. By using this exploration model, one super-large rare earth deposit was discovered in this area, providing a reference for the exploration of rare earth deposits in the surrounding area.

Key wordsgravity and magnetic exploration      radioactive exploration      rare earth      Weishan      rock mass     
Received: 04 May 2023      Published: 23 January 2024
:  P631  
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Jun LAN
Zhao-Ling LI
Peng ZHANG
Zhi-Min LI
De-Jian LI
Nan XING
Li SUN
Yun-Tao YANG
Hong-Yan XU
Jian WANG
Qiao-Yun WANG
Cite this article:   
Jun LAN,Zhao-Ling LI,Peng ZHANG, et al. Research on the application of the integrated gravity-magnetic-radioactive geophysical exploration method in the exploration of rare earth deposit in Weishan, western Shandong[J]. Geophysical and Geochemical Exploration, 2023, 47(6): 1417-1424.
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