Volume 25 Issue S1
May  2019
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Article Navigation >  Journal of Geomechanics  > 2019  >  25(S1): 5-9
HUANG Xi, ZHENG Yi, CHEN Binghui, et al., 2019. APPLICATION OF PALEOMAGNETISM IN ORE DEPOSIT STUDY. Journal of Geomechanics, 25 (S1): 5-9. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.002
Citation: HUANG Xi, ZHENG Yi, CHEN Binghui, et al., 2019. APPLICATION OF PALEOMAGNETISM IN ORE DEPOSIT STUDY. Journal of Geomechanics, 25 (S1): 5-9. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.002
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APPLICATION OF PALEOMAGNETISM IN ORE DEPOSIT STUDY

doi: 10.12090/j.issn.1006-6616.2019.25.S1.002
  • 1.

    School of Earth Science and Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong, China

  • 2.

    Guangdong Provincial Key Lab of Geological Processes and Mineral Resource Survey, Guangzhou 510275, Guangdong, China

  • 3.

    Guangdong Provincial Key Lab of Geodynamic and Geohazards, School of Earth Science and Engineering, Guangzhou 510275, Guangdong, China

  • 4.

    Southern Laboratory of Ocean Science and Engineering, Zhuhai 519000, Guangdong, China

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  • Published: 2019-05-01
    Abstract
  • Paleomagnetism is a geological methodology focusing on the magnetic parameters and their variation regulation of geomagnetic field during the Earth history. The core is several magnetic minerals in rocks. By measuring preserved remanence and direction, the initial magnetic strength and direction in rock-forming process can be calculated. It constrains paleomagnetic pole position, rock-forming age and geodynamics background. Ore, a special kind of rock in earth evolution, determines source-transport-storage-preserve-change in deposit-forming process by paleomagnetism study. The present study on paleomagnetism of ore deposits mainly focuses on two aspects: (1) Demagnetization parameters of minerals are used to determine the age of magnetization at the time of formation (dating of the ore deposit) (2) Tectonic stress field changes after the formation of the ore deposit are obtained through magnetic fabric data(Ore deposit preservation changes).More importantly, geological facts are the foundation of paleomagnetism of ore deposits. Due to the great influence of geological occurrence and wall-rock alteration on magnetic parameters, caution must be taken in the processing of geomagnetic data of mineral deposits, and the mutual verification with magnetic stratigraphy can make it possible to obtain valuable magnetic parameters, thus providing effective evidence for restricting the genesis of mineral deposits.

     

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