因子分析在地球化学分区中的应用及指示意义——以山东省莒县—五莲地区1:5万水系沉积物测量数据为例

doi:10.11720/wtyht.2025.2505

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Abstract

This study investigated data from a 1:50,000 stream sediment survey in the Juxian-Wulian area, Shandong Province using factor analysis. By extracting eight representative factors, this study identified element assemblage types. Then, this study performed geochemical zoning based on the factor scores and discussed the relationships between various sub-zones and their geological background. Based on the geochemical zoning results, as well as geological conditions for mineralization, this study determined favorable geological bodies and prospecting targets and discovered new prospecting clues.The most significant mineralization combination in this area is Au-Cu-Ag-Mo-Bi, followed by Pb-Zn; The V-Ti-Co-Mn combination and Ni-Cr combination can serve as exploration elements, indicating that there may be favorable mineralization mechanisms in the center and deep parts of the combination anomaly zone. Finding volcanic craters and hidden explosive breccia tubes in the distribution areas of volcanic rocks in this region or area is an important direction for mineral exploration; In the area of Shichang Fangzi Village in the eastern part of the research area, there is a comprehensive zoning with a F₂-F₄-F₁ three factor combination model. The Mesozoic Buliu sequence and Weideshan sequence rock bodies are favorable geological bodies for mineralization, and the NE trending structural belt is a favorable place for mineralization, indicating the direction of prospecting.

Key words： factor analysis geochemical zoning stream sediment metallogenic prediction prospecting target

Received: 20 November 2023 Published: 22 April 2025

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	Wen-Dong LU
	Bin SUN
	Guang-Jie LI
	Wei WEI
	Xiao-Xing XIA
	Bing-Lei PAN
	Qing SHA
	Xiao-Hong LYU
	Yuan-Chun LI
	Na QIAO

Cite this article:

Wen-Dong LU,Bin SUN,Guang-Jie LI, et al. Application of factor analysis in geochemical zoning and its implications: A case study of 1:50,000 stream sediment survey in the Juxian-Wulian area, Shandong Province[J]. Geophysical and Geochemical Exploration, 2025, 49(2): 411-421.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2025.2505 OR https://www.wutanyuhuatan.com/EN/Y2025/V49/I2/411

7]) and regional geological map of the study area (b)
1—Quaternary system; 2—upper Cretaceous-Paleocene series Wangshi Group; 3—lower Cretaceous Dasheng Group; 4—lower Cretaceous Qingshan Group; 5—lower Cretaceous Laiyang Group; 6—Cambrian-Ordovician system; 7—Qingbaikou-Sinian Tumen Group; 8—middle Paleozoic Yishui Rock Group; 9—early Cretaceous Laoshan sequence; 10—early Cretaceous Dadian sequence; 11—early Cretaceous Weideshan sequence; 12—early Cretaceous Buliu sequence; 13—late Jurassic Linglong sequence; 14—late Triassic Liulinzhuang sequence; 15—Neoproterozoic Tieshan sequence; 16—Neoproterozoic Yuejishan sequence; 17—Neoproterozoic Suoluoshu sequence; 18—Neoproterozoic Rongcheng sequence; 19—Mesoproterozoic Haiyangsuo sequence; 20—Newarchean Hongmen sequence; 21—Newarchean Yishui sequence; 22—Neoarchean Taishan sequence; 23—early Cretaceous pyroxene diorite; 24—early Cretaceous andesite; 25—early Cretaceous diorite porphyry; 26—early Cretaceous Coarse andesite vein; 27—diorite porphyry vein; 28—granite porphyry vein; 29—syenite porphyry vein; 30—diorite vein; 31—Quartz porphyry vein; 32—diabase veins; 33—Shagou basalt; 34—compressive torsional fracture/fracture with unknown properties/tensile torsional fracture; 35—speculation of fracture; 36—geological boundary; 37—gold mine(point); 38—copper mine(point); 39—pyrite; 40—lead ore occurrence; 41—zinc ore occurrence; 42—multi metallic mineral occurrences; 43—lead zinc mineral occurrences; 44—iron ore deposit; 45—silver mining site; 46—potassium ore occurrence; 47—rare earth mineral occurrences; 48—scope of the research area
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Geotectonic background map of the study area (a, modified by Zhang^[7]) and regional geological map of the study area (b)
1—Quaternary system; 2—upper Cretaceous-Paleocene series Wangshi Group; 3—lower Cretaceous Dasheng Group; 4—lower Cretaceous Qingshan Group; 5—lower Cretaceous Laiyang Group; 6—Cambrian-Ordovician system; 7—Qingbaikou-Sinian Tumen Group; 8—middle Paleozoic Yishui Rock Group; 9—early Cretaceous Laoshan sequence; 10—early Cretaceous Dadian sequence; 11—early Cretaceous Weideshan sequence; 12—early Cretaceous Buliu sequence; 13—late Jurassic Linglong sequence; 14—late Triassic Liulinzhuang sequence; 15—Neoproterozoic Tieshan sequence; 16—Neoproterozoic Yuejishan sequence; 17—Neoproterozoic Suoluoshu sequence; 18—Neoproterozoic Rongcheng sequence; 19—Mesoproterozoic Haiyangsuo sequence; 20—Newarchean Hongmen sequence; 21—Newarchean Yishui sequence; 22—Neoarchean Taishan sequence; 23—early Cretaceous pyroxene diorite; 24—early Cretaceous andesite; 25—early Cretaceous diorite porphyry; 26—early Cretaceous Coarse andesite vein; 27—diorite porphyry vein; 28—granite porphyry vein; 29—syenite porphyry vein; 30—diorite vein; 31—Quartz porphyry vein; 32—diabase veins; 33—Shagou basalt; 34—compressive torsional fracture/fracture with unknown properties/tensile torsional fracture; 35—speculation of fracture; 36—geological boundary; 37—gold mine(point); 38—copper mine(point); 39—pyrite; 40—lead ore occurrence; 41—zinc ore occurrence; 42—multi metallic mineral occurrences; 43—lead zinc mineral occurrences; 44—iron ore deposit; 45—silver mining site; 46—potassium ore occurrence; 47—rare earth mineral occurrences; 48—scope of the research area

Bartlett sphericity test and KMO test

Factor analysis eigenvalues and cumulative variance contribution rate of the study area

Factor analysis orthogonal rotation factor load matrix

Geochemical subdivisions in the study area

Geological sketch map (a) and factor analysis contrast map (b) of Xiabuluogu area in the study area
1—Quaternary system; 2—lower Cretaceous Dasheng Group; 3—lower Cretaceous Qingshan Group; 4—lower Cretaceous Laiyang Group; 5—early Cretaceous Dadian sequence; 6—late Triassic Liulinzhuang sequence; 7—Neoproterozoic Yuejishan sequence; 8—granite porphyry vein; 9—syenite porphyry vein; 10—monzonitic porphyry vein; 11—compression torsion fracture/tension torsion fracture/fracture of unknown nature; 12—volcanic institutions; 13—F₁(Co-Mn-Ti-V) partition; 14—F₂ (Au-Ag-Mo-Cu-Bi) partition; 15—F₃(Cr-Ni) partition; 16—F₄(Pb-Zn) zoning; 17—F₇(Hg) zone; 18—mixed factor zoning; 19—copper mine; 20—iron ore point; 21—potash occurrences

F₂-F₄-F₁ factor metallogenic model of Au-Cu and its peripheral polymetallic deposits in Qibaoshan(a), and F₂-F₄-F₁ factor metallogenic prediction map in Shichang-Fangzicun area (b)
1—F₁ (Co-Mn-Ti-V) partition; 2—F₂ (Au-Ag-Mo-Cu-Bi) partition; 3—F₃ (Cr-Ni) partition; 4—F₄ (Pb-Zn) zoning; 5—F₆ (Sn) partition; 6—F₂+F₄ partition; 7—mixed factor partition; 8—Qibaoshan gold copper mine; 9—Qibaoshan peripheral silver mine; 10—Qibaoshan peripheral lead zinc mine; 11—copper mine; 12—polymetallic occurrences; 13—pyrite; 14—iron ore point

Geological sketch map (a) and factor analysis contrast map (b) of the eastern part of Lingyang town in the study area
1—Quaternary system; 2—lower Cretaceous Qingshan Group; 3—lower Cretaceous Laiyang Group; 4—early Cretaceous Dadian sequence; 5—early Cretaceous Buliu sequence; 6—syenite porphyry vein; 7—monzonitic porphyry vein; 8—diorite porphyrite vein; 9—compression torsion fracture/tension torsion fracture/fracture of unknown nature; 10—F₁ (Co-Mn-Ti-V) zoning; 11—F₃ (Cr-Ni) partition; 12—F₄(Pb-Zn) zoning; 13—F₇ (Hg) zone; 14—F₈ (W) zone; 15—mixed factor zoning; 16—lead ore occurrence; 17—iron ore point

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