相山矿田游坊地区地电提取找矿预测

doi:10.11720/wtyht.2021.1470

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Abstract

In order to make a breakthrough in prospecting in the Youfang area of the Xiangshan ore field, the authors carried out geoelectric extraction and surveying in this area for deep prospecting prediction. It is found that the anomalies are obviously controlled by the faults, and are mainly distributed along the ore-controlling faults and the intersection of the faults. Cluster analysis and factor analysis reveal that there is a significant correlation between the trace elements, thus forming the corresponding element combinations: F1 factor (Ti、V、Mo、Th、U), F2 factor (As、Pb、Sb), and F3 factor (Co、Ni). The spatial distribution of uranium-thorium ratios shows a significant positive correlation with the estimated base depth of AMT, controlled by volcanic rock thickness. The authors synthesized the abnormal features of geoelectrically extracted elements and the mineralization regularity of the Xiangshan ore field, established a comprehensive geological-geoelectrochemical prospecting model, and delineated two corresponding targets in the study area, of which No.1 target area has good prospecting prospect.

Key words： Xiangshan uranium ore geo-electric extraction characteristics of anomaly

Received: 23 September 2020 Published: 21 December 2021

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Corresponding Authors: OUYANG Fei E-mail: 945087837@qq.com;ouyfglut@qq.com

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	Rui TANG
	Fei OUYANG
	Xian-Rong LUO
	Chao-Jie ZHENG
	Guo-Dong TANG
	Pan-Feng LIU
	Ye-Lei CAI
	Xiao-Xiao YANG

Cite this article:

Rui TANG,Fei OUYANG,Xian-Rong LUO, et al. The prediction of electrochemical prospecting in Youfang area of the Xiangshan orefield[J]. Geophysical and Geochemical Exploration, 2021, 45(6): 1425-1438.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.1470 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I6/1425

25])
1—upper Cretaceous Guifeng group; 2—lower Cretaceous Ehuling formation; 3—lower Cretaceous Daguding formation; 4—upper Triassic Anyuan formation; 5—lower Carboniferous Huashanling formation; 6—Neoproterozoic; 7—subporphyritic granite; 8—granite; 9—real and inferred faults; 10—Gan-Hang fault zone; 11—Gan-Hang structural belt range; 12—red fault basin; 13—volcanic basin; 14—uranium deposit; 15—Xiangshan ore field; 16—research area
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Outline of geological structure in Xiangshan basin(revised according to Dong Bao-ping^[25])
1—upper Cretaceous Guifeng group; 2—lower Cretaceous Ehuling formation; 3—lower Cretaceous Daguding formation; 4—upper Triassic Anyuan formation; 5—lower Carboniferous Huashanling formation; 6—Neoproterozoic; 7—subporphyritic granite; 8—granite; 9—real and inferred faults; 10—Gan-Hang fault zone; 11—Gan-Hang structural belt range; 12—red fault basin; 13—volcanic basin; 14—uranium deposit; 15—Xiangshan ore field; 16—research area

Geological map of Youfang study area

27])
">

The brief diagram of the geochemical extraction migration model(revised according to Luo Xian-rong^[27])

29])
1—Quaternary; 2—lower Cretaceous lower Ehuling; 3—upper Cretaceous lower Ehuling; 4—lower Cretaceous lower Daguding formation; 5—upper Cretaceous lower Daguding formation; 6—Neoproterozoic; 7—subporphyritic granite; 8—uranium ore body; 9—void; 10—fault; 11—point and point number; 12—borehole and number
">

The comprehensive geological geodesic anomaly profile of Line 64(Revised according to Wang dong^[29])
1—Quaternary; 2—lower Cretaceous lower Ehuling; 3—upper Cretaceous lower Ehuling; 4—lower Cretaceous lower Daguding formation; 5—upper Cretaceous lower Daguding formation; 6—Neoproterozoic; 7—subporphyritic granite; 8—uranium ore body; 9—void; 10—fault; 11—point and point number; 12—borehole and number

Statistical parameters of geo-electric chemistry elements content

Box diagram of element content after logarithmic conversion

Cluster analysis tree

Variable correlation coefficient matrix of factor analysis

元素	F1	F2	F3
Ti	$0.740 -$	0.363	0.371
V	$0.894 -$	0.193	0.318
Co	0.378	0.005	$0.782 -$
Ni	0.205	0.220	$0.864 -$
As	0.529	$0.797 -$	0.161
Mo	$0.622 -$	0.539	0.209
Sb	-0.003	$0.900 -$	0.143
Pb	0.234	$0.883 -$	0.022
Th	$0.935 -$	0.140	0.185
U	$0.911 -$	0.132	0.231
方差贡献率/%	39.579	27.690	17.746
累计方差贡献率/%	39.579	67.268	85.015

Rotated orthogonal factors and cumulative variance contributions

Contents of various elements for classifying various abnormal zones in the xiangshan,Jiangxi Province

Anomaly plan of single element extraction and w(U)/w(Th) ratio plan of geoelectricity extraction in Youfang area
1—Neoproterozoic; 2—lower Cretaceous Ehuling formation; 3—lower Cretaceous Daguding formation; 4—subporphyritic granite; 5—geoelectric survey network; 6—fault structure; 7—geological boundary; 8—anomaly inner zone; 9—anomaly middle zone; 10—anomaly outer zone; 11—place name; 12—AMT inferred basement depth

The combination of elements in the youfang area
1—Neoproterozoic; 2—lower Cretaceous Ehuling formation; 3—lower Cretaceous Daguding formation; 4—subporphyritic granite; 5—geoelectric survey network; 6—fault structure; 7—geological boundary ; 8—anomalous inner zone; 9—anomalous middle zone; 10—anomalous outer zone; 11—place name

Geological-geoelectrochemical comprehensive prospecting model
1—Neoproterozoic; 2—lower Cretaceous Ehuling formation; 3—secondary porphyritic granite; 4—fault structure; 5—geological boundary; 6—ore body; 7—unconformity contact

A map showing predicted prospecting targets in the Xiangshan deposit
1—Neoproterozoic; 2—lower Cretaceous Ehuling formation; 3—lower Cretaceous Daguding formation; 4—subporphyritic granite; 5—geoelectric survey network; 6—fault structure; 7—geological boundary; 8—AMT inferred basal depth; 9—No.2 target area; 10—No.1 target area; 11—place name

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