热带雨林区地质填图方法技术实践

doi:10.11720/wtyht.2022.1217

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Abstract

Tropical rain forest areas feature strong chemical weathering, thick weathered layers, developed vegetation, and less exposed bedrock. It is one of the essential geological survey contents of tropical rainforest areas to obtain geological and mineral information of coverage areas by effectively utilizing overburden layers. This paper summarizes the geological and mineral information detection methods employed in exploring the geological and mineral exploration technologies in the tropical rainforest area in the Nanhanzhai experimental area, Mengman town. In detail, the methods were dominated by soil geochemical survey and sampling drill and combined geological route survey. The geological boundaries obtained using these methods roughly coincide with 1∶50,000 geological maps, and three integrated anomalies with certain prospecting prospects were delineated using these methods. This study can serve as a reference for preparing the technical guide to geological mapping methods suitable for tropical rainforest areas.

Key words： tropical rain forest mineral exploration soil geochemical survey sampling drill

Received: 16 April 2021 Published: 28 June 2022

ZTFLH:

P632

Corresponding Authors: HE Cheng-Zhong E-mail: m1850731403@163.com;443220880@qq.com

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	Yi-Qi MA
	Cheng-Zhong HE
	Xin JIANG
	Chao-Lei YANG

Cite this article:

Yi-Qi MA,Cheng-Zhong HE,Xin JIANG, et al. Technoligical practice of geological mapping method for tropical rain forest areas[J]. Geophysical and Geochemical Exploration, 2022, 46(2): 352-361.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2022.1217 OR https://www.wutanyuhuatan.com/EN/Y2022/V46/I2/352

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Regional tectonic(a) and regional tectonic location(b) in the study area(modified according to [28])

Characteristic value of element content in soil B layer in the study area

Geological-geochemical joint section of line 18 in the study area

Comparison of the effect of geological mapping in the study area
a—1∶200 000 Geological map of the study area; b—1∶50 000 Geological map of the study area

Fig.3)
a—geological map of the study area;b—F1 factor score map;c—Th geochemical map;d—Y geochemical map;e—U geochemical map;f—W geochemical map
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Geology-geochemical comparison of the study area(the legend is the same as Fig.3)
a—geological map of the study area;b—F1 factor score map;c—Th geochemical map;d—Y geochemical map;e—U geochemical map;f—W geochemical map

Elements cluster analysis diagram of study area

Fig.3)
a—geological map of the study area; b—F2 factor score map; c—F5 factor score map;d—Au-As-Ag-Pb-Sb-Hg combined anomaly map
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Prospecting effect map of study area(the legend is the same as Fig.3)
a—geological map of the study area; b—F2 factor score map; c—F5 factor score map;d—Au-As-Ag-Pb-Sb-Hg combined anomaly map

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