黄土覆盖区地气测量有效性评价——以甘肃省通渭县陈贾村地区为例

doi:10.11720/wtyht.2020.1191

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Abstract

The regional metallogenic geological conditions of the study area are good. The Tongwei County is covered by Quaternary sediments. The traditional geochemical prospecting method is ineffective. In order to investigate the effectiveness of the geogas measurement method in loess-covered region, the authors selected the Chenjiacun area in Tongwei County to carry out effective experiment of the geogas measurement. The results revealed several geogas anomalies in the study area. The geogas anomalies are obvious, and the element correlation is good; in addition, they have good nesting and zoning relationships. Based on combining the geophysical data and verifying the conclusions in the field, the authors processed and analyzed the data. The geogas anomalies are in accord with the faults, mineralized bodies and geophysical anomalies in this area, and can clearly reflect the basic geological conditions of the loess-covered region. The result shows that the geogas measurement is effective in the loess-covered region, and it provides a new thinking for the prospecting in loess-covered region.

Key words： loess-covered region geogas measurement effectiveness geochemical exploration Tongwei County in Gansu Province

Received: 02 April 2019 Published: 24 June 2020

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	Qiang-Qiang LIN
	Qi ZHENG
	Yong-Hong SU

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Qiang-Qiang LIN,Qi ZHENG,Yong-Hong SU. Effectiveness evaluation of ground geogas measurement survey in a loess-covered area:A case study of Chenjiacun area in Tongwei County, Gansu Province[J]. Geophysical and Geochemical Exploration, 2020, 44(3): 533-539.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.1191 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I3/533

Geogas measurement sampling device

Analysis results of repeated samples

Blank element analysis of geogas measurement collector

Comparison of the results of Cd-Bi-Pb-Ni-Zn-Cu on the line 19 of the geogas repeats

The plane profile of the cumulative transformation of the mean values of Cu, Pb, Zn and Ni in the area of Chenjiacun area

Ground gas measurement test results of Chenjiacun line 26

Comprehensive profiles of geogas, induced polarization mid-ladder and induced polarization sounding in Chenjiacun area

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