北秦岭华阳川地区重磁三维反演及岩浆岩特征研究

doi:10.11720/wtyht.2021.0288

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Abstract

Huashan rock mass, Laoniushan complex and Huayangchuan ductile shear zone play an important role in the process of mineralization in Huayangchuan area of North Qinling Mountains. They are not only a record of tectonic evolution, but also an important indicator of tectono-magmatic mineralization.In this paper, based on the systematic study of the surface and airborne gravity, magnetic survey data, and surface electrical section and other geophysical data in Huayangchuan area, statistical analysis of physical properties;merge aviation data and ground data; and proceed 2.5 dimensional interactive inversion and three dimensional inversion with prior information constraints. The regional three-dimensional geology-geophysics model of Huayangchuan area is constructed, which provides the geophysical basis for the study of regional geological background and deep geological structure. Inference and interpretation of Huashan rock mass, Laoniushan complex and Huayangchuan ductile shear zone of the three dimensional shape and spatial distribution. This paper has analyzed and discussed the deep contact relationship among huayangchuan ductile shear zone, Laoniushan rock mass and Huashan rock mass, which has certain guiding significance for deep prospecting of uranium, molybdenum and other deposits in the peripheral contact zone of the large rock mass.

Key words： Huayangchuan data fusion three-dimensional gravity and magnetic inversion spatial distribution of rock mass

Received: 14 January 2021 Published: 15 December 2021

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	Articles by authors
	Pei-Hong GUO
	Zhi-Han FENG
	Wan-Yin WANG
	Xiao-Ping TANG
	Sheng-Rong LIU

Cite this article:

Pei-Hong GUO,Zhi-Han FENG,Wan-Yin WANG, et al. Three-dimensional gravity and magnetic inversion of magmatic rocks in the Huayangchuan, North Qinling area[J]. Geophysical and Geochemical Exploration, 2021, 45(5): 1217-1225.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.0288 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I5/1217

Geological background map and geophysical profile location diagram of Huayangchuan Area, Shaanxi Province

Gravity(a) and magnetic(b) anomaly map in the study area

Statistical table of formation, rock mass density and susceptibility

Dispersion distribution of rock mass, formation density and susceptibility in the study area

3D geological modeling technology route

2.5D inversion interpretation result of the section L4083

Fig.1)
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Diagram of three-dimensional geological model in the study area(the legend is the same as Fig.1)

Spatial distribution of Huashan rock mass, Laoniushan rock mass and Huayangchuan ductile shear zone

Deep contact relationship between Huashan rock mass, Laoniushan rock mass and Taihua rock group

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