山东齐河—禹城地区重磁场特征及找矿预测

doi:10.11720/wtyht.2021.1260

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Abstract

Rich iron ore has been drilled in the depth from 748 m to 1 542 m in Qihe-Yucheng area. As the Quaternary sediments cover more than 500 m in thickness, the geophysical field information of the rich iron ore is weak and hence the prospecting is difficult. By studying airborne and ground gravity and magnetic anomaly characteristics of mineralization anomaly and using methods such as reduction to the pole, vertical derivative and total gradient module, the authors further reduced the prospecting target and provided a basis for the drilling work. The authors extracted the direct prospecting information of rich iron ore, established the geophysical prospecting signs of this area and delineated 7 key exploration areas. The results of this research provide an important basis for the subsequent deployment of prospecting work in Qihe-Yucheng area.

Key words： high-grade iron ore Qihe area magnetic and gravity method prospecting target area

Received: 19 May 2020 Published: 29 April 2021

ZTFLH:

P631

Corresponding Authors: YU Chang-Chun E-mail: Zml426@163.com;bjycc@126.com

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	Articles by authors
	Ming-Lei ZHOU
	Liang RU
	Yu-Zhen ZHU
	Chang-Chun YU
	Cheng-Ping WU
	Zhi-Jun GAO
	Wen-Yan ZHANG
	Yu-Bao SHAO

Cite this article:

Ming-Lei ZHOU,Liang RU,Yu-Zhen ZHU, et al. Magnetic field characteristics and ore prediction in Qihe-Yucheng area of Shandong Province[J]. Geophysical and Geochemical Exploration, 2021, 45(2): 301-307.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.1260 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I2/301

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Regional structure sketch of Qihe-Yucheng and surrounding areas^[1]

Plane distribution map of airborne gravity anomaliy and aeromagnetic anomaly characteristics
a—airborne magnetic total field; b—contour map of airborne magnetic reduce to pole field;c—residual magnetic anomaly of airborne magnetic reduce to pole field; d—residual gravity anomaly map;e—vertical first derivative of airborne magnetic reduce to pole field; f—vertical first derivative of residual gravity anomaly

Contour map of high precision ground geomagnetic anomaly
a—ground magnetic reduce to pole field contour map; b—residuamagnetic anomaly map of reduce to pole field; c—vertical first derivative map of magnetic reduce to pole field

Gravity magnetic inversion profile of line HP5

Total gradient amplitude contour map of airborne magnetic reduce to pole field

Map of prospecting the target areas and key exploration areas

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