|
|
|
| Study on the faults structure and granite body distribution in Pangushan area of Yudu-Ganxian ore district using gravity and magnetic data |
| WANG Wan-Yin1, WANG Yun-Peng1, LI Jian-Guo2, LIU Jin-Lan1, ZHAO Bin2, ZHOU Xin-Peng2 |
1. Institute of Gravity and Magnetic Technology, Chang'an University, College of Geology Engineering and Geomatics, Chang'an University, Key Laboratory of Western China's Mineral Resources and Geological Engineering, Ministry of Education, Chang'an University, Xi'an 710054, China;
2. Shanxi Institute of Geophysical and Geochemical Survey, Yuncheng 044004, China |
|
|
|
|
Abstract Pangushan area is an important mining area inYudu-Ganxian ore district in which tungsten and tin formed, and the faults structure and granite body have great influnce in orebody formed in this mining area. The purpose of this study in which the faults structure and granite body distribution of the study area are researched useing gravity and magnetic data is to provide geophysical basis for deep prospecting. We, in this paper, have done the following work: ① the plane position of the faults structure is inferred using the technique of normalizing the total horizontal derivative of vertical derivative of the gravity anomaly; ② the vertical first derivative of gravity anomaly is inversed using Euler deconvolution method, and the average depth of the faults structure is inferred; ③ the plane position of the granite body is inferred using the vertical first derivative of gravity and magnetic anomalies; ④ the intersection position of the granite body is inferred using the forward and inversion techniques of 2.5D gravity and magnetic profile data in human-computer interaction by RGIS software, and the correctness of interpretation results is verified using borehole data; ⑤ the spatial position of the granite body is showed using the model editing module of 3D gravity and magnetic anomalies area data by RGIS software. The results show that Pangushan area has exposed faults, buried faults, exposed low density and weak magnetic granite body, buried low density and strong magnetic granite body. The granite body distribution is controlled by the faults structure, and the orebody distribution is jointly controlled by the faults structure and granite body.
|
|
Received: 20 May 2014
Published: 10 August 2014
|
|
|
|
|
|
| [1] |
CHEN Xiu-Juan, LIU Zhi-Di, LIU Yu-Xi, CHAI Hui-Qiang, WANG Yong. Research into the pore structure of tight reservoirs:A review[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 22-31. |
| [2] |
XIAO Guan-Hua, ZHANG Wei, CHEN Heng-Chun, ZHUO Wu, WANG Yan-Jun, REN Li-Ying. Application of shallow seismic reflection surveys in the exploration of urban underground space in Jinan[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 96-103. |
|
|
|
|
