|
|
|
| Research on geological-geophysical model in search for deep copper polymetallic ore deposits in Nanmentou area of northern Ningwu (Nanjing-Wuhu) basin |
| LI Shuang-Xi1, 2, GUO Kun-Yi1, CHEN Guo-Guang1, SONG Shi-Ming1, ZHANG Jing1, LU Sheng-Mei1 |
1.Nanjing Center of Geological Survey,CGS,Nanjing 210002,China;
2.No. 6 Geological Party,Jiangsu Bureau of Geology and Mineral Resources,Lianyungang 222000,China |
|
|
|
|
Abstract During the period of 2007~2015, lots of geological and geophysical survey work was carried out in Nanmentou area located in the north of Ningwu basin. On such a basis, researchers provided experience and advice for guiding deep ore prospecting in Yangtze Region. There are multiple solutions of geophysical data interpretation in the process of research. In the project implementation process, some drill holes which were designed according to the comprehensive anomalies (especially the geophysical anomalies) produced prominent effects, but some failed to show satisfactory results. The work to sum up the experience of failure and success of the arrangement of drilling is very important. On the basis of analyzing the petrophysical data of different lithologies in this area, the gravity and magnetic data were processed and interpreted, the factors causing gravity and magnetic anomalies were summarized, and a new view for distinguishing rock masses, volcanic rocks, exploration breccia pipes, volcanic channels and the distribution of fractures in this area was set up. In this paper, according to the characteristics of the CR and CSAMT electrical profiles, gravity and magnetic anomalies, as well as drill hole curves (physical and logging), the authors summed up geophysical anomalies, and the results have reinforced the understanding of the deep geological structures in this area and enriched the geophysical anomaly interpretation experience. Through the study of second time interpretation of electrical prospecting and gravity and magnetic anomalies and a comprehensive analysis of the previous data, the experience in geophysical interpretation has been enriched, which may have some directive significance for the application of exploration technology to the prospecting for deep deposits in Yangtze Region.
|
|
Received: 13 July 2016
Published: 20 October 2017
|
|
|
|
|
|
| [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. |
|
|
|
|
