Citation: | LIU Qineng, ZHOU Xiaodong, SU Xiaoyan, HE Yuliang, GUO Zhen. 2018. An analysis of geological, geophysical and geochemical characteristics and prospecting potentiality of the Liulaowan area in Henan Province[J]. Geology in China, 45(2): 392-407. doi: 10.12029/gc20180213 |
Liulaowan area is located on the northern piedmont of the Dabie orogenic belt in Henan Province, neighboring MeishanGuishan regional fault in the south and the Yanshanian Shangcheng granite body in the west. Geochemical anomalies dominated by Au, Ag, Cu, Pb, Zn were delineated on the basis of 1:50000 stream sediment survey. The Au geochemical anomalies are large in size, and have obvious concentration centers and good element combinations. High-value magnetic anomalies are consistent with the geochemical anomalies. The authors carried out anomaly verification work through measuring the geological, geophysical and geochemical prospecting sections. The authors delineated multiple high-value Au soil anomalies, accompanied by highly intensified and low resistance anomalies. In this paper, based on the detailed and contrastive analysis of the geological, geophysical and geochemical anomalies as well as metallogenic conditions in the area, consider that the favorable parts of prospecting are contact zone of intermediate-acid pluton and Huyoufang Formation, NWW faults structural; there are better prospecting potential in the zones of Au high-anomaly, the part of the mutation of positive and negative magnetic anomaly, the high polarizability and the low resistivity.
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Geological sketch map of Dabie orogenic belt
Geological sketch map of Liulaowan reconnaissance area
Analysis of the integrated anomaly from 1:50000 stream sediments survey in Liulaowan reconnaissance area
The Au element geochemical anomaly map of 1:50000 stream sediments survey from Liulaowan reconnaissance area
Plan contour view of reduction to pole of 1:50000 magnetic anomaly from Liulaowan area
The structure outline map of Liulaowan area
The geological, geophysical and geochemical section of LLW01 from Liulaowan reconnaissance area
The Geological, geophysical and geochemical section of LLW02 from Liulaowan reconnaissance area
Analysis of soil geochemical integrated anomaly from Liulaowan area