Study On Inference Of Excitation Of Excitation In Laojizhai Lead - Polymetallic Mining Area, Jinping County, Yunnan Province

Pb is one kind of important non-ferrous metal resources.Pb polymetallic mining area in Yunnan Jinping is regarded as metallogenic background. Fast and effective method of geophysical prospecting is needed to find out the distribution of insidious ore and delineat target area in the area covered with extra-thick topsoil when we lack Geological, Geochemical exploration, Remote sensing data. Lots of prospecting cases prove that Induced polarization method (IP) is commonly used to prospect insidious disseminated ore.So, induced polarization method was putted into the area. 17measuring lines (100m×20m) were accomplished during 2014.4 to 2014.5.At the same time, we have collected and measured 67 specimens. Data quality was qualified. Over 10 maps wre completed. Filtering and convolution were applied to process data in order to suppress distraction.Areal geology features, the local geology features and geophysical characteristics were summarized. Further more, we interpreted abnormals qualitatively.We delineated and interpreted 4 apparent polarizability anomalies,7 attenuation anomalies and 6 apparent resistivity anomalies.1 apparent polarizability anomaly belongs to the anomaly caused by known ore body.The rest three anomalies are significant prospecting anomalies.1 attenuation anomaly is regard as anomaly caused by known ore body.5 attenuation anomalies are significant prospecting anomalies. The rest one is considered unknown nature.In addition.6 apparent resistivity anomalies belongs to the anomaly caused by known ore body.3 apparent resistivity anomalies are significant prospecting anomalies. The rest two anomalies are considered unknown nature.In addition.At last, we interpreted two field sources indicated by significant prospecting anomalies quantificationally.Then, toward, occurrence and dip angle were confirmed. The result was favourable through engineering verification.