宁芜盆地白象山矿区物化探异常特征及找矿意义

Geophysical and geochemical anomalies of Baixiangshan mine district in the Ningwu basin and their prospecting significance

白象山铁矿位于宁芜盆地南段钟姑矿田内,是宁芜玢岩型铁矿的重要代表。文章通过研究白象山矿区物性测量、物探测量及地球化学测量的实测数据,对该区物化探异常进行定性分析;以密度、磁性、电阻率等物性参数为纽带,通过定量解释,认为根据该区重力、磁法及CSAMT异常特征可大致定位地层与赋矿岩体的接触位置。有机烃中乙烯、丙烯异常在矿体上方出现明显高值异常,可准确指示隐伏矿体的空间位置,为在宁芜地区寻找隐伏型矿床提供新思路。

The Baixiangshan iron deposit located in the Zhonggu ore filed in the southern section of Ningwu Basin,is an important representative of the Ningwu porphyrite iron deposits.On the basis of insite measurement data of physical property and geophysical and geochemical prospecting,this study carried out qualitative analysis on the geophysical and geochemical anomalies in the Baixiangshan mine district.Quantitative interpretation was also conducted using parameters such as density,magnetic and resistivity.It can be concluded that characteristics of gravity,magnetic and CSAMT anomalies can basically define the contact zones of ore-bearing rock mass and the strata.Ethylene and propylene show high anomaly values at the position of the orebodies,which can precisely indicate the spatial positions of concealed orebodies.This will provide a new approach to search for concealed deposits in the Ningwu area.