江西彭山岩体重力异常特征研究

Study on Gravity Anomaly Characteristics of Pengshan Rock in Jiangxi Province

重力勘探在深部构造探测方面具有独特的优势。江西彭山矿田区由一系列同心环弧状层间重力滑动断层和周边放射状横断裂组成的开阔短轴背斜,该构造架构是控制彭山矿田锡金属成矿系列的重要构造类型。本文在总结前人工作的基础上,结合最新的中大比例尺重力测量成果,重点分析了曾家垄-张十八一带的重力场特征,并对以后识别中温热液交代层控型及矽卡岩型锡铅锌多金属矿重力异常进行了探讨和总结。

Gravity exploration has patent advantages in deep geological structure detection.An open short axis anticline consisting of a series of concentric arc-like interbedded gravity-glide faults and peripheral radial transverse faults in Pengshan ore field,Jiangxi province,is an important structural type controlling the tin metallogenic series in Pengshan ore field.Based on the review of previous literature,combined with the latest medium-large scale gravity surveys,this paper focuses on the analysis of the gravity field characteristics in Zengjialong-Zhangshiba area,discusses and summarizes the identification techniques of medium temperature hydrothermal metasomatic stratabound and skarn type Sn-Pb-Zn polymetallic ore anomalies.