摘要
邹平铜矿处于齐河-广饶深大断裂带南部的邹平火山岩盆地中,形成于破火山口火山通道充填的石英正长闪长岩岩颈中央上部,包括伟晶岩型铜矿和细脉浸染状斑铜矿床两种类型。前者矿体较小,但品位高;后者品位较低,但规模中等。含矿石英正长闪长岩等密度小、磁性弱,故在火山岩系中呈现高背景重力场上的重力低和杂乱高磁场背景中的低负异常,即"重磁同低",且高极化。重磁同低异常区和高极化率异常带,是本区寻找铜矿的有利部位。
Zouping copper deposit locates in Zouping volcanic basin in south part of Qihe--Guangrao deep fault belt. It was formed in the central upper part of caldera neck piping filling with diorite. It includes two types of copper deposit： one is crystal form copper deposit, while the other is micro--disseminated type copper deposit. The orebodies of the former were small, but has a high ore grade; while the latter has a low ore grade but with a medium scale. Ore--bearing quartz diorite has small density and weak magnet- ism, so it showed low gravity in high background gravity field in the volcanic rocks, and low negative ab- normality in miscellaneous disorderly high magnetic field background, that is namely ＂the heavy magnetic together with low＂ with high magnetism. Heavy magnetic abnormality and high polarization abnormality belts are beneficial part for prospecting copper deposits.
出处
《山东国土资源》
2008年第9期19-23,27,共6页
Shandong Land and Resources
基金
山东省国土资源厅2007<邹平火山岩盆地铜成矿规律研究及钻探验证>项目
关键词
铜矿
石英正长闪长岩
重磁同低
高极化率
火山岩盆地
山东邹平
Copper deposit
quartz-- syenite-- diorite
gravity low and magnetic low
high polarization
vol-canic basin
Zouping in Shandong province
