邹平火山岩盆地铜矿找矿远景分析

Analysis on Cooper Prospecting in Zouping Volcanic Basin

邹平火山岩盆地是山东省重要的铜矿产地,深入认识其铜矿成矿规律,对于有序地推进战略性铜矿远景调查以及新的铜矿矿产地的发现有着重要意义。文章从区域地质背景分析着手,探讨了铜矿的赋存与青山群八亩地组、方格庄组火山岩地层,闪长岩、闪长玢岩、二长岩、辉长岩等岩体,以及放射状、环形断裂构造之间的空间关系。该区铜矿的赋存部位具有磁力低、电阻率低、激化率低,重力值高等物探异常的特征,空间上具有沿岩浆岩构造带展布、次火山岩内裂隙充填、空间等距、深部尖灭再现等特点。认为在王家庄岩体为中心的王家庄-大临池岩浆岩带,环形二长岩墙的内、外侧以及火山岩盆地深部收缩的"颈部",具有较大的铜矿找矿潜力。大上口—夫村、大临池、于兹山—黄山、黄花山—西窝陀、老人峰—贺家庄地区位于火山岩盆地赋存铜矿的内部构造上,也具备铜矿成矿的地层、断裂构造、岩浆岩、物化探等异常条件,应是今后铜矿勘查工作的远景地区。

Zouping volcanic basin is an important copper minerals in Shandong province.The understandingof copper-forming rule has great significance for cooper prospecting and the new discovery of copper deposits.From geological background,the spatial relationships between the occurrence of copper and Bamudi formation in Qingshan group and Fanggezhuang formation volcanic strata,diorite,diorite porphyry,monzonite,gabbro,and radial and ring fractural structures.The occurrence part of copper have the characteristics of low magnetic value,low resistivity,low intensification and great gravity anomaly.Copper ore distributed along the magmatic belt,and has the characteristics of fractured volcanic rocks,space offset and pinch and reconstruction in deep part.It is regarded that there has great potentiality for copper prospecting in Wangjiazhuang-Dalinchi magmatic belt which Wangjiazhuang rock is the center,inside or outside of ring monzonite wall,and the ＂neck＂ part of volcanic basin in deep and narrow part.Dashangkou-Fucun,Dalinchi,Yuzishan-Huangshan,Huanghuashan-Xiwotuo,Laorenfeng-Hejiazhuang region locate in the inner structure of copper-bearing in volcanic basin.It has cooper abnormality conditions in copper mine mineral,such as geological strata,split structures,magmatic rocks,and geophysical and geochemical exploration.This area should be regarded as an important area for copper exploration in the future.