菲律宾北甘马磷省巴拉嘎梨市(Paracale)阿古桑(Agusan)测区磁场特征与铁、铜找矿  

Magnetic Characters and Iron-copper Prospecting in Agusan Area,Paracale,Camarines Norte,Philippines

作　　者：陈建民[1,2] 陈学文 张顺洋 梁仰仁 

机构地区：[1]中国冶金地质总局二局,福建福州350001 [2]福州雷力之星探测技术有限公司,福建福州350001

出　　处：《甘肃冶金》2010年第5期119-123,共5页Gansu Metallurgy

摘　　要：菲律宾阿古桑地区是重要的铁、铜(金)多金属成矿带,由于覆盖厚地质工作难度大。针对测区具体情况选择物探磁法扫面圈出异常区,初步研究测区的地磁场特征,划分出两大磁异常带;根据野外地质观察和岩矿石磁性参数测定分析,推测Ⅰ号磁异常带为磁铁矿异常,Ⅱ号异常带为闪长岩与围岩接触交代矽卡岩引起,为了解其含矿性,选择Ⅱ-2磁异常进行激点测量,在磁异常的范围内圈定出较高的激电异常,预测为以铜为主的金属硫化物引起,并设计钻孔验证。低缓高覆盖区磁测电测方法可行。Agusan is the important polymetallic mineralization zone of iron and copper（gold）,it is difficult for geological survey because of thick covering.Anomalous areas are delineated through geophysical magnetic survey as per concrete situatons of survey areas.Two anomalous zones are divided according to primary survey of magnetic characters.In according to field geological observe and analyse of rock magnetic parameters,we infer No.1 anomalous zone is magnetite anomaly,No.2 anomalous zone is caused by skarn metasomatic contact with diorite and well rock.We choose No.2 magnetic anomaly to undertake basic point measurement in order to make clear the minerals-containing.High level IP anomaly which is considerd to be caused by metal sulfide dominated by copper will be located within anomalous area,then validate by drilling holes.Magnetic survey and electric survey can be used for places which are low and highly covering.

关 键 词：菲律宾阿古桑 物探磁测电测 铁铜找矿 

分 类 号：P631.2[天文地球—地质矿产勘探]