【作者】 陈洁明；

【导师】 孙春岩；

【作者基本信息】 中国地质大学（北京） ， 地质工程， 2010， 硕士

【摘要】 综合信息成矿预测是以地质理论为先验,应用勘探获得的地球物理、地球化学和遥感地质等综合信息开展的针对勘探目标的研究和预测工作。它着眼于矿床成矿地质条件的分析、实际找矿标志的研究和成矿规律的总结,具有较好的客观性和实用性。此次勘探采用了1:10000的30km2磁法勘探资料,结合地质资料与化探数据对本测区进行了综合信息成矿预测。磁法勘探是观测地下介质磁性差异的一种地球物理勘探方法。根据测得的磁场变化可以寻找具有磁性异常的岩矿体和其他埋设物体。磁法勘探在磁铁矿勘查、区域地质扫面、寻找地下热源、地下金属管线、地下未爆炸弹、废弃金属障碍物、考古等方面应用得越来越广泛。随着磁法勘探仪器精度的提高和反演技术的发展,磁力勘探技术越来越受到人们的重视。广东省龙川地区处于华南褶皱系内河源深断裂带与贵东大断裂交接部南西隆起区,是我国有色金属及硫的重要矿化带之一,分布铁、铅锌、银、锰等矿物。金石嶂矿区位于广东省龙川县,矿点众多,铁、铅、锌、铜、银矿化普遍,成矿地质条件有利,矿化显示显著,具有寻找大中型铅锌银矿床的前景。本文依托有色地质调查中心南方所在金石嶂地区实施的高精度磁法勘探项目,对金石嶂测区的磁异常进行了分析。区内磁异常带共有三条,磁异常点十七个,详细地反映了测区磁异常特征。通过对磁异常数据进行化极,求导和使用磁异常总梯度模法圈出了本区磁异常的形态,确定其走向和平面地理位置,以了解测区磁性地质体的分布,达到预测找矿的目的。同时对磁异常区和化探异常区进行了有效套合,并结合地质预查进行了综合分析,对金石嶂地区做了综合信息成矿预测,最后圈出了三个找矿靶区,划分了二个成矿区带,推断了8条断裂,达到了优选找矿的目的。更多还原

【Abstract】 Comprehensive information mineral estimate prospect predicts based on geological theory,used the information of geophysical,geochemistry and geology remote sensing etc. to carry on estimate work.It fixes attention on geology conditional analysis that formed mineral and the research of mineral marking at the mineral bed and the summary of the mineralization rule.As a result,it has greater objectivity and function.Magnetic exploration is a geophysical method through observing magnetic difference in the underground medium.It can be used to find rock bodies who has magnetic anomalies and other earth burial.Now it has been used in magnetite exploration,regional geology exploration,underground geothermicsource,underground metal tubal and lines,underground bomb unexploded,wasted metal and archeology more and more widely.With the improvement of instrument precision and development of inversion,people pay more attention to magnetic exploration.Longchuan Country ,Guangdong Province fold in the South China within the department of Heyuan deep fault zone and Guidong deep fault zone handover of southwest uplift,where is one of the important countrynon-ferrous metal and sulfur mineralized zone.Jinshizhang mining zone has good geological condition and notable mineralization marks,so it has prospect of seeking large size lead-zinc silver deposits.This paper depends on high-precision magnetic survey by China Non-Ferrous Metals Resource Exploration Co. LTD, Changsha.,analysis magnetic anomaly in Jinshizhang district.The district has 3 magnetic anomaly belts and 17 magnetic anomaly spots.This paper delineate anomaly shape and define its stike and plane location by reduction to equator,derivation and analytic signal method.At the same time,combining geological pre-exploration and geochemical data,this paper make Comprehensive information mineral estimate.It gets 3 prospecting targets, 2 mineralization zones and 8 faults. Thus,it fulfill the target of optimization mineral exploration.更多还原