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子区中位数衬值滤波法在川西斑岩型铜矿区地球化学异常的筛选与查证中的应用
引用本文:费光春,李佑国,温春齐,段琼,任光明.子区中位数衬值滤波法在川西斑岩型铜矿区地球化学异常的筛选与查证中的应用[J].物探与化探,2008,32(1):66-69.
作者姓名:费光春  李佑国  温春齐  段琼  任光明
作者单位:1. 成都理工大学,地球科学学院,四川,成都,610059
2. 重庆市北碚区王朴中学,重庆,600717
基金项目:中国地质调查局地质调查项目
摘    要:川西乡城-稻城-得荣地区地处川西高原,相对高差一般大于2 000 m,高山深切割现象显著.地质背景及表生地球化学环境复杂,找矿标志不明显,找矿难度大.采用传统化探方法可能漏掉部分强度不大而可能致矿的异常;或者是矿体有一定埋藏深度而异常较弱,由于未引起足够的重视而影响到找矿效果.子区中位数衬值滤波方法解决了低背景区和高背景区弱小异常的识别问题,克服了采用全区统一异常下限给异常识别带来的困难.

关 键 词:衬值滤波  斑岩型铜矿  化探异常  异常筛选与查证  川西  子区中位数衬值滤波法  川西  斑岩型  矿区  表生地球化学  化学异常  筛选  查证  应用  WESTERN  SICHUAN  ORE  DISTRICT  PORPHYRY  COPPER  ANOMALIES  INSPECTION  METHOD  FILTERING  CONTRAST  MEDIAN  AREA  识别带
文章编号:1000-8918(2008)01-0066-4
收稿时间:2006-03-30
修稿时间:2006年3月30日

THE APPLICATION OF THE SUBINTERVAL AREA MEDIAN CONTRAST FILTERING METHOD TO THE SIEVING AND INSPECTION OF GEOCHEMICAL ANOMALIES IN THE PORPHYRY COPPER ORE DISTRICT OF WESTERN SICHUAN
FEI Guang-chun,LI You-guo,WEN Chun-qi,DUAN Qiong,REN Guang-ming.THE APPLICATION OF THE SUBINTERVAL AREA MEDIAN CONTRAST FILTERING METHOD TO THE SIEVING AND INSPECTION OF GEOCHEMICAL ANOMALIES IN THE PORPHYRY COPPER ORE DISTRICT OF WESTERN SICHUAN[J].Geophysical and Geochemical Exploration,2008,32(1):66-69.
Authors:FEI Guang-chun  LI You-guo  WEN Chun-qi  DUAN Qiong  REN Guang-ming
Abstract:the Xiangcheng-Daocheng-Derong area is located in the western Sichuan continental platform, with the relative height difference more than 2000 m. In this area, dissection is deep, geographic conditions are unique, surface geochemical environment is complicated, and ore-prospecting indicators are not clear. All these factors make it difficult to find new deposits. Traditional geochemical data fail to find some anomalies related to mineralization. In some cases, ore bodies are deep and anomalies are weak, leading to ignoring the deposits. The subinterval area median contrast filtering method can solve the problem of recognizing weak anomalies in the low - back- ground area and high-background area.
Keywords:subinterval area median contrast filtering method  porphyry copper  geochemical anomaly  anomaly sieving and inspection  west Sichuan
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