摘要
合作—美武一带地处甘肃南部,西秦岭中南部,区内矿山分布较多,地球化学环境复杂,地球化学背景起伏很大,传统方法利用全区数据计算统一异常下限,容易漏掉低背景区强度小但可能致矿的异常而影响找矿效果。笔者在参加合作—美武一带地质矿产远景调查项目过程中,通过在工作区划分地质子区校正地球化学背景有效的解决了特异值对异常下限的影响和地球化学背景高低起伏大的地区低背景区弱小异常的识别问题,并通过在地质背景衬度法计算过程中引入EDA勘查数据分析(EDA)技术对研究区地球化学数据进行处理,有效的克服了矿山分布区特异值对异常下限计算结果的影响。
The area of Hezuo-Meiwu located in middle-south of west Qinling in south Gansu where a lot of large deposit are discovered this area. Geochemical environment is complicated. Regional background relief volume is also special. The traditional method of overall data statistic is easy to miss the low background and small intensity area which forming the mineral anomalies. Through the prospect survey project, the author introduce the EDA analysis technology to solve the effect of extraordinary value and undulate background volume effectively. The problem of distinguishing the puniness anomalies in low background is also settled.
出处
《甘肃地质》
2015年第4期58-63,共6页
Gansu Geology
关键词
化探异常
地质背景衬度法
EDA分析技术
甘肃省
geochemical anomaly
background contrast method
EDA analysis technology
Gansu Province
