| 化探数据处理的新技术 |
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| 引用本文： | 李长江,麻土华.化探数据处理的新技术[J].地质找矿论丛,1997,12(4):57-64. |
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| 作者姓名： | 李长江 麻土华 |
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| 作者单位： | 浙江省地质矿产研究所!杭州，310007 |
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| 摘 要： | 本文论述了一种新的空间点数据处理系统（ＮＡＳＳＤ）在化探数据处理扣的应用效果，以ＮＡＳＳＤ处理平均采样密度为每１５０００ｋｍ＾２一个，样品总数为５２９个泛滥平原沉积物数据，制作 的中国铜和银地球化学图，可以较清晰地指示出中国已知大型，超大型铜和银矿床的分布，以传统的数据处理方法无论是处理上述的极低密度采样数据处理还是每１ｋｍ＾２～５０ｋｍ＾２一个的区域水系沉积物测量数据，在制作（以相同含量间隔表示
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| 关 键 词： | 铜矿床 银矿床 地球化学勘探 数据处理 |
| 收稿时间： | 1997/9/11 0:00:00 |
A NEW TECHNIQUE FOR EXPLORATION GEOCHEMICAL DATA PROCESSING |
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| Li Changjiang and Ma Tuhua.A NEW TECHNIQUE FOR EXPLORATION GEOCHEMICAL DATA PROCESSING[J].Contributions to Geology and Mineral Resources Research,1997,12(4):57-64. |
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| Authors: | Li Changjiang and Ma Tuhua |
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| Institution: | Zhejiang Institute of Geology and Mineral Resources, Hangzhou, 310007;Zhejiang Institute of Geology and Mineral Resources, Hangzhou, 310007 |
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| Abstract: | The paper expounds the results of application of a new spatial pont data processing technique (NASSD-Nonlinear analysis system for spatial data) to exploration geochemical data processing, In Chinese Copper and Silver geochemical maps NASSD is applied to the data processingof Cu and Ag contents from 529 flood-plain sediment samples nearly cvering the whole land surface of China with average sampling density 1 sample per 15000km2. Over 80% known large andsuperlarge Cu and Ag deposits can be clearly indicated. However, no matter when other traditional data processing methods are applied, either to the above-mentioned data from average sampling density i sample per 15000km2 or to the RGNR stream sediment survey data from samplingdensity 1 sample per 1km2 - 50km2, the geochemical maps (in the same isopleth as the geochemical map generated from NASSD) have poor information about the distribution of the large andsuperlarge deposits. Therefore, in strategic exploring for large and superlarge deposits, it may bea feasible tool with high efficiency and low cost to combine NASSD with the wide-spaced geo-chemical mapping. NASSD can be combined in various GIS. If NASSD technique has applicationin the lnternational Geochemical Mapping Project, it is possible to bring about an advance in thepreparation of a World Geochemical Atlas and increase the usable values 0f a global geochemicalmaps in environmental investigations and the global prediction of superlarge deposits. |
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| Keywords: | geochemical mapping spatial point data processing NASSD superlarge de-posits |
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