Geochemical dispersion evaluation by criterion-based backward elimination at the Glojeh polymetallic Au (Ag-Cu-Pb-Zn) vein deposit, NW Iran

IF 1 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS Geochemistry-Exploration Environment Analysis Pub Date : 2023-08-03 DOI:10.1144/geochem2023-011

F. Darabi-Golestan

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Abstract

We applied the Backward Elimination (BE) method as a criterion-based iterative stepwise method to estimate the concentration of Au from the variables Ag, Cu, Pb, and Zn. We optimized the quadratic polynomial model (QPM) on various boreholes and trenches. The results indicate that the vertical zonation of Au is associated with Ag and Cu, along with their respective elemental functions Ag×Cu, Pb 2 , Pb×Zn, and Zn 2 . On the other hand, the lateral dispersion of Au is determined by Pb and Zn, along with the essential functions Ag×Zn and Pb×Zn. Zonation is in-depth and is indicated primarily by Zn rather than Cu and minor Pb, with Cu-Pb-Zn gradually extending upward at the upper levels. The vertical zonation trend describes the Ag

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伊朗Glojeh多金属金(Ag-Cu-Pb-Zn)脉状矿床地球化学分散性评价

我们应用反向消去法(BE)作为一种基于准则的迭代逐步方法，从Ag、Cu、Pb和Zn变量中估计Au的浓度。对不同井眼和沟的二次多项式模型进行了优化。结果表明，Au的垂直分带与Ag和Cu及其各自的元素函数Ag×Cu、pb2、Pb×Zn和zn2有关。另一方面，Au的横向色散是由Pb和Zn决定的，并与本质函数Ag×Zn和Pb×Zn一起决定。分带较深，以Zn为主，Cu不占主导地位，Pb含量较少，上层Cu-Pb-Zn逐渐向上延伸。垂直分带趋势描述了从近端到远端Ag

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来源期刊

Geochemistry-Exploration Environment Analysis 地学-地球化学与地球物理

CiteScore

3.60

自引率

16.70%

发文量

审稿时长

1 months

期刊介绍： Geochemistry: Exploration, Environment, Analysis (GEEA) is a co-owned journal of the Geological Society of London and the Association of Applied Geochemists (AAG). GEEA focuses on mineral exploration using geochemistry; related fields also covered include geoanalysis, the development of methods and techniques used to analyse geochemical materials such as rocks, soils, sediments, waters and vegetation, and environmental issues associated with mining and source apportionment. GEEA is well-known for its thematic sets on hot topics and regularly publishes papers from the biennial International Applied Geochemistry Symposium (IAGS). Papers that seek to integrate geological, geochemical and geophysical methods of exploration are particularly welcome, as are those that concern geochemical mapping and those that comprise case histories. Given the many links between exploration and environmental geochemistry, the journal encourages the exchange of concepts and data; in particular, to differentiate various sources of elements. GEEA publishes research articles; discussion papers; book reviews; editorial content and thematic sets.