Geochemical Modeling of Heavy Metals Pollution, Emphasizing on Cu-Pb by Using Remote Sensing in South of Kashan
Subject Areas :
Mehran Farahmandian
1
(
Assistant Professor, Esfahan University
)
Ali Ghasemi
2
(
Assistant Professor, Esfahan University
)
Sohrab Afshari
3
(
Assistant Professor, Esfahan University
)
Mahdi Shabankareh
4
(
Assistant Professor, Esfahan University
)
Keywords: Remote Sensing, Geochemical Modeling, heavy metals pollution, Alteration, South of Kashan,
Abstract :
Structurally, south of Kashan is a part of Orumieh-dokhtar zone. Late stage fluids of the Oligo-Miocenegranodiorite have been influenced Eocene volcanic rocks, that caused argillic, sericitic, propyllitic, calc-silicate,iron oxides and silisification alteration zones. Based on the cluster analysis of samples, the elements can bedivided into two groups of Cu-Co-Cd and Pb-Zn-As. Distribution of the metals in the two groups has a goodadaptation with argillic and calc-silicate alteration zones respectively. According to ICP-MS analysis, minimumand maximum of Cu, Pb, Cd, Zn, As and Co is (1.5-459), (1-623), (>2.97), (14-413), (0.5-21) and (1.5-17) ppmcorrespondingly. On the basis of the soil standard, there is some Cu & Pb contamination. Combinedmultiplicative calculation show good correlation with both argillic as well as clac-silicate alterations and Cu &Pb pollution. Kriging estimation has been documented maximum Cu & Pb anomalies occurred in the southernpart of area, on igneous rocks. Field relationship, remote sensing data and geostatic calculations stronglysupport; granodiorite body has been generated Cu & Pb pollution. Otherwise fluids caused hydrothermalalteration, which enriched those elements.
