Geochemical characterization of volcanic soils from Tawau, Sabah

Baba Musta , and H. F W Soehady, and Sanudin Tahir, (2008) Geochemical characterization of volcanic soils from Tawau, Sabah. Bulletin of the Geological Society of Malaysia (54). pp. 33-36. ISSN 0126-6187

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Abstract

This paper discusses the geochemical characteristics of volcanic soils from Tawau, Sabah. The concentration of major elements and trace elements were determined using XRF analysis whereas mineralogical studies were carried out using XRD and SEM techniques. The results of the analyses show that SiO2 and Al2O3 are abundant in volcanic soils with concentrations from 43.06% - 67.96% and 12.55% - 29.92%, respectively. The concentration of Fe2O3 is next in abundance with the concentration of between 6.82% and 11.29%. The concentrations of CaO, K2O, MgO, Na2O, P2O5, and TiO2 are less than 5%. The high concentrations of SiO2 and Al2O3 are due to the high abundances of vermiculite and quartz as detected from XRD, while the high concentration of Fe2O3 is due to the presence of geothite. The average concentrations for Ba, V, Zr and Zn in volcanic soils are 341 ppm, 315 ppm, 239 ppm, and 124 ppm, respectively. The strong correlations between Zn and Al2O3, Fe2O3 and SiO2, indicate that Zn is being adsorbed by secondary minerals especially vermiculite and goethite.

Item Type:Article
Uncontrolled Keywords:Geochemistry, Tawau, Trace elements, Volcanic soil
Subjects:?? QE500-639.5 ??
Divisions:SCHOOL > School of Science and Technology
ID Code:1510
Deposited By:IR Admin
Deposited On:25 Mar 2011 16:02
Last Modified:23 Feb 2015 12:44

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