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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/5093

Title: Integration of Spatial and Non-Spatial Information for the Interpretation of Soil Geochemical Patterns
Authors: Owusu, E. A
Dzigbodi-Adjimah, K
Mathesis, G.
Keywords: Geochemical survey
Non-spatial information
B horizon
Anomalies
Mineralization
Issue Date: 2003
Publisher: Journal of Science and Technology
Citation: Journal of Science and Technology Vol. 23 No. 2 pp 53-62
Abstract: During a soil survey in an area located within Birimian supercrustal of the Ashanti volcanic gold belt of Ghana, samples were collected along three profile lines from a depth range of 20 to 25 cm representing the B horizon Various spatial and non-spatial information for each sample were recorded to form a database. The minus 63 um fraction of the samples were then subjected to X-ray fluorescence (XRF) analysis to determine any mineralization other than gold in the area. The concentrations of three elements. Cu. Mn and Zn. were also determined by hot (Hx) and cold (Cx) extraction methods using flame atomic absorption spectrophotometer (AAS). High values for SiO2, Al2O3 and F2O3 and low concentrations of Cu. Cr. Mn. As. Ba. Ni Rb. Sr. V and Zr were observed for the XRF results and all other element of economic interest range from very low to below the detection limit. Comparing the results of three elements from the three methods, measured concentration levels of Cu, Mn and Zn was highest for the XRF. followed by Hx and Cx as expected. In relating XRF. Hx and Cx results to the non-spatial information it was observed that hill top samples are dark coloured whilst samples downhill are light coloured. A second observation made was that the SiO2, concentration decreases downs slope whilst AlO3 and Fe203 behave in the reverse fashion for all the methods. It was thus concluded that the hilltop samples represent the B horizon proper whilst the others are from transported material from the hilltops rich in quartz which is resistant to weathering and depleted of clay minerals or in-situ A horizon sampled as the B
Description: Article published in the Journal of Science and Technology,Vol. 23, No. 2 pp 53-62
URI: http://hdl.handle.net/123456789/5093
ISSN: 08550395
Appears in Collections:Journal of Science and Technology 2000-

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