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Research Paper | Geophysics | Nigeria | Volume 8 Issue 3, March 2019

Estimation of Relative Crustal Abundance of Radioelements Using Sum-Normalisation and Elemental Ratio Techniques

Ogungbemi O. S. | Amigun J. O. | Olayanju G. M.

Abstract: Airborne gamma-ray spectrometry method was used to estimate relative crustal abundance of radioelements with a view to define target area for possible mineral deposit in some parts of Ilesha schist-belt. This exploration techniques reveal relative concentration of each radioelement using the ratios of elements to sum of elements. Therefore, radioelement concentration contrast between favourable host-rock (granite-gneiss) is a significant pathfinder. eU2/eTh and eU2/K ratios anomaly on radiometric maps may be indicative of mineralisation and/or potential localized radioactive deposits. This method, is environmental friendly and easy to use, it is therefore a good tool to rapidly define target area (s) for mineral exploration at a regional scale. The method may also find application in exploring for other types of deposit characterised by an enrichment or depletion in U, K and/or Th.

Keywords: Estimation, abundance, ratios, radioelement, Relative, sum-normalisation, Techniques

Edition: Volume 8 Issue 3, March 2019,

Pages: 1306 - 1311

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