摘要：Abstract
The aim of this study is to test and compare two
probabilistic based models (frequency ratio and weightsof-
evidence) with regard to regional gold potential mapping
at Kelantan, Malaysia. Until now these models have
not been used for the purpose of mapping gold potential
areas in Malaysia. This study analyzed the spatial relationship
between gold deposits and geological factors such as
lithology, faults, geochemical and geophysical data in geographical
information system (GIS) software. About eight
(8) gold deposits and five (5) related factors are identified
and quantified for their spatial relationships. Then, all factors
were combined to generate a predictive gold potential
map. The predictive maps were then validated by comparing
them with known gold deposits using receiver operating
characteristics (ROC) and “area under the curve”
(AUC) graphs. The results of validation showed accuracies
of 80% for the frequency ratio and 74% for the weightsof-
evidence model, respectively. The results demonstrated
the usefulness of frequency ratio and weights-of-evidence
modeling techniques in mineral exploration work to discover
unknown gold deposits in Kelantan, Malaysia.
关键词：KeywordsGold potential mapping Remote sensing
Frequency ratio Weights-of-evidence GIS Kelantan
Malaysia
