Spatial Association of Mineral Occurrences and Curvilinear Geological Features |
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| Authors: | Emmanuel John M Carranza and Martin Hale |
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| Institution: | (1) Mines and Geosciences Bureau, Regional Office No. 5, Daraga, Albay, Philippines;(2) International Institute for Aerospace Survey and Earth Sciences (ITC), The Netherlands;(3) Delft University of Technology, The Netherlands |
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| Abstract: | Qualitative and quantitative knowledge about the spatial association between mineral occurrences and geological features are important in mineral potential mapping. Two existing methods for quantifying spatial association between mineral occurrences and curvilinear geological features are applied to the Baguio district of the Philippines. An experimental method is described and applied to the study area as well. The results of the three methods are highly similar, which demonstrates the effectiveness of the experimental method presented here for quantifying spatial association between mineral occurrences and curvilinear geological features. It is shown that gold occurrence in the Baguio district are strongly spatially associated with northeasterly trending faults/fractures rather than with northwesterly trending faults/fractures. It is also shown that the spatial association between the gold occurrence and older batholithic intrusives is stronger than the spatial association between gold occurrence and younger porphyry intrusives. These spatial geoinformation characteristics can be used as evidential data layers in GIS-based mineral potential mapping. |
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| Keywords: | spatial association distance distribution weights of evidence distance correlation mineral potential mapping Baguio gold district (Philippines) |
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