Geochemical and Geophysical Data Processing Aided by“Multifractal-Spectrum”Filters for GIS-Based Mineral Exploration

The commonesttask in m ineral exploration is to separateanomalies to reflect distinct geochemical processes (and geo-physical objects) such as m ineralization of various types.Thispaper introduces the recently- developed“multifractal- spec-trum”filters(MSF) for separating various types of geochemi-cal and geophysical anomalies from their the background basedon the distributions of their two- dimensional power spectra(Cheng et al.,1999) . The processing of lake- sediment geo-chemical data an…

Geochemical and Geophysical Data Processing Aided by “Multifractal-Spectrum” Filters for GIS-Based Mineral Exploration

A recently-developed method, on the bases of “multifractal-spectrum” filters for mineral exploration, is introduced in this paper. The “multifractal-spectrum” filters, a group of irregularlyshaped filters that are constructed on each processed datum, can be used to separate various types of geochemical and geophysical anomalies. The basic model, with an emphasis on the GIS-based implementation and the application to the geochemical and geophysical data processing for mineral exploration in southern Nova Scotia, Canada, indicates its advantage in the separation of multiple anomalies from the background.