Abstract
Deep-seated and broad-scale crustal geologic features can play an important role in the genesis and localization of metallogenic provinces. This is because of crustal tectonism, the intracratonic structural and thermal evolution of deep geologic terranes, and reactivation of major basement fracture zones. Such events can be accompanied by deep magmatism, and upwelling and circulation of mineralizing hydrothermal fluids. Long-wavelength magnetic anomaly data, from NASA's MAGSAT satellite, have been combined here with other geophysical and geological data sets to aid in interpreting the crustal framework for economic resources in the U.S. central Midcontinent. Satellite magnetometry can help define major crustal structure, past tectonic development, geologic provinces and their boundaries, and lower-crustal composition and physical properties
Published Version
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