In e-First! What lies beneath: geophysical mapping of concealed Precambrian intrusive complex on IA–MN border: http://t.co/OTkQXbg5OL @USGS
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Just-IN! What lies beneath: Geophysical mapping of concealed Precambrian intrusive complex along IA-MN border: http://t.co/HJYpcp55zD @USGS