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Aeromagnetic Anomalies Midcontinent Rift System

Detailed Description

Regional aeromagnetic anomalies over the Midcontinent Rift System region. White dots show locations of known Keweenawan nickel-copper-platinum group element (Ni-Cu-PGE) mineral deposits. Gray block pattern shows area of Phanerozoic sedimentary cover. Red polygon shows location of northeast Iowa Intrusive Complex (NE IIC).


Public Domain.