The northern and southern sections of the western ca. 1880Â Ma Circum-Superior Large Igneous Province, North America: The Pickle Crow dyke connection?

► New high-quality geochemical data from the Circum-Superior Large Igneous Province. ► Geochemical similarities support previous similar age determinations. ► Geochemical similarities support a common geodynamic origin for the province. ► High MgO rocks present with high calculated degrees of partial melting. ► Geochemical similarities to modern oceanic plateaux consistent with plume origin.