Fig. 5: The proposed rift model of the Abitibi compared to geologic and geochemical whole-rock and isotopic data.
From: Archean rifts and triple-junctions revealed by gravity modeling of the southern Superior Craton
A The Moho depth map with the corresponding inferred rifts and the boundaries of three potential Archean microplates. The black lines in each plot are the rift boundaries at depth and are projected to the surface in B-D. B A map of the lithostratigraphic assemblages of the Abitibi colored by age70. Towns and mining districts are numbered (see Fig. 1). C Schematic illustration of the Abitibi rift network from A showing the relationship to the locations of the known VMS deposits and overlain on an interpolated map of εHf data20 of the igneous rocks (see text for discussion). D The interpreted Abitibi rift network superimposed on an interpolated map of Sr/Y data and (Eu/Eu*)/Y data of the igneous rocks20 (see “Discussion”). SR Stoughton-Roquemaure, KM Kidd-Munro, Tis. Tisdale, BR Blake River.
