Based on the relative field abundances of the lithologies measured, the three principal terranes exposed in the uplift are characterized at depth by the following average values of Vp, Vs, and apparent Poisson's ratio, σa: (i) Michipicoten greenstone bell (greenschist, depth 0–6 km, Vp = 6.6 km/s, Vs = 3.9 km/s, σa = 0.235); (ii) Wawa gneiss terrane (amphibolite, depth 6–17 km, Vp = 6.5 km/s, Vs = 3.8 km/s, σa = 0.24); and (iii) Kapuskasing structural zone (granulite, depth 17–23 km, Vp = 6.9 km/s, Vs = 3.9 km/s, σa = 0.27).
Ces terranes sont caractérisés en profondeur par les valeurs moyennes de Vp, Vs et les rapports apparents de Poisson σa qui suivent : (i) zone de roches vertes de Michipicoten (schistes verts, profondeur 0–6 km, Vp = 6,6 km/s, Vs = 3,9 km/s, σa = 0,235); (ii) terrane gneissique de Wawa (amphibolite, profondeur 6–17 km, Vp = 6,5 km/s, Vs = 3,8 km/s, σa = 0,24); (iii) zone structurale de Kapuskasing (granulite, profondeur 17–23 km, Vp = 6,9 km/s, Vs = 3,9 km/s, σa = 0,27).