Proterozoic dykes are aero magnetically prominent tholeiitic basalts which have high modal oxide elements. A positive indication states that geochemical there is a clear distinction observed between the two swarms that is Archean high and Proterozoic low and La/Yb dyke swarms

Proterozoic dykes are aero magnetically prominent tholeiitic basalts which have high modal oxide elements. A positive indication states that geochemical there is a clear distinction observed between the two swarms that is Archean high and Proterozoic low and La/Yb dyke swarms