Time evolution of the mass-weighted abundances for selected isotopes and cumulative lanthanides’ and actinides’ abundances in the GK simulation, considering only matter ejected at latitudes’ θ ≲ 15 degrees. The vertical black lines mark the time interval during which the thermal bomb is active. Top panel: Absolute abundances from the simulation including a polar jet (jet). Bottom panel: Relative differences with respect to the same simulation, but without polar jet. The horizontal dashed lines indicate factors-of-unity deviations and the case ⟨Y_i⟩=⟨Y_i^pp⟩. Differences are shown only at times when ⟨Y_i⟩> 10⁻¹².