  We present numerical evidence for an additional discontinuous transition
inside the jammed regime for an asymmetric bidisperse granular packing upon
compression. This additional transition line separates jammed states with
networks of predominantly large particles from jammed networks formed by both
large and small particles, and the transition is indicated by a discontinuity
in the number of particles contributing to the jammed network. The additional
transition line emerges from the curves of jamming transitions and terminates
in an end-point where the discontinuity vanishes. The additional line is
starting at a size ratio around $\delta = 0.22$ and grows longer for smaller
$\delta$. For $\delta \to 0$, the additional transition line approaches a limit
that can be derived analytically. The observed jamming scenarios are
reminiscent of glass-glass transitions found in colloidal glasses.
