  We show the evolution of a gluon plasma towards equilibrium starting at some
early moment when the momentum distribution in the central region is
momentaneously isotropic. Using HIJING results for Au+Au collision as initial
input, we consider thermalization and chemical equilibration simultaneously at
both LHC and RHIC energies. Thermalization is shown to be driven chiefly by
inelastic process in our scenario contradicting common assumption that this is
the role of elastic process. We argue that only the inelastic dominancy depends
on the initial conditions but not the dominance itself.
