  When joined the unified gauge picture of fundamental interactions, the
gravitation theory leads to geometry of a space-time which is far from
simplicity of pseudo-Riemannian geometry of Einstein's General Relativity. This
is geometry of the affine-metric composite dislocated manifolds. The goal is
modification of the familiar equations of a gravitational field and entirely
the new equations of its deviations. In the present brief, we do not detail the
mathematics, but discuss the reasons why it is just this geometry. The major
physical underlying reason lies in spontaneous symmetry breaking when the
fermion matter admits only the Lorentz subgroup of world symmetries of the
geometric arena.
