  We investigate what information on the orbit type stratification of a torus
action on a compact space is contained in its rational equivariant cohomology
algebra. Regarding the (labelled) poset structure of the stratification we show
that equivariant cohomology encodes the subposet of ramified elements. For
equivariantly formal actions, we also examine what cohomological information of
the stratification is encoded. In the smooth setting we show that under certain
conditions -- which in particular hold for a compact orientable manifold with
discrete fixed point set -- the equivariant cohomologies of the strata are
encoded in the equivariant cohomology of the manifold.
