  Chandler wobble excitation and damping, one of the open problems in
geophysics, is treated as a consequence in part of the interaction between
Earth and a hypothetical oblate ellipsoid made of dark matter. The physical and
geometrical parameters of such an ellipsoid and the interacting torque strength
is calculated in such a way to reproduce the Chandler wobble component of the
polar motion in several epochs, available in the literature. It is also
examined the consequences upon the geomagnetic field dynamo and generation of
heat in the Earth outer core.
