Finite poles of Australia-Pacific rotation are calculated using a three-plate (Australia-Antarctica-Pacific) model and published Geosat data analyses of the Indian and Pacific Oceans (GEOS-3P solution). Features identified on maps of Geosat data from SW of New Zealand are used to determine a new best fit finite pole for the prerift (mid Eocene; ~45 Ma) configuration of the Australia-Pacific plate boundary and to refine Eocene-Miocene motions on the plate boundary (~45--20 Ma; GEOS-NZ results). Inverting the Australia-Pacific best fit finite rotation to find relative displacements between east and west Antarctica since the Eocene implies dextral oblique extension in the Ross Embayment and almost pure dextral movement in the Queen Maud Range. Early-mid Eocene convergence predicted through Antarctica conflicts with geological evidence and remains an unresolved problem. ¿ American Geophysical Union 1995