Paleomagnetic determination of the inclination of the ancient geomagnetic field for localities in the Alaska Peninsula, Wrangellia, Chugach and Kuskokwim time until the present. Prior to this, the ambiguity of polarity of the ancient geomagnetic field allow shallow interpretations; however, the preferred interpretation involves southerly motion of the terranes from Triassic to Earth Jurrassic time and steady northward motion from then up to the present. The latitudinal rate is about 6 cm/yr.