A PALEOMAGNETIC REANALYSIS OF THE AUBORUS FORMATION, NAMIBIA
We collected oriented samples through most of the Auborus stratigraphy in 2011 and 2012. Preliminary results from detailed thermal demagnetization exhibit broad agreement with Piper’s  NRM data, and show a two-polarity hematite-borne characteristic remanence directed shallowly N-S. Directions are better grouped after correction for tectonic tilt, indicating a Proterozoic age of remanence because the Ediacaran-Cambrian Nama Group is flat-lying throughout the region. Present results are limited to the lower part of the Auborus Formation, in which a single reversal of the magnetic field has been documented. Analysis of the upper part of the formation is in progress, but we have already added three quality criteria (vector analysis, positive fold test, and reversals) to the Auborus pole of Piper . Along with a companion study of older units in the Sinclair terrane [Panzik et al., this meeting], our results will provide important constraints on regional tectonics of the western Kalahari craton, its role in Rodinia reconstructions, and late Mesoproterozoic geomagnetic reversal frequency.