Age and Provenance of the Beardmore Group, Antarctica: Constraints on Rodinia Supercontinent Breakup Goodge, J. W. ; Myrow, P. ; Williams, I. S. ; Bowring, S. A. Abstract Publication: Journal of Geology Pub Date: July 2002 DOI: 10.1086/340629 Bibcode: 2002JG....110..393G