Detrital Zircon from the Jack Hills and Mount Narryer, Western Australia: Evidence for Diverse >4.0 Ga Source Rocks Crowley, James L. ; Myers, John S. ; Sylvester, Paul J. ; Cox, Richard A. Abstract Publication: Journal of Geology Pub Date: May 2005 DOI: 10.1086/428804 Bibcode: 2005JG....113..239C