BENOWITZ, Jeff, Geophysical Institute, University of Alaska Fairbanks, P.O. Box 755780, Fairbanks, AK 99775, jbenowitz@alaska.edu, VANSANT, Galen, Department of Geology, University of Alaska Fairbanks, po 753851, Fairbanks, AK 99775, ROESKE, Sarah, Geology Department, University of California, Davis, CA 95616, LAYER, Paul W., College of Natural Science and Mathematics, Univ of Alaska Fairbanks, PO 755780, Fairbanks, AK 99775, HULTS, Chad P., USGS, 4200 University Dr, Anchorage, AK 99508, and O'SULLIVAN, Paul, Apatite to Zircon, Inc, 1075 Matson Road, Viola, ID 83872-9709