U-TH DATING OF ZIRCON AND ALLANITE RIMS FROM SUGARLOAF MOUNTAIN, A HIGH SILICA RHYOLITIC DOME WITHIN THE SAN FRANCISCO VOLCANIC FIELD, NORTHERN ARIZONA
HUISA, Allison, School of Earth and Sustainability, Northern Arizona University, FLAGSTAFF, AZ 86001 and REID, Mary R., School of Earth and Sustainability, Northern Arizona University, Flagstaff, AZ 86011