DETRITAL ZIRCON RECORD OF CORDILLERAN MAGMATISM AS PRESERVED BY JURASSIC-PALEOCENE FOREARC AND FORELAND BASINS OF THE NORTH AMERICAN CORDILLERA
SCHWARTZ, Theresa, U.S. Geological Survey, Geosciences and Environmental Change Science Center, DFC, Box 25046, MS 980, Denver, CO 80225, SURPLESS, Kathleen D., Geosciences, Trinity University, One Trinity Place, San Antonio, TX 78212 and COLGAN, Joseph, U.S. Geological Survey, Geosciences and Environmental Change Science Center, P.O. Box 25046, DFC, MS 980, Denver, CO 80225