Improved Accuracy and Precision in LA-ICP-MS U-Th/Pb Dating of Zircon through the Reduction of Crystallinity Related Bias

William Matthews1, Andy McDonald2, Brett Hamilton3 and Bernard Guest3, (1)University of Calgary, Geoscience, Calgary, AB, Canada, (2)Laurentian University, Earth Sciences, Sudbury, ON, Canada, (3)University of Calgary, Calgary, AB, Canada