Abstract

• Determining peak zirconium concentrations in rutile • Calculating peak temperatures of formation based off of the zirconium concentrations in rutile • Comparing zirconium concentrations between rock samples to determine if there is differences in zirconium concentrations outside of uncertainty Location of samples in the Catalina Schist marked by a star. (Dr. Sarah Penniston-Dorland) PT diagram illustrating P-T conditions specific to the amphibolite facies rocks, labeled AM, of the Catalina Schist (Bebout, 2007). Yellow star indicates T calculated from this study. Representative charts depicting zirconium content in a crystal from each sample. The error bars indicate 2 sigma uncertainty due to counting statistics of the electron probe microanalyzer, the blue line indicates the average zirconium content based off of usable data (within uncertainty and less than 300 ppm silicon content), and the red lines indicate 2 sigma uncertainty from standard deviation of mean (SDOM).