Cassie recently completed her BS. Her project focused on the Cenozoic geology of central Peru. Cassie’s project involved quantifying stable isotopic variations of modern waters along the Central Andes of South America where she collected over 130 water samples from modern rivers and streams across and along central and southern Peru, spanning nearly 4000 meters (>13,000 feet) in elevation, with samples as high as ~4600 meters (>15,000 feet!). Cassie determined a revised empirical lapse rate for the Central Andean rain shadow, and tested her results against theoretical lapse rates to determine the timing and rate of attainment of the high plateau of the Central Andes using ancient water preserved in volcanic glass. Cassie starts her MS degree this fall at the University of Oklahoma.