Michael Mohr, Boise State University, Boise, ID for his project: Chevkinite: A Petrochronometer Sensitive to PreEruptive Magma Dynamics Mike Mohr is a second-year PhD student at Boise State University working with Dr. Mark Schmitz in the Isotope Geology Laboratory. He is a North Carolina native who grew up as an outdoors adventurer and enthusiast, which kindled his passion for geology. Mike received his BS in geology from the University of North Carolina at Charlotte (USA) and his MS in geology from North Carolina State University (USA). His MS thesis detailed the petrogenesis of large-volume rhyolite ignimbrites in the Miocene Superstition Volcanic Field (central AZ, USA) and was a catalyst for his obsession with accessory minerals. Mike’s current research focus is in high-precision U-Pb and Th-Pb geochronology for applications in petrochronology, mineral resources, and the geologic time scale. Although he loves zircon (a requirement for geochronologists), he is particularly interested in nonconventional accessory minerals like titanite, chevkinite, allanite, and thorite, and in furthering the utility of Th-Pb dating via ID-TIMS. Mike’s research in Th-Pb geochronology is supported by the Geological Society of America and the Boise State University Nuclear Materials Fellowship.