GEOCHRONOLOGY LEGACY OF JIM MATTINSON AT UC SANTA BARBARA

Professor Jim Mattinson's distinguished career in the Earth Science Department at the University of California, Santa Barbara (UCSB) had a significant impact on the field of geochronology. Renowned for his pioneering work in U-Pb zircon systematics, Professor Mattinson's research advanced our understanding of geological timescales and the processes that shape Earth's crust. His meticulous approach to analytical techniques and his numerous innovative contributions to the refinement of isotope dilution thermal ionization mass spectrometry (ID-TIMS) set new standards in precision and accuracy in geochronological studies; Jim was a generous collaborator whose transformational techniques were eagerly adopted throughout the community. In conjunction with George Tilton, Professor Mattinson played a critical role in establishing UCSB as a leading center for geochronology. His vision and dedication were foundational in the development of the current state-of-the-art facilities that continue to support cutting-edge research. The geochronology facility at UCSB, equipped with a range of instrumentation and staffed by skilled researchers, stands as a testament to his legacy. Recent advances in the UCSB geochronology laboratory reflect the enduring influence of Professor Mattinson. Innovations in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) have expanded the capabilities of the facility, enabling more precise and detailed studies of geological processes. Collaborative efforts within the Department and with other institutions have led to significant discoveries in tectonics, magmatic and metamorphic systems, crust formation processes, sedimentary basin analysis, and advances in coupled LA-ICP-MS & TIMS studies. This presentation highlights Professor Mattinson's pivotal role in shaping the geochronology program at UCSB, reviews the advancements achieved under his influence, and discusses the research that builds on his legacy. His contributions have not only advanced the field of geochronology but have also inspired a culture of excellence, innovation, and collaboration that will benefit the scientific community for years to come.