Dear colleagues, We invite you to submit an abstract to the GSA Cordilleran 2023 meeting in Reno, NV, May 17-19. Our session, T1. Evolution of Transcrustal Cordilleran Arc Systems, encourages submissions from a broad range of Geoscience fields that investigate subduction, magma genesis, emplacement, eruption, and host-rock deformation across arc sections. The abstract deadline is February 14, 11.59 PST. Abstracts may be submitted at the following link: https://www.geosociety.org/GSA/Events/Section_Meetings/GSA/Sections/cd/2023mtg/techprog.aspx Katie Ardill (TTU), Wenrong Cao (UNR), Babsi Ratschbacher (UC Davis)