Dear Colleagues, We would like to invite you to submit an abstract to the session "*Mesozoic Magmatism, Postrift Tectonics, and Passive Margin Development of Northeastern North America*" at the upcoming Northeastern GSA section meeting in Hartford, CT (March 21-24) . *The abstract deadline is 11:50 PM PST on January 13th, 2026*. *Session Description: *The northeastern region experienced protracted Mesozoic (Triassic-Cretaceous) magmatism associated with continental rifting and subsequent passive margin development. We welcome contributions related to the occurrence, tectonics, or driving mechanisms of these syn- and postrift events. We hope to see you in Hartford. Cheers, Sarah Mazza, Jennifer Cooper Boemmels, MaryAnn Malinconico -- Sarah E. Mazza Assistant Professor Department of Geosciences Smith College Northampton, MA 01063 smazza@smith.edu pronouns: she/her/hers