1-1-1-1-1-1-1-1-1-1-1-1-1-1 ***REPOSTED DUE TO SYSTEM ERROR*** From: "Michelfelder, Gary" <GaryMichelfelder@xxxxxxxxxxxxxxxxx> Dear Colleagues- If you are working in igneous or metamorphic rocks and are in the Midcontinent region of the United States, we would like to draw your attention to and invite you to submit an abstract to a session at the GSA North Central-South Central Joint Section Meeting in Springfield, Missouri in April. The abstract deadline is approaching quickly and is January 16th, 2024. *T7. Ultramafic and Mafic Magmatism* Alison H. Graettinger, and Matthew Brueseke. *Description:* Ultramafic and mafic magmas enable the study of large-scale tectonic processes or magma production down to local structures, event chronologies, and hazards. This session welcomes petrologic, geochemical, and structural studies that utilize ultramafic/mafic rocks to study the formation, transport and eruption of magmas and related geologic histories. *T9. Topics in Volcanology, Geochemistry, and Igneous/Metamorphic Petrology* Gary Michelfelder, and Ethan Wagner. *Description: *This session is designed to host volcanology, petrology, and geochemistry related contributions that do not easily fit into other sessions at the 2024 GSA Joint North Central & South Central Section meeting. *T10. Orogens and Aulacogens: Advances in the Study of Magmatism, Metamorphism, and Deformation* Liane Stevens, Jonathan Price, and Michael DeAngelis. *Description: *From the Canadian Shield to the Sierra Madre Oriental, GSAâ??s South-Central and North-Central sections are home to orogens and aulacogens that shaped Laurentia, with rocks that record over two billion years of magmatism, metamorphism, and deformation. This session welcomes all contributions aimed at improving understanding of these events and processes. I will also be leading a Pre-Conference field trip to look in part at some of the Mesoproterozoic igneous rocks of the St Francois Mountains *Petrology and Structure of the Mesoproterozoic Igneous Rocks of the St. Francois Mountains, Southeast Missouri.* Gary Michelfelder; Hanlin Zhang; and Ken Brown *Description:* This two-day field trip will explore the Mid-Continent granites and rhyolites of the St. Francois Mountains. Field stops will visit classic locations on the volcanic stratigraphy of rhyolites and associated ring granitoid plutons of the Mesoproterozoic calderas. We will also visit lesser-known locations related to younger plutons. We hope to see you in Springfield! 1-1-1-1-1-1-1-1-1-1-1-1-1-1 ------------------------------
