Massive Jurassic slab break-off revealed by a multidisciplinary reappraisal of the Chon Aike silicic large igneous province

High-Precision U-Pb Geochronology of an Ignimbrite Flareup in a Silicic Large Igneous Province (Chon Aike, Patagonia)

“…During the Jurassic, the geodynamic setting of the CASP has been proposed to be plume-related (e.g., Riley et al, 2001) or subductionrelated (e.g., Bastias et al, 2021;Foley et al, 2023b;Lovecchio et al, 2020;Navarrete et al, 2019;Navarrete et al, 2024). Due to some temporal overlap and spatial association of the CASP with the Karoo and Ferrar mafic LIPs (Fig.…”

“…Overall, authors agree that the generation of CASP volcanic rocks largely occurred during crustal extension, leading to widespread crustal melting within a high heat-flux environment (Falco et al, 2022;Foley et al, 2023a;Pankhurst and Rapela, 1995;Riley et al, 2001). However, many specifics of the geodynamic setting and the duration of individual flare-ups of magmatism within the CASP remains a topic of debate (e.g., Bastias et al, 2021;Foley et al, 2023b;Kay et al, 1989;Lovecchio et al, 2020;Navarrete et al, 2019;Navarrete et al, 2024;Pankhurst et al, 1998;Pankhurst and Rapela, 1995;Riley et al, 2001).…”