A revised interpretation of the chon aike magmatic province: active margin origin and implications for the opening of the weddell sea

• Published in: Lithos
• Main Authors: Bastias, Joaquín, Spikings, Richard, Riley, Teal, Ulianov, Alexey, Grunow, Anne, Chiaradia, Massimo, Hervé Allamand, Francisco Enrique Isidoro
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2021
• Subjects: Large igneous province; Zircon U-PB; Gondwana break-up; Antarctic penisnsula; Flood basalts; Mantle-plume; Graham land; Jurassic rhyolite; South America; Rift system; Antarctic; Antarctic Peninsula; Graham Land; Patagonia; Rocas; The Antarctic; Weddell; Weddell Sea; Antarc*
• Online Access: https://doi.org/10.1016/j.lithos.2021.106013; https://repositorio.uchile.cl/handle/2250/183475

Late Triassic - Jurassic igneous rocks of the Antarctic Peninsula and Patagonia provide evidence for the evolution of the margin of southwestern Gondwana. We present new geochronological (LA-ICP-MS zircon U-Pb dates) analyses of 12 intrusive and volcanic rocks, which are complemented by geochemical...