Isotopic ages and palaeomagnetism of selected magmatic rocks from King George Island (Antarctic Peninsula)

• Published in: Journal of the Geological Society
• Main Authors: Nawrocki, Jerzy, Panczyk, Magdelena, Williams, Ian
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Geological Society of London
• Subjects: Keywords: Antarctic Peninsula; Basaltic lava flow; Crystal morphologies; Drake passage; Isotopic age; Late cretaceous; Magmatic rock; Mean ages; New age; Palaeomagnetism; U-Pb dating; Basalt; Geochronology; Geomagnetism; Igneous rocks; Isotopes; Lead; Rocks; Strati; Antarctic; Antarctic Peninsula; King George Island; Drake Passage; Hervé Cove; Uchatka Point; Antarc*
• Online Access: http://hdl.handle.net/1885/18415; https://doi.org/10.1144/0016-76492009-177; https://openresearch-repository.anu.edu.au/bitstream/1885/18415/5/Nawrocki_etal_%252710.pdf.jpg; https://openresearch-repository.anu.edu.au/bitstream/1885/18415/7/01_Nawrocki_Isotopic_ages_and_2010.pdf.jpg

A range of mafic to intermediate extrusive and intrusive igneous rocks from the central part of King George Island were sampled for isotopic and palaeomagnetic studies. Single-grain U-Pb dating of zircon from basalts to trachytes from the upper part of the section gave Eocene ages (53.0 ± 0.7 to 47....