Petrogenesis of a Phonolite-Trachyte Succession at Mount Sidley, Marie Byrd Land, Antarctica

• Published in: Journal of Petrology
• Main Authors: Panter, Kurt S., Kyle, Philip R., Smellie, John L.
• Format: Text
• Language: English
• Published: Oxford University Press 1997
• Subjects: Articles; Byrd; Marie Byrd Land; Sidley; Mount Sidley; Antarc*; Antarctica
• Online Access: http://petrology.oxfordjournals.org/cgi/content/short/38/9/1225; https://doi.org/10.1093/petroj/38.9.1225

The 1.5 Ma evolution of the Late Pliocene (5.7 to 4.2 Ma) Mt Sidley volcano, Marie Byrd Land, is examined using major and trace elements, Sr, Nd, O and Pb isotopic data. A large (5 km × 5 km) breached caldera exposes lavas and tephras, deep within Mt Sidley, and allows its magmatic evolution to be e...