U-Pb evidence of ~1.7 Ga crustal tectonism during the Nimrod Orogeny in the Transantarctic Mountains, Antarctica: implications for Proterozoic plate reconstructions

• Main Authors: Goodge, John W, Fanning, Christopher, Bennett, Victoria
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Elsevier 2015
• Subjects: Keywords: lead; uranium; zirconium; crustal evolution; orogeny; Proterozoic; SHRIMP dating; tectonic evolution; tectonic reconstruction; age determination; Antarctica; archaean; article; crystallization; geological era; geology; geomorphology; granite; growth; micr Antarctica; Geochronology; Paleoproterozoic; Antarctic; East Antarctica; Transantarctic Mountains; Pacific; Beardmore; Nimrod; Antarc*
• Online Access: http://hdl.handle.net/1885/90792

The Pacific margin of East Antarctica records a long tectonic history of crustal growth and breakup, culminating in the early Paleozoic Ross Orogeny associated with Gondwanaland amalgamation. Periods of older tectonism have been proposed (e.g. Precambrian Nimrod and Beardmore Orogenies), but the ver...