Goodge, John W; Fanning, Christopher; Norman, Marc; Bennett, Victoria
The Cambrian-Ordovician Ross Orogeny in Antarctica produced a voluminous magmatic belt composed mainly of post-orogenic granitoids. This magmatic belt has strong calc-alkaline characteristics reflecting a convergent-margin origin associated with subduction of paleo-Pacific oceanic lithosphere beneath cratonic East Antarctica. However, it is unclear how and when magmatism began, and to what degree magmatism was associated with syn-orogenic deformation and intra-arc extension. New U-Pb zircon...[Show more]
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