Origin and emplacement of a middle Cretaceous gneiss dome, Fosdick Mountains, West Antarctica

Siddoway, Christine Smith; Richard, Stephen; Fanning, Christopher; Luyendyk, Bruce

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Origin and emplacement of a middle Cretaceous gneiss dome, Fosdick Mountains, West Antarctica

Date

2004

Authors

Siddoway, Christine Smith

Richard, Stephen

Fanning, Christopher

Luyendyk, Bruce

Publisher

Geological Society of America Inc

Abstract

The Fosdick Mountains, West Antarctica, form an 80 × 15 km migmatite dome comprising massive paragneisses that exhibit polyphase fabrics, nappe-scale folds that involve granodiorite to leucogranite intrusions, and diatexite. High strain zones developed o