Thesiss

Slow spreading mid-ocean ridges are a ubiquitous part of the global ridge system, yet remain poorly understood. The crust produced at these ridges is fundamentally different than that produced at fast spreading ridges where the crustal architecture largely conforms to the standa…

The focused emplacement of magmas at spreading ridges represents the primary means by which more than two-thirds of the earth's crust is generated. Yet the mechanisms by which the partially molten lower crust is accreted and deformed are poorly understood. This dissertation pres…

Rocks exposed in Fiordland, New Zealand provide a record of magmatic and tectonic processes that were active in the middle to lower crust of a magmatic arc during the Early Cretaceous. The George Sound shear zone (GSSZ) is one expression of those processes, and is a steep, lower…