Thesiss

The tectonic history of southwestern North America since the Late Eocene involves a complex transition from a subduction-dominated to a transform-dominated margin. Through this evolution, high elevations of orogenic plateaus and corresponding thick crustal welts were dramaticall…

Metamorphic core complexes of the North American Cordillera record episodes of Mesozoic burial followed by high magnitude crustal extension. This dissertation combines field investigation and potassium feldspar 40Ar/39Ar thermal modeling at a classic cordilleran metamorphic core…