Terrane accretion and upward extrusion of high-pressure granulites in the Neoproterozoic nappes of southeast Brazil: Petrologic and structural constraints

Article Abstract:

The Neoproterozoic nappes of of southeast Brazil were studied for terrane accretion and upward extrusion of high pressure granulites.

Granulite

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Accretion in the wake of terrane collision: The Neogene accretionary wedge off Kenai Peninsula, Alaska

Article Abstract:

The Alaskan convergent margin was shaped by subduction accretion and repeated terrane collision. The influence of the Yakutat Terrane subduction on the evolution of structures and development of the wedge imaged in seismic sections has been studied. The continental margin was eroded and deformed by Yakutat Terrane collision/subduction. It is speculated that a variable thickness on the Yakutat Terrane account for features such as differing backstop structure.

Geology, Stratigraphic, Stratigraphy, Neogene period

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Multistage accretion and exhumation of the continental crust

Article Abstract:

The relative roles of accretion, attenuation and magmatism in the formation and exhumation of the southern Alpine crust is examined. Tethyan rifting reduced crustal thickness, and most of the thinning in the lower crust was accommodated by granulite to retrograde greenschist facies mylonitic shearing. The composite structure may be typical of thinned, late Variscan continental crust on the passive margins of western Europe.

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