Feedbacks between high pressure metasomatism and structures in subduction channels

Feedbacks between high pressure metasomatism and structures in subduction channels

Advisor/s

Dr Melanie Finch

College or Research Centre

College of Science & Engineering

Summary of Project

Subduction channels are ductile shear zones at the interface between the downgoing and overriding plate. These zones experience high fluid fluxes and cycle between ductile and brittle modes of deformation. Rock packages are often layered, with rocks from different P/T conditions juxtaposed, perhaps as a result of metasomatism. Detailed work is required to understand how the different rock types formed, and how metasomatism modifies the way rocks deform in these channels. This project will examine subduction channel rocks from Port Macquarie, NSW and New Caledonia to understand metasomatism and deformation at high pressure (blueschist and eclogite facies) using a combination of field work, structural geology, microstructures, petrology, and geochemical techniques.

Key Words

Subduction; metasomatism; structural geology

Would suit an applicant who

Updated: 22 Mar 2022