New U-Pb, Lu-Hf and O isotopic measurements on Igneous-hosted zircons help unravel the crust-mantle evolution of the Superior Craton, Canada. Uniform isotope time arrays spaning 600 m.y., together with the physiochemical rock record, are reconciled by in-situ Paleoarchaean rifting, Neoarchaean basin closure by subduction and structural repetition during late transpression. The appearance of the sanukitoid suite during transpression reflects the confluence of stiff, thick lithosphere, compression, widespread sedimentation, transport of sedimentary materials to mantle depth and extensive differentiation of derived melts. Therefore, the global late Archaean tonalite-trondjemite-granodiorite to sanukitoid transition marks the establishment of uniformitarian crust formation processes on Earth.
|Qualification||Doctor of Philosophy|
|Award date||6 Nov 2017|
|Publication status||Unpublished - 2017|