40 crust-mantle evolution of the Western Superior Craton: implications for Archaean granite-greenstone petrogenesis and geodynamics

Katarina Edith Bjorkman

doi:10.4225/23/5a39c88a2f559

40 crust-mantle evolution of the Western Superior Craton: implications for Archaean granite-greenstone petrogenesis and geodynamics

Katarina Edith Bjorkman

School of Earth Sciences

Research output: Thesis › Doctoral Thesis

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Abstract

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.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Kemp, Anthony, Supervisor McCuaig, Cam, Supervisor Fiorentini, Marco, Supervisor Hollings, Peter, Supervisor, External person Lu, Yongjun, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	6 Nov 2017
DOIs	https://doi.org/10.4225/23/5a39c88a2f559
Publication status	Unpublished - 2017

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10.4225/23/5a39c88a2f559

THESIS - DOCTOR OF PHILOSOPHY - BJORKMAN Katarina Edith - 2017 - Part 1
THESIS - DOCTOR OF PHILOSOPHY - BJORKMAN Katarina Edith - 2017 - Part 2
THESIS - DOCTOR OF PHILOSOPHY - BJORKMAN Katarina Edith - 2017 - Appendices
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title = "40 crust-mantle evolution of the Western Superior Craton: implications for Archaean granite-greenstone petrogenesis and geodynamics",

abstract = "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.",

keywords = "Archaean geodynamics, zircon, crustal evolution, Superior Province, hafnium isotopes, SHRIMP, Oxygen isotopes, mantle evolution",

author = "Bjorkman, {Katarina Edith}",

year = "2017",

doi = "10.4225/23/5a39c88a2f559",

language = "English",

school = "The University of Western Australia",

}

TY - THES

T1 - 40 crust-mantle evolution of the Western Superior Craton: implications for Archaean granite-greenstone petrogenesis and geodynamics

AU - Bjorkman, Katarina Edith

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

KW - Archaean geodynamics

KW - zircon

KW - crustal evolution

KW - Superior Province

KW - hafnium isotopes

KW - SHRIMP

KW - Oxygen isotopes

KW - mantle evolution

U2 - 10.4225/23/5a39c88a2f559

DO - 10.4225/23/5a39c88a2f559

M3 - Doctoral Thesis

ER -

40 crust-mantle evolution of the Western Superior Craton: implications for Archaean granite-greenstone petrogenesis and geodynamics

Abstract

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