Alkaline magmatism as a probe into the lithospheric mantle in the Yilgarn Craton, Western Australia

Eunjoo Choi

doi:10.26182/5f48a3e44dffa

Alkaline magmatism as a probe into the lithospheric mantle in the Yilgarn Craton, Western Australia

Eunjoo Choi

School of Earth Sciences

Research output: Thesis › Doctoral Thesis

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Abstract

The Yilgarn Craton of Western Australia is one of the most metal-endowed geological regions in the world. In order to establish its metallogenic fertility and the nature of the upper mantle beneath the craton, this thesis provides the origin of calc-alkaline and alkaline ultramafic rocks in the Yilgarn Craton through petrography, in-situ and bulk-rock geochemistry and radiogenic isotopes. The results highlight the geodynamic and compositional evolution of the lithospheric mantle from the Late Archean to Neoproterozoic. Finally, this thesis proposes that the Late Archean subduction-related metasomatism may have provided a first-order control on the gold endowment of the Yilgarn Craton.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Fiorentini, Marco, Supervisor Giuliani, Andrea, Supervisor, External person Foley, Stephen F., Supervisor, External person Kemp, Tony, Supervisor Pirajno, Franco, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	22 Jul 2020
DOIs	https://doi.org/10.26182/5f48a3e44dffa
Publication status	Unpublished - 2020

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THESIS - DOCTOR OF PHILOSOPHY - CHOI, Eunjoo - 2020
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title = "Alkaline magmatism as a probe into the lithospheric mantle in the Yilgarn Craton, Western Australia",

abstract = "The Yilgarn Craton of Western Australia is one of the most metal-endowed geological regions in the world. In order to establish its metallogenic fertility and the nature of the upper mantle beneath the craton, this thesis provides the origin of calc-alkaline and alkaline ultramafic rocks in the Yilgarn Craton through petrography, in-situ and bulk-rock geochemistry and radiogenic isotopes. The results highlight the geodynamic and compositional evolution of the lithospheric mantle from the Late Archean to Neoproterozoic. Finally, this thesis proposes that the Late Archean subduction-related metasomatism may have provided a first-order control on the gold endowment of the Yilgarn Craton. ",

keywords = "Yilgarn Craton, Alkaline ultramafic rocks, Late Archean, Lithospheric mantle, Proterozoic, Gold, Calc-alkaline lamprophyre, Geodynamic evolution",

author = "Eunjoo Choi",

year = "2020",

doi = "10.26182/5f48a3e44dffa",

language = "English",

school = "The University of Western Australia",

}

TY - BOOK

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AU - Choi, Eunjoo

PY - 2020

Y1 - 2020

N2 - The Yilgarn Craton of Western Australia is one of the most metal-endowed geological regions in the world. In order to establish its metallogenic fertility and the nature of the upper mantle beneath the craton, this thesis provides the origin of calc-alkaline and alkaline ultramafic rocks in the Yilgarn Craton through petrography, in-situ and bulk-rock geochemistry and radiogenic isotopes. The results highlight the geodynamic and compositional evolution of the lithospheric mantle from the Late Archean to Neoproterozoic. Finally, this thesis proposes that the Late Archean subduction-related metasomatism may have provided a first-order control on the gold endowment of the Yilgarn Craton.

AB - The Yilgarn Craton of Western Australia is one of the most metal-endowed geological regions in the world. In order to establish its metallogenic fertility and the nature of the upper mantle beneath the craton, this thesis provides the origin of calc-alkaline and alkaline ultramafic rocks in the Yilgarn Craton through petrography, in-situ and bulk-rock geochemistry and radiogenic isotopes. The results highlight the geodynamic and compositional evolution of the lithospheric mantle from the Late Archean to Neoproterozoic. Finally, this thesis proposes that the Late Archean subduction-related metasomatism may have provided a first-order control on the gold endowment of the Yilgarn Craton.

KW - Yilgarn Craton

KW - Alkaline ultramafic rocks

KW - Late Archean

KW - Lithospheric mantle

KW - Proterozoic

KW - Gold

KW - Calc-alkaline lamprophyre

KW - Geodynamic evolution

U2 - 10.26182/5f48a3e44dffa

DO - 10.26182/5f48a3e44dffa

M3 - Doctoral Thesis

ER -

Alkaline magmatism as a probe into the lithospheric mantle in the Yilgarn Craton, Western Australia

Abstract

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