Imaging ancient LIP architecture with combined gravity and seismic methods: application to the Warakurna Large Igneous Province

Abdulrhman Al Ghamdi

Imaging ancient LIP architecture with combined gravity and seismic methods: application to the Warakurna Large Igneous Province

Abdulrhman Al Ghamdi

Research output: Thesis › Doctoral Thesis

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Abstract

The deep crustal structures of Warakuma LIP have been imaged using combined-gravity-seismic methods even with absence of the thermal system with younger LIPs. Hence, this work adds to the body of knowledge regarding geophysical imaging of the lower-crustal signature of the magmatic processes in ancient LIPs. Modelling results indicate an extensive area with very thick crust (> 45) and high-density materials (> 2.85 g/cm³) at the base of the crust, interpreted as a magmatic underplate. This area occurs beneath the western Musgrave Province and extends to the north-west and north-east, consistent with being part of the Warakuma LIP.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Aitken, Alan, Supervisor Dentith, Mike, Supervisor
Award date	20 Feb 2017
Publication status	Unpublished - 2017

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THESIS - DOCTOR OF PHILOSOPHY - AL GHAMDI Abdulrhman - 2017
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title = "Imaging ancient LIP architecture with combined gravity and seismic methods: application to the Warakurna Large Igneous Province",

abstract = "The deep crustal structures of Warakuma LIP have been imaged using combined-gravity-seismic methods even with absence of the thermal system with younger LIPs. Hence, this work adds to the body of knowledge regarding geophysical imaging of the lower-crustal signature of the magmatic processes in ancient LIPs. Modelling results indicate an extensive area with very thick crust (> 45) and high-density materials (> 2.85 g/cm3) at the base of the crust, interpreted as a magmatic underplate. This area occurs beneath the western Musgrave Province and extends to the north-west and north-east, consistent with being part of the Warakuma LIP.",

keywords = "Warakuma, Gravity modeling, Receiver function, Capricorn Orogen, Composition model, 3D gravity inversion, Underplating, Musgrave Province",

author = "{Al Ghamdi}, Abdulrhman",

year = "2017",

language = "English",

school = "The University of Western Australia",

}

TY - THES

T1 - Imaging ancient LIP architecture with combined gravity and seismic methods: application to the Warakurna Large Igneous Province

AU - Al Ghamdi, Abdulrhman

PY - 2017

Y1 - 2017

N2 - The deep crustal structures of Warakuma LIP have been imaged using combined-gravity-seismic methods even with absence of the thermal system with younger LIPs. Hence, this work adds to the body of knowledge regarding geophysical imaging of the lower-crustal signature of the magmatic processes in ancient LIPs. Modelling results indicate an extensive area with very thick crust (> 45) and high-density materials (> 2.85 g/cm3) at the base of the crust, interpreted as a magmatic underplate. This area occurs beneath the western Musgrave Province and extends to the north-west and north-east, consistent with being part of the Warakuma LIP.

AB - The deep crustal structures of Warakuma LIP have been imaged using combined-gravity-seismic methods even with absence of the thermal system with younger LIPs. Hence, this work adds to the body of knowledge regarding geophysical imaging of the lower-crustal signature of the magmatic processes in ancient LIPs. Modelling results indicate an extensive area with very thick crust (> 45) and high-density materials (> 2.85 g/cm3) at the base of the crust, interpreted as a magmatic underplate. This area occurs beneath the western Musgrave Province and extends to the north-west and north-east, consistent with being part of the Warakuma LIP.

KW - Warakuma

KW - Gravity modeling

KW - Receiver function

KW - Capricorn Orogen

KW - Composition model

KW - 3D gravity inversion

KW - Underplating

KW - Musgrave Province

M3 - Doctoral Thesis

ER -

Imaging ancient LIP architecture with combined gravity and seismic methods: application to the Warakurna Large Igneous Province

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