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Type: Thesis
Title: Petrogenesis and magma chamber evolution of the Gawler Range Volcanics
Author: Tregeagle, J-S
Issue Date: 2014
School/Discipline: School of Physical Sciences
Abstract: The Gawler Range Volcanics (GRV) have been extensively studied previously, but a source and emplacement mechanism has yet to be agreed upon. This study aims to constrain the source region of the GRV and to make deductions about how the GRV evolved. This has been done through a number of modelling techniques, including AFC modelling and use of the Rhyolite-MELTs program. The εNd values vary widely across the GRV, and these have been used in conjunction with trace element geochemistry to constrain the source region. It is deduced that the most primitive GRV basalts were the result of limited fractionation of a re-enriched refractory harzburgite source in the sub-continental lithospheric mantle. It is then shown that the entire GRV suite can be derived from one fractionation trend, however some assimilation is required.
Dissertation Note: Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2014
Where: Gawler Craton, DSouth Australia
Keywords: Honours; Geology; petrogenesis; magma; evolution; Gawler Range Volcanics; Rhyolite-MELTs; AFC; modelling; geochemistry
Description: This item is only available electronically.
Provenance: This electronic version is made publicly available by the University of Adelaide in accordance with its open access policy for student theses. Copyright in this thesis remains with the author. This thesis may incorporate third party material which has been used by the author pursuant to Fair Dealing exceptions. If you are the author of this thesis and do not wish it to be made publicly available, or you are the owner of any included third party copyright material you wish to be removed from this electronic version, please complete the take down form located at:
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