Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/118029
Type: Thesis
Title: Ultrahigh temperature metamorphism: testing models for collision vs extension
Author: Greenslade, M. M.
Issue Date: 2015
School/Discipline: School of Physical Sciences
Abstract: The Warumpi Province has been interpreted to be exotic and accreted to the Northern Australian Craton (NAC) during the Liebig Orogeny at c.1640Ma. However, phase equilibria modelling of melt-deficient, Mg-Al rich granulite facies rocks at Hill 830, in the Mount Liebig area show contradictory evidence of a decompressional pressure-temperature path and a high metamorphic gradient of 90°Ckbar. This interpretation in conjunction with abundant c.1780- 1740Ma and c.1640Ma magmatism in the southern Aileron and Warumpi Provinces, indicate that the tectonic regime at c.1640Ma may instead be a south-migrating, extensional scenario, compared to the previously accepted collisonal regime; speculating that the Warumpi Province is not ‘exotic’ to the NAC.
Dissertation Note: Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2015
Where: Warumpi Province, North Australian Craton, Northern Territory
Keywords: Honours; Geology; ultrahigh temperature metamorphism; Warumpi Province; Liebig Orogeny; Grenvillian-aged reworking; phase forward equilibria modelling; pseudosection; U-Pb monazite geochronology
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: http://www.adelaide.edu.au/legals
Appears in Collections:School of Physical Sciences

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