Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/98316
Type: Thesis
Title: Geochemical and isotopic investigation into the tectonic setting of Mesoarchean and Paleoproterozoic granitoid suites within the eastern Gawler Craton, South Australia
Author: Goodwin, S.
Issue Date: 2010
School/Discipline: School of Physical Sciences
Abstract: A geochemical study into a recently identified Mesoarchean Archean granitoid suite in the Eastern Gawler Craton, South Australia, has found that over a larger area the geochemistry and isotopes are variable. Granitoids of ~3240Ma have been dated using the SHRIMP, which look identical to the cooyerdoo but have trondhjemitic REE patterns. This study has used geochemical and Nd-Sm isotopic data to identify the tectonic setting and source region of Mesoarchean (~3150Ma) granitoids and amphibolites and Paleoproterozoic (~1730Ma) granitoids and amphibolites. The old and young granites are high K, Calc-alkaline, I type granites and are interpreted to have formed in a continental arc setting. There are a few enriched younger and older enriched mafics formed by metasomatism of the mantle. The ~3240Ma and ~3150Ma are interpreted to have been formed by the same tectonic event. This study has shown the eastern Gawler Craton to be even more complex than was thought from the Fraser et al. 2010 study.
Dissertation Note: Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2010
Where: Eastern Gawler Craton, Eyre Peninsula, South Australia
Keywords: Honours; Geology
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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