Adelaide Research & Scholarship
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https://hdl.handle.net/2440/92908
| Type: | Thesis |
| Title: | Regional Inkamulla-aged (ca. 1740–1755 Ma) tectonism along strike of the Mt Hay-Redbank Hill region, southern Aileron Province, central Australia |
| Author: | Lawson-Wyatt, M. A. |
| Issue Date: | 2012 |
| School/Discipline: | School of Earth and Environmental Sciences |
| Abstract: | LA-ICP-MS U-Pb monazite and zircon geochronology from granulite facies metapelites and granites indicate Inkamulla-aged metamorphism has occurred in the southern Aileron province, immediately east of the Mt Hay and Mt Chapple massifs. Gneissic metasediments and a granitic gneiss from an EW-striking structural belt in the southern Aileron Province yield ages reflective of the Inkamulla Igneous Event (1754-1741 Ma) and the Chewings Event (1593-1545 Ma), along with magmatic ages of 1627 and 1641 Ma. The Chewings age is interpreted to represent structural reworking associated with discrete shear zones along the northern margin of the EW belt. Magmatic ages of ca. 1640 Ma typically associated with Warumpi Province magmatism and deformation are found within the study area, which weakens the argument that the Warumpi terrane is exotic from the Aileron Province. The metamorphic conditions of 780-920°C and 5-10 kbars indicate an elevated geothermal gradient. |
| Dissertation Note: | Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2012 |
| Where: | Arunta Block, Central Australia |
| Keywords: | Honours; Geology; Arunta; Aileron Province; U-Pb geochronology; monazite; reworking; migmatite; Proterozoic Australia; Inkamulla; Chewings |
| 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 |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 01frontGeoHon.pdf | Title page, abstract & contents | 156.53 kB | Adobe PDF | View/Open |
| 02wholeGeoHon.pdf | Whole thesis (as available) | 8.05 MB | Adobe PDF | View/Open |
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