Please use this identifier to cite or link to this item:
Type: Thesis
Title: Structural interpretation in the Mount Woods Inlier
Author: Finlay, J.
Issue Date: 1993
School/Discipline: Department of Earth Sciences, Monash University
Abstract: The Mount Woods Inlier (MWI) is an Early to Mid-Proterozoic terrane represented by numerous small scattered outcrops of metasediments and granitoids, located approximately 100 km southeast of Coober Pedy, north-central South Australia. Field mapping of three outcrops reveal the following deformation history: 1. D1/M1 was a high T, low P event that produced an S1 foliation defined by sillimanite, cordierite+/-almandine garnet (Flint and Benbow, 1977). 2. D2 produced folding on scales from microscopic crenulations of S1 to macroscopic folding of metasedimentary units over tens of km. Steep fold axes and variations in fold orientations throughout the MWI appeal to fold interference (i.e. re-folding), which probably occurred during the subsequent D3 shearing event. 3. D3 was a shearing (+ folding) event that produced discreet zones (100's m long) and a large scale shear zone (>7 km) in the Spire Hills-Skylark Hills area. Kinematic indicators such as Type I S-C mylonite fabrics suggest movement was predominantly strike-slip. The discrete shear zones appear to be the result of strain caused by dextral movement on the large scale shear zone. Dating of a foliated granitoid interpreted as syn-D1/M1 at ~1700 Ma and a granite interpreted as post-D2 and pre- to early-D3 at ~1580 Ma has constrained the timing of tectonism to within these dates. This deformation is synchronous with D3 of the Kimban Orogeny, The Olarian Orogeny, the Ernabellan deformation of the Musgrave Block, D1 of the Peake-Denison Inlier and deformation and metamorphism in the Karari Fault Zone.
Dissertation Note: Thesis (B.Sc.(Hons)) -- Monash University, Department of Earth Sciences, 1993
Where: Gawler Craton, Mount Woods Inlier, northern South Australia
Keywords: Honours; Geology; deformation; metamorphism; structural analysis
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:
Appears in Collections:School of Physical Sciences

Files in This Item:
File Description SizeFormat 
01frontGeoHon.pdfTitle page, Abstract & Contents808.17 kBAdobe PDFView/Open
02wholeGeoHon.pdfWhole thesis (as available)18.68 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.