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dc.contributor.authorThompson, C.-
dc.coverage.spatialGawler Craton, Yorke Peninsula, South Australia-
dc.descriptionThis item is only available electronically.en
dc.description.abstractThe central Yorke Peninsula, South Australia, is a prospective area for iron-oxide-copper-gold mineralisation. However due to minimal exposure there is limited data on the metamorphic, deformation and cooling history on the Central Yorke Peninsula in southern Gawler Craton in southern Australia. Here we use metamorphic zircon and monazite grains from drill holes in the Equis and Ranald prospects to determine the thermal history of the area. U-Pb geochronology suggests that central Yorke Peninsula underwent metamorphism during ca 1540 – 1480 Ma. Pressure – temperature (P-T) modelling suggests that the metamorphic conditions for this thermal event were high temperature/low pressure, amphibolite-granulite facies associated with normal to elevated geothermal gradients. The tectonothermal driver for this event is not clear, it can be suggested that a combination of extension and magmatism may be have contributed to this thermal event. After the thermal event the central Yorke Peninsula underwent a period of extension and exhumation. Exhumation and extension was most likely accommodated by the Pine Point Fault during ca 1500 – 1450 Ma and was likely to be associated with reactivation of major structures, brittle faulting and regional folding in the Gawler Craton. Ca 1600 – 1570 Ma Hiltaba-age mineralisation has possibly been affected by the ca 1540 to 1480 thermal event in ways of remobilisation and concentration and following that was possibly redistributed along the Pine Point Fault during the ca 1500 – 1450 Ma extension and exhumation.en
dc.subjectHonours; Geology; tectonothermal history; Yorke Peninsula; Gawler Craton; monazite; metamorphic; Proterozoicen
dc.titleThermal and exhumation history of the central Yorke Peninsula, southern Gawler Cratonen
dc.contributor.schoolSchool of Physical Sciencesen
dc.provenanceThis 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:
dc.description.dissertationThesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2013-
Appears in Collections:School of Physical Sciences

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