Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/110555
Type: Thesis
Title: An investigation into the sedimentary laminations at West Basin Lake, Victoria: Are they varves?
Author: Prodan, H.
Issue Date: 2014
School/Discipline: School of Physical Sciences
Abstract: West Basin Lake, in the Western Victorian Volcanic Region, has characteristics conducive to deposition of annually laminated sediments known as varves. The uppermost 50 cm of lake sediment consists of finely laminated, organic-carbonate sediments of a size and frequency that are typically associated with varved lake sediments. Varves hold tremendous potential as palaeoclimate indicators, allowing for the development of precise chronologies and annual scale climate reconstructions. Through detailed micro-facies analysis and counting of the West Basin lake sediments, the study found that the number of laminations was in good agreement with radiometric depth age modelling, suggesting annual deposition. It was concluded that although seasonal lamina were unable to be classified by the scope of this study, good agreement with radiometric depth-age modelling in conjunction with meromixis of West Basin Lake, its sheltered nature and sediment-water interface anoxia, suggest the laminations more likely represent varves than non-annual laminations and should warrant further investigation.
Dissertation Note: Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2014
Where: Volcanic Province, western Victoria
Keywords: Honours; Geology; varves; West Basin Lake; carbonates; organic rich annual laminations; meromixis; anoxia; laminated sediment
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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