Miocene marine micropalaeontology and palaeoceanography of the balcombe clay, Southern Victoria, Australia

McDonald, Abbey 2019, Miocene marine micropalaeontology and palaeoceanography of the balcombe clay, Southern Victoria, Australia, B.Science (Hons) thesis, School of Life and Environmental Sciences, Deakin University.

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Title Miocene marine micropalaeontology and palaeoceanography of the balcombe clay, Southern Victoria, Australia
Author McDonald, Abbey
Institution Deakin University
School School of Life and Environmental Sciences
Faculty Faculty of Science, Engineering and Built Environment
Degree type Honours
Degree name B.Science (Hons)
Thesis advisor Warne, MarkORCID iD for Warne, Mark orcid.org/0000-0001-5456-191X
Date submitted 2019-11-08
Keyword(s) ostracoda
upwelling
palaeo-oceanography
miocene
Port Phillip Basin
Summary This study considers mid-Miocene aged fossil ostracod shells collected from an exposure of the marine Balcombe Clay occurring along the banks of Gunyong Creek, a small coastal waterway near Mount Eliza, Victoria. These fossil specimens were used to investigate an oceanic upwelling event, which occurred in Bass Strait seaway during the mid-Miocene. The fossil ostracod fauna from this site is also described in detail and the palaeoecology of each species was discussed. A total of 4590 specimens from the three soft clay layers at Gunyong Creek were collected and included 40 species from 31 genera. One new species, Miracythere neilensis sp. nov., has been described. Five deep-sea species (Legitimocythere sp., Vandiemencythere gunyoungensis, Vandiemencythere sp., Cytheropteron pherozigzag and Miracythere neilensis sp. nov.) have been identified amongst a mostly autochthonous continental shelf fossil ostracod assemblage, suggesting a small population of deep-sea ostracods migrated onto the continental shelf during a strong mid-Miocene oceanic upwelling event.
Language eng
Indigenous content off
Field of Research 0403 Geology
Description of original 52 p.
Copyright notice ©All rights reserved
Persistent URL http://hdl.handle.net/10536/DRO/DU:30133327

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