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Age and palaeoenvironment of pliocene sediments, Cameron Inlet Formation, Eastern Flinders Island, Tasmania: implications for southeastern Australian biostratigraphy

Citation

Quilty, PG and Whitehead, JM and Lewis, D, Age and palaeoenvironment of pliocene sediments, Cameron Inlet Formation, Eastern Flinders Island, Tasmania: implications for southeastern Australian biostratigraphy, Papers and Proceedings of the Royal Society of Tasmania, 147 pp. 51-84. ISSN 0080-4703 (2013) [Refereed Article]


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Copyright Statement

Copyright 2013 The Royal Society of Tasmania

Official URL: http://rst.org.au/publications/

Abstract

A previously unrecorded thin unit of very Early Pliocene calcareous sediments of the Cameron Inlet Formation from two auger holes in central Flinders Island, Tasmania, has yielded a very diverse fauna of benthic Foraminifera and enough planktonic forms to allow fine correlation with international biostratigraphic standards (N19, approximately 5.34.4 Ma, or Lower Opoitian in New Zealand terminology). Ostracods are also recorded. It is older than an earlier recorded sample from North Patriarch Drain a few kilometres away. It lies within the Kalimnan of southeastern Australian stage nomenclature and probably equivalent to 1985 Molluscan Assemblage XVI. The sediments and faunas accumulated in very shallow, fully marine conditions, initially with some possible estuarine aspect that faded with time. The fauna is of well-known species, dominated by Parredicta kalimnensis (Parr, 1939). Other abundant and diverse forms are elphidiids and cibicidids. Agglutinated forms are almost absent and miliolids are diverse but minor components. The fauna includes a new polymorphinid genus and species that will be described elsewhere. The samples contain a bewildering array of unilocular forms. Water temperature appears to have been about 12C. The Kalimnan Stage may encompass the entire Pliocene and two substages may be identifiable.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Geology
Research Field:Palaeontology (incl. Palynology)
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Quilty, PG (Dr Pat Quilty)
Author:Whitehead, JM (Dr Jason Whitehead)
Author:Lewis, D (Mr Dale Lewis)
ID Code:94854
Year Published:2013
Deposited By:Earth Sciences
Deposited On:2014-09-18
Last Modified:2014-10-16
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