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Abstract

A conformable succession in Palaeozoic rocks occurs at the Davey River at the southern end of the Olga-Hardwood syncline in S.W. Tasmania, and consists of the following formations (with approximate thicknesses):
(top) Unit 6 Sandstone 10 metres
Unit 5 Shale 15 metres
Unit 4 Sandstone, minor shale, conglomerate 75 metres
Unit 3 Shale-sandstone alternation 0-500 metres
Unit 2 Pebbly sandstone 0-500 metres
(bottom)
Unit 1 Quartzite conglomerate 0-800 metres
Formations 1, 2 and 3 are equivalent, on lithological
and structural grounds, to the Bathurst
Harbour Sequence of Jennings (1961). Unit 4 has lithological
and faunal similarities with the Caroline
Creek Sandstone of the West Coast Ordovician
succession (Banks 1962b). Equivalents of the Florentine
Valley Mudstone and Gordon Limestone are probably
also present in the centre of the syncline,
If these correlations arc correct the Davey River
succession provides a link between the Bathurst Harbour
and West Coast successions, with the Long Bay Shale
representing a marine formation which is present in the
South-west but apparently absent on the West Coast.

Item Type:	Article
Authors/Creators:	Bowen, EA and Maclean, CJ
Keywords:	Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library
Journal or Publication Title:	Papers and Proceedings of the Royal Society of Tasmania
ISSN:	0080-4703
DOI / ID Number:	https://doi.org/10.26749/rstpp.105.21
Collections:	Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:	Copyright Royal Society of Tasmania
Item Statistics:	View statistics for this item

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