Stratno | Stratigraphic Name | Category | Contents | Last update 
14065|New River Beds|Name source|From New River on Huon 1:100 000 Sheet area, South West Tasmania.|16-MAY-23
14065|New River Beds|Unit history|Hughes (1957) referred to these beds as the Gordon Limestone.|16-MAY-23
14065|New River Beds|Type section locality|From grid ref. Huon DM661852 along ridge track to DM 665854.|16-MAY-23
14065|New River Beds|Extent|On the lower western flanks of Precipitous Bluff, S.W. Tasmania. Lateral extent unknown due to thick bush. Forms cliff near Damper Cave and probably forms cliff further 2 km south along Damper Creek.|16-MAY-23
14065|New River Beds|Thickness range|>130 metres|16-MAY-23
14065|New River Beds|Lithology|Limestone, white to grey, coarse grained, massive-thick bedded, rare cross bedding, minor interbeds of micrites, biomicrites and dolomicrites. Mainly biospararenites, intraspararenites, biointraspararenites and biomicrites. Beds composed mainly of Calathium are common as are corals.|16-MAY-23
14065|New River Beds|Relationships and boundaries|Overlies unknown strata. Conformably overlain by Precipitous Bluff Beds.|16-MAY-23
14065|New River Beds|Age reasons|Tetradium suggests an Ordovician age. The basal 90 m of the New River Beds contain Phragmodus flexuosus Moskalenko which suggests a Chazyan age and higher beds contain Tasmanognathus careyi Burrett which suggests a Blackriveran age (see Burrett 1979, Banks & Burrett 1980).|16-MAY-23
14065|New River Beds|Proposed publication|Burrett et al. 1981. Gordon Subgroup Carbonates at Precipitous Bluff and Point Cecil, South West Tasmania, Australia. Pap. Proc. Roy. Soc. Tasm., 115 (in press).|16-MAY-23
14065|New River Beds|Comments|Published 81/22201|16-MAY-23
14065|New River Beds|References|80/20776|16-MAY-23
15545|Precipitous Bluff Beds|Name source|From Precipitous Bluff in South West Tasmania.|16-MAY-23
15545|Precipitous Bluff Beds|Unit history|Mentioned in Hughes (1957) as Gordon Limestone.|16-MAY-23
15545|Precipitous Bluff Beds|Type section locality|Outcrops along ridge from Huon DM 665854 - DM 673859.|16-MAY-23
15545|Precipitous Bluff Beds|Extent|On higher western flanks of Precipitous Bluff (Huon 1:100 000 sheet). Extent beyond type section unknown because of thick bush.|16-MAY-23
15545|Precipitous Bluff Beds|Thickness range|>230 metres.|16-MAY-23
15545|Precipitous Bluff Beds|Lithology|Thinly bedded siliceous siltstones, calcareous shales, biomicrites and biosparenites. It is a correlate of the Gordon Subgroup.|16-MAY-23
15545|Precipitous Bluff Beds|Relationships and boundaries|The Precipitous Bluff Beds conformably overlie the New River Beds. The base of the Precipitous Bluff Beds is marked by a very fossiliferous decalcified siltstone. The Precipitous Bluff Beds are overlain unconformably by fossiliferous pebbly siliciclastics of the Lower Parmeener Supergroup.|16-MAY-23
15545|Precipitous Bluff Beds|Age reasons|The basal siltstone contains an abundant brachiopod fauna including Sowerbyites vesciseptus Percival and Sowerbyella cf. Anticipata Percival and suggest an Eastonian age. Conodonts from just below this siltstone yield Phragmodus undatus Branson and Mehl and sugagest an Early Trentonian age whilst conodonts higher in the section suggest a Cincinnatian (Late Ordovician) age for the highest strata.|16-MAY-23
15545|Precipitous Bluff Beds|Proposed publication|Burrett et al. 1981. Gordon Subgroup Carbonates at Precipitous Bluff and Point Cecil, South West Tasmania, Australia. Pap. Proc. Roy. Soc. Tasm., 115 (in press).|16-MAY-23
15545|Precipitous Bluff Beds|Comments|Published 81/22201|16-MAY-23
24463|Prion Beach Beds|Name source|From Prion Beach on South East Cape, 1:100 000 Sheet No. 8210.|16-MAY-23
24463|Prion Beach Beds|Unit history|Referred to by Twelvetrees (1915), Blake (in Hughes 1957) and Banks (1962, p.170) as Gordon Limestone.|16-MAY-23
24463|Prion Beach Beds|Type section locality|Along the western side of Point Cecil from Grid Ref. DM 678775 - DM 681782.|16-MAY-23
24463|Prion Beach Beds|Extent|This unit outcrops along the western side of Point Cecil, along the north of New River Lagoon and along the eastern shore of New River Lagoon.|16-MAY-23
24463|Prion Beach Beds|Thickness range|Probably not more than 200 metres. However, beds are strongly sheared and thickness is difficult to estimate. |16-MAY-23
24463|Prion Beach Beds|Lithology|Thinly bedded argillaceous limestones with minor calcarenites and interbedded shales.|16-MAY-23
24463|Prion Beach Beds|Relationships and boundaries|This unit is faulted against but probably overlies Denison Subgroup correlate quartz arenites. Unconformably overlain by Quaternary sand dune deposits.|16-MAY-23
24463|Prion Beach Beds|Age reasons|Ranges in age from Blackriveran-Trentonian on the basis of the conodonts Phragmodus inflexus Stauffer and Phragmodus undatus Branson & Mehl.|16-MAY-23
24463|Prion Beach Beds|Proposed publication|Burrett et al. 1981. Gordon Subgroup Carbonates at Precipitous Bluff and Point Cecil, South West Tasmania, Australia. Pap. Proc. Roy. Soc. Tasm. V.115 (in press).|16-MAY-23
24463|Prion Beach Beds|Comments|Published 81/22201|16-MAY-23
24463|Prion Beach Beds|References|Twelvetrees, W.H., 1915. Reconnaissance of country between Recherche Bay and New River, Southern Tasmania. Bull. Geol. Survey Tasmania, 24, p1-38 (01/31640);  Banks, M.R., 1962. The Ordovician System. In Spry, A. and Banks, M.R. (Eds.) The Geology of Tasmania. Geol. Soc. Australia Jour., 9(2), 147-176 (01/31641).|16-MAY-23
