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Abstract

The Cygnet Coal Measures is a unit of carbonaceous shale,
coal and feldspathic sandstone in Tasmania of
Upper Permian age. It is overlain
gradationally or disconformably by the Springs
Sandstone, the lower member of which, Barnetts
Sandstone, is a thinly-bedded, fine-grained feldspathic
to arkosic sandstone, and the upper, the
Mountain Lodge Sandstone and a more thickly-bedded,
medium-grained protoquartzite. The upper part
of the Springs Sandstone is probably Otoceratan.
The Permo-Triassic boundary lies within these
gradational non-marine units and cannot yet be
fixed accurately. The base of the Mountain Lodge
Member is probably the most convenient boundary
to use as the Permo-Triassic boundary in local field
mapping.

Item Type:	Article
Authors/Creators:	Banks, MR and Naqvi, IH
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
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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