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Note on the isostatic background of Tasmanian physiography.
Lewis, Arndell Neil (1926) Note on the isostatic background of Tasmanian physiography. Papers and Proceedings of the Royal Society of Tasmania. pp. 1-24. ISSN 0080-4703
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Tasmanian physiography is so closely connected with
the great occurrences of dolerite (diabase) that a correct
understanding of the one is essential for the deciphering of
the other. Every worker in geology in Tasmania has made
some contribution towards the elucidation of the problem,
and this paper merely carries our knowledge a little further.
The statements here contained are not proved; and await
To summarise, then, the physical outline of Tasmania is
framed on blocks of country elevated to varying altitudes
and consisting of relatively soft sediments with sills of very
hard igneous rock intruded at various horizons. Previous to this elevation a definite topography had been eroded, the
igneous rock modifying this considerably, and this topography was elevated or not according to its position. In
the course of the elevation, again, the igneous rock modified
the lines of break, and after elevation it largely controlled
the rate of erosion. Subsequent to this elevation, the agents
of-erosion, chiefly frost, snow, and ice, on the highlands have
moulded the details of the landscape, and some slight faulting
has added a few features locally.
|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|
|Page Range:||pp. 1-24|
|Collections:||Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania|
Copyright Royal Society of Tasmania
|Date Deposited:||02 May 2012 06:06|
|Last Modified:||18 Nov 2014 04:30|
|Item Statistics:||View statistics for this item|
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