Library Open Repository

Note on the isostatic background of Tasmanian physiography.

Downloads

Downloads per month over past year

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

[img]
Preview
PDF
1926_isostatic_background_of_Tasmanian_physiography.pdf | Download (536kB)
Available under University of Tasmania Standard License.

Abstract

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 further confirmation. 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.

Item Type: Article
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
ISSN: 0080-4703
Additional Information: Copyright Royal Society of Tasmania
Date Deposited: 02 May 2012 06:06
Last Modified: 18 Nov 2014 04:30
URI: http://eprints.utas.edu.au/id/eprint/13047
Item Statistics: View statistics for this item

Repository Staff Only (login required)

Item Control Page Item Control Page