Library Open Repository

Advances in Quaternary studies in Tasmania

Downloads

Downloads per month over past year

Colhoun, EA and Kiernan, K and Barrows, T and Goede, A (2010) Advances in Quaternary studies in Tasmania. In: Australian Landscapes. Geological Society London, Bath, UK, pp. 165-183. ISBN 9781862393141

[img] PDF
Quaternary_studies.pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

The last 35 years have seen rapid advances in our knowledge of climate change during the Quaternary Period in Tasmania. Extensive mapping and new dating studies, particularly since the advent of exposure dating, have revealed that maximum ice advance occurred 1 Ma ago and later advances were less extensive. Ice advances occurred several times during the last 100 ka, not only during the Last Glacial Maximum. Deglaciation was rapid after 18 ka and complete by 14 ka. Ice strongly affected limestone and produced extensive glaciokarst with deranged surface drainage. Glacial sediment plugged conduits to underground passages partially filled with glaciofluvial gravels. Periglacial erosion, and human impact since late oxygen isotope stage (OIS) 3, enhanced sediment influxes. New pollen records, particularly from Lake Selina, provide a 125 ka vegetation and climate record representative of the Southern Hemisphere. Finally, stable isotope studies of speleothem growth have revealed wide swings in climate. The climate was warm and moist during OIS 5e and early in OIS 1. Climate was cold and dry during OIS 5d and 4, and prevented speleothem growth during OIS 3 and OIS 2.

Item Type: Book Section
Publisher: Geological Society London
Page Range: pp. 165-183
Identification Number - DOI: 10.1144/SP346.10
Additional Information: Copyright © Geological Society of London Geological Society, London, Special Publications 2010, v. 346, p. 165-183
Date Deposited: 02 Mar 2011 23:59
Last Modified: 18 Nov 2014 04:14
URI: http://eprints.utas.edu.au/id/eprint/10414
Item Statistics: View statistics for this item

Repository Staff Only (login required)

Item Control Page Item Control Page