Library Open Repository

Triassic sandstone petrology of Tasmania: evidence for a Tasmania-Transantarctic basin

Downloads

Downloads per month over past year

Collinson, JW and Eggert, JT and Kemp, NR (1990) Triassic sandstone petrology of Tasmania: evidence for a Tasmania-Transantarctic basin. Papers and Proceedings of the Royal Society of Tasmania, 124 (1). pp. 61-75. ISSN 0080-4703

[img]
Preview
PDF
1990-collinson-...pdf | Download (717kB)
Available under University of Tasmania Standard License.

Abstract

Similar fluvial sequences of Triassic age occur in Tasmania and the Transantarctic Mountains of Victoria Land. The
Tasmanian reference section at Poatina consists of Lower Triassic quartzose fluvial sandstones overlain by Middle and
Upper Triassic volcaniclastic fluvial sandstones and shale containing coal. Similar, but less wel1-exposed sequences, occur
in many places in Tasmania and in southern Victoria Land. The hypothetical Tasmania-Transantarctic basin was similar
in scale, configuration, and history to the Sydney foreland basin. Palaeocurrent data suggest that streams flowed along the
axis of the basin from Antarctica to Tasmania. Lower Triassic sandstones were deposited by braided streams, but Middle
and Upper Triassic stream deposits change from braided to meandering downstream towanl Tasmania. Quartzose
sandstones in the Lower Triassic were derived from northwestern Tasmania and the East Antarctic craton. The source of
volcaniclastic sandstones in the Middle and Opper Triassic was a calcalkaline volcanic arc along the palaeo-Pacific margin.

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. 61-75
ISSN: 0080-4703
Collections: Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:

Copyright Royal Society of Tasmania

Date Deposited: 23 May 2012 04:02
Last Modified: 18 Nov 2014 04:34
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page