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Potassium-Argon ages of Tertiary volcanic rocks, Tasmania
Sutherland, FL and Wellman, P (1986) Potassium-Argon ages of Tertiary volcanic rocks, Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 120. pp. 77-86. ISSN 0080-4703
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Sixteen new K-Ar dates are presented from Tasmanian and Bass Basin basalts, more than doubling the previously published number. Eight volcanic regions are described, based on boundaries established on the range of the basalt types contained in each geographic region. Volcanism occurred within the span from Eocene to Miocene (47 to 13+ Ma), but mainly within the time range Middle Eocene to Early Miocene. Alkali basalts erupted throughout this span and are interspersed with tholeiites (22-31 Ma), fractionated alkaline rocks (22-27 Ma) and rare melilite-bearing varieties (26-35 Ma).
|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. 77-86|
|Collections:||Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania|
|Additional Information:||Copyright Royal Society of Tasmania|
|Date Deposited:||24 May 2012 04:00|
|Last Modified:||18 Nov 2014 04:35|
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