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Potassium-Argon ages of Tertiary volcanic rocks, Tasmania


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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).

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. 77-86
ISSN: 0080-4703
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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