Some potassium‐argon ages in New England, New South Wales
作者:
J. A. Cooper,
J. R. Richards,
A. W. Webb,
期刊:
Journal of the Geological Society of Australia
(Taylor Available online 1963)
卷期:
Volume 10,
issue 2
页码: 313-316
ISSN:0016-7614
年代: 1963
DOI:10.1080/00167616308728548
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The results of potassium‐argon measurements are reported. Three samples from the southern end of the New England bathylith confirm its Permian age (240–245 m.y.). Two samples of the “pre‐Permian” granites are not younger than Lower Permian (Hillgrove, 270 m.y.; Barrington Tops, 260 m.y.). A sample of the analcite basalt from Spring Mountain gave an Oligocene age (34 m.y.) by measurements on two separate minerals.
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