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Early Miocene potassium‐argon age for the Fitzroy Lamproites of Western Australia

 

作者: P. Wellman,  

 

期刊: Journal of the Geological Society of Australia  （Taylor Available online 1973）
卷期: Volume 19, issue 4  

页码: 471-474

 

ISSN:0016-7614

 

年代: 1973

 

DOI:10.1080/00167617308728815

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Age determinations have been made on three occurrences of Fitzroy Lamproite using the potassium‐argon isotopic dating method. Within each body, well‐crystallised minerals gave consistent ages. It is inferred from these results that the three Fitzroy Lamproite bodies were emplaced 17.0 ± 0.2, 19.5 ± 0.6, and 20.8 ± 2.0 m.y. ago, in the Early Miocene.

 

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